Dmitriy Uznadze – 1886 1950

Biography

The history of twentieth-century psychological thought is frequently written as an enduring dialectic between two reductionist poles: the introspective atomism of early structuralism and the mechanistic determinism of classical behaviorism, punctuated by the hermeneutic speculations of psychoanalysis. Yet, far from the well-trodden intellectual corridors of Vienna, Leipzig, Paris, and Cambridge, Massachusetts, an ambitious and structurally revolutionary paradigm was forged in the South Caucasus. Dmitriy Nikolaevich Uznadze (1886–1950), a Georgian philosopher, psychologist, and pedagogue, constructed a comprehensive scientific framework designed to bridge the chasm between somatic physiology and subjective consciousness. At the epicenter of his intellectual edifice stands the Theory of Set (known in Russian as Ustanovka and in Georgian as ganwyoba), an ontological and empirical model that identified the foundational, pre-reflective orientation of the living subject as the primary governing mechanism of all cognitive, behavioral, and perceptual phenomena.

Trained under the founding fathers of experimental psychophysics in Germany and Swiss functionalists in Geneva, yet thoroughly grounded in the epistemological debates of Neo-Kantianism and Eastern European personalism, Uznadze developed a psychological system that anticipated contemporary developments in embodied cognition, predictive processing, and unconscious cognitive priming by more than half a century. While the Western psychological canon canonized figures such as John B. Watson, Sigmund Freud, and later Jean Piaget, Uznadze established a globally singular psychological laboratory and school of thought in Tbilisi. His work systematically dismantled what he identified as the fatal flaw of modern psychology: the “postulate of immediacy,” which naively presumed that an external stimulus acts directly upon conscious awareness without the mediation of an integrated internal state.

This treatise offers a rigorous, exhaustive exploration of Dmitriy Uznadze’s life, philosophical trajectory, experimental innovations, institutional triumphs, and theoretical legacy. Across twelve detailed dimensions, it traces how a young Georgian intellectual, exiled from his gymnasium during the revolutionary fires of 1905, evolved into one of the most formidable scientific architects of the Soviet era. By scrutinizing his classic haptic and cross-modal illusion paradigms, his clinical typologies of mental illness, his pioneering semiotic theory of “objectification,” and his precarious survival amid the suffocating ideological dogmatism of the late Stalinist period, this study restores Uznadze to his rightful position as a titan of global psychological science whose theoretical formulations continue to hold profound implications for the contemporary philosophy of mind.

1. Biographical Origins and Intellectual Formation (1886–1917)

1.1 Early Life and Early Education in Georgia

Dmitriy Nikolaevich Uznadze was born on December 20, 1886 (December 8 according to the Julian calendar), in the small village of Sakara, nestled in the Kutaisi Governorate of western Georgia, then an integral province of the Russian Empire. The late nineteenth century was a period of tumultuous sociocultural transformation across the South Caucasus. The abolition of serfdom several decades prior had fractured the traditional agrarian social order, unleashing an era marked by rapid modernization, imperial Russification policies, and the simultaneous awakening of a fierce, intellectually sophisticated Georgian national liberation movement. Uznadze was born into a peasant family whose modest economic standing stood in stark contrast to their deep reverence for cultural literacy and intellectual achievement, a dynamic that catalyzed his early commitment to rigorous scholarship.

Recognizing the child’s precocious intellectual capacities, his family secured his admission to the Kutaisi Classical Gymnasium, one of the premier secondary educational institutions in the region. The gymnasium served as an intellectual crucible where classical Greco-Roman scholarship, rigorous mathematics, and Russian imperial curricula collided with clandestine circles of radical political thought. During this period, Kutaisi was a hotbed for social democratic agitation, populist organizing, and cultural revivalism spearheaded by the legacy of writers such as Ilia Chavchavadze and Akaki Tsereteli. As an adolescent, Uznadze immersed himself not only in formal languages and sciences but also in illegal democratic and socialist student circles that debated the political destinies of the Russian Empire and Georgia.

The convergence of ideological ferment and imperial repression reached a dramatic boiling point during the Russian Revolution of 1905. The young Uznadze, animated by deeply held commitments to democratic freedoms and educational autonomy, actively organized and participated in student strikes and political protests directed against the tsarist autocracy. His political visibility and uncompromising resistance resulted in his administrative expulsion from the Kutaisi Gymnasium in 1905, barring him from completing his secondary education within the imperial institutional apparatus. This punitive measure, intended to silence a dissident youth, instead served as the decisive catalyst for his intellectual expatriation, compelling him to seek advanced academic training within the venerable university halls of Western Europe.

Even in this early, tumultuous phase of his life, Uznadze’s intellectual inclinations revealed a profound dual allegiance. On one hand, he was drawn to the systematic rigor, empirical methodologies, and universal humanism characteristic of the European Enlightenment; on the other, he remained rooted in the existential concerns, linguistic pride, and historical trauma of the Georgian nation. This dialectical tension between universal philosophical inquiry and regional cultural responsibility would define the trajectory of his entire intellectual life, driving his ultimate return to his homeland to build the institutional pillars of Georgian scientific psychology.

1.2 European Academic Training in Germany and Switzerland

Following his expulsion in 1905, Uznadze made the perilous journey to Germany, enrolling at the University of Leipzig, which was at that time the uncontested epicenter of the burgeoning discipline of scientific psychology. It was here that Wilhelm Wundt had founded the world’s first formal psychological laboratory in 1879, institutionalizing the empirical study of the human mind through controlled introspection, chronometric measurements, and psychophysical analysis. Uznadze immersed himself in Wundtian experimentalism, mastering the intricate instrumentation of the Leipzig laboratory, including tachistoscopes, kymographs, and chronoscopes. However, while deeply respectful of Wundt’s empirical rigor, Uznadze grew increasingly dissatisfied with the atomistic, elementaristic presuppositions of structural psychology, which sought to dissect the seamless flow of mental life into isolated sensory fragments.

Seeking a deeper epistemological foundation to resolve the limitations of sensory atomism, Uznadze transferred his intellectual energies toward philosophy, matriculating at the University of Halle-Wittenberg. At Halle, he came under the decisive influence of the prevailing Neo-Kantian currents that dominated German philosophical discourse. Mentored by prominent thinkers steeped in both critical idealism and early phenomenological aesthetics, such as Rudolf Eucken and Alois Riehl, Uznadze wrestled with the transcendental problem of knowledge: how the human subject actively constructs and synthesizes sensory impressions into coherent, meaningful representations of reality, rather than passively mirroring external physical impressions.

In 1909, Uznadze completed his doctoral dissertation at Halle, earning the degree of Doctor of Philosophy. The subject of his dissertation was surprisingly theological and metaphysical: Die metaphysische Weltanschauung Wladimir Solowjows (“The Metaphysical Worldview of Vladimir Solovyov”). In this exhaustive treatise, Uznadze subjected the complex religious philosophy and epistemological epistemology of Vladimir Solovyov to rigorous critical analysis. He was particularly fascinated by Solovyov’s concept of “integral knowledge” (tsel’noe znanie)—a theoretical stance positing that neither rationalism nor empiricism alone could capture the totality of being without a holistic, intuitive apprehension that precedes reflective thought. This philosophical inquiry into the pre-reflective, synthetic foundation of knowledge would quietly become the master blueprint for his eventual psychological theory of set.

Following the successful defense of his dissertation, Uznadze pursued post-doctoral studies and academic residencies, most notably at the University of Geneva in Switzerland. Geneva was then emerging as an intellectual rival to Leipzig, propelled by the functionalist and developmental psychology of Théodore Flournoy and Édouard Claparède. Unlike the static structuralism of Wundt, the Swiss school conceived of mental life dynamically, viewing cognitive functions through the lens of biological adaptation, teleological utility, and genetic development. This Swiss encounter exposed Uznadze to an alternative paradigm that married empirical observation with a biological, organismic perspective, providing the final essential component of his multifaceted intellectual foundation.

1.3 Return to the Russian Empire and Pre-Revolutionary Activities

Upon his return to the Russian Empire in 1909, Uznadze confronted the harsh realities of imperial academic bureaucracy. His German doctoral degree, despite its intellectual distinction, was not formally recognized by the Ministry of Public Education for university-level instructional appointments. Demonstrating extraordinary perseverance, Uznadze completed the grueling non-resident degree requirements at the Imperial University of Saint Petersburg, passing the rigorous historical-philosophical state examinations in 1913 to achieve formal imperial academic certification. During this period, he maintained a vibrant dialogue with leading Russian philosophers and psychologists, absorbing the debates surrounding positivism, historical materialism, and idealist metaphysics.

Barred initially from securing a university professorship due to his political past and imperial restrictions, Uznadze returned to Kutaisi, where he threw himself into the educational and cultural life of western Georgia. He took up instructional positions teaching history, pedagogy, and formal logic at the Kutaisi Gymnasium for Girls and within the educational institutions established by the “Society for the Spreading of Literacy among Georgians” (the legendary Sinatle organization). This pedagogical period was far from an intellectual retreat; it served as an applied testing ground where Uznadze directly observed the cognitive, behavioral, and developmental realities of young learners, convincing him that existing educational techniques were crippled by an unscientific understanding of the human mind.

During these pre-revolutionary years, Uznadze published a prolific series of scholarly treatises, essays, and public lectures in both Georgian and Russian. His writings ranged from ethical evaluations of Friedrich Nietzsche and Immanuel Kant to aesthetic critiques of classical literature, alongside specialized monographs addressing the epistemological status of formal logic. Crucially, he played an instrumental role in formulating modern national educational standards, authoring native-language textbooks on world history and pedagogy designed to modernize the Georgian educational apparatus while preserving its unique cultural identity.

Gradually, this intensive engagement with pedagogical practice, combined with his theoretical dissatisfaction with classical philosophy, precipitated a decisive shift in Uznadze’s intellectual trajectory. Abstract metaphysical speculation, even when informed by Neo-Kantian rigor or Solovyovian holism, appeared increasingly inadequate for solving the concrete dilemmas of human behavior, learning, and consciousness. He realized that philosophy possessed the diagnostic tools to expose the limitations of mechanical atomism, but lacked the experimental methodologies required to verify alternative models. Thus, by 1917, on the precipice of epochal political revolutions, Uznadze had resolved to transition entirely from speculative philosophical inquiry to empirically grounded, experimental psychological science.

2. Philosophical Foundations: From Neo-Kantianism to Psychology

2.1 The Epistemological Crisis of Positivist Psychology

At the dawn of the twentieth century, the young discipline of scientific psychology found itself trapped within an acute epistemological crisis, a condition famously diagnosed by contemporary thinkers across Europe, including Edmund Husserl, Karl Bühler, and Lev Vygotsky. As psychology struggled to liberate itself from metaphysical philosophy and claim legitimate status as an autonomous natural science, it unreflectively embraced a crude positivist epistemology. This positivism manifested primarily as atomistic associationism, pioneered by the British empiricists and methodologically canonized by Wilhelm Wundt and Edward Titchener, which posited that human mental life could be exhaustively explained by decomposing complex consciousness into primary, indivisible elements: sensations, feelings, and images, linked together by mechanistic laws of association.

Uznadze subjected this atomistic paradigm to a devastating critique. Drawing heavily upon his Neo-Kantian training, he argued that associationism suffered from an unbridgeable conceptual error: it treated conscious states as passive collections of self-contained psychological “atoms” that collided and aggregated like physical particles in a vacuum. Uznadze observed that this model rendered it impossible to explain the synthetic unity of apperception—the self-evident philosophical and experiential fact that human consciousness experiences the world not as an incoherent kaleidoscope of sensory flashes, but as unified, coherent, and meaningful totalities. The atomists had confused the abstract post-hoc analytical products of psychological introspection with the primary, immediate reality of living psychological experience.

Simultaneously, Uznadze rejected the burgeoning reductionism of mechanical behaviorism that was gaining ascendancy through John B. Watson in the United States and the reflexive physiologists in Russia. Behaviorism, in its bid to discard the unscientific ambiguities of introspective consciousness, amputated the psychological subject entirely, reducing action to a mechanical reflex arc: the famous Stimulus-Response ($S \rightarrow R$) formulation. For Uznadze, behaviorism was merely associationism turned inside out; it replaced introspective mental atoms with physiological reflex atoms, leaving the core philosophical problem unresolved. Both frameworks operated on what Uznadze termed the postulate of immediacy—the unverified dogma that an objective stimulus acts directly and unmediatedly upon an organism to evoke an immediate psychological or behavioral effect.

Uznadze argued that an intermediary link was fundamentally missing from both models. Between the objective physical stimulus and the subjective mental or behavioral response stood the living subject in its totality. The central epistemological challenge of modern psychology was to reconcile the strict natural-scientific determinism demanded by experimental science with the teleological, purposive reality of human consciousness. To achieve this, psychology required an entirely new conceptual vocabulary that avoided both the dualistic mysticism of Cartesian mentalism and the lifeless reductionism of physiological mechanism.

2.2 The Search for the Pre-Reflective Subject

To overcome the dead ends of positivist psychology, Uznadze initiated a sustained philosophical search for what he identified as the “pre-reflective subject.” Traditional Cartesian epistemology had anchored the subject exclusively within the illuminated sphere of conscious awareness: the cogito, a thinking substance transparent to itself through inward introspection. Uznadze, however, maintained that consciousness cannot be the primary, generative ground of mental activity. When a human being acts, perceives, or makes an immediate judgment, the conscious appraisal of the situation is not the initial spark of the event; rather, consciousness represents a secondary, derived, and specialized stage of mental functioning.

This insight brought Uznadze into deep philosophical dialogue with the emergent school of phenomenology, particularly the early works of Edmund Husserl. Husserl’s critique of psychologism and his formulation of intentionality—the structural property of consciousness whereby all consciousness is always consciousness of something—deeply informed Uznadze’s framework. Yet Uznadze pushed beyond classical Husserlian phenomenology. While Husserl focused primarily on the intentional acts of reflective consciousness, Uznadze asserted that intentionality itself must be rooted in a pre-intentional, ontological state of the psychophysical organism. In phenomenological terms, Uznadze was searching for the operative intentionality (fungierende Intentionalität) that functions silently beneath the surface of explicit cognitive acts.

Ontologically, Uznadze defined the psychological subject not as an abstract epistemic spectator, but as an active, living biological and social organism situated dynamically within an objective environment. The subject is continually exposed to external reality, not as an isolated mind contemplating detached sensory representations, but as an integrated totality engaged in the perpetual task of sustaining life and achieving goals. Thus, the relationship between the subject and the world cannot be modeled as a relationship between two separate Cartesian substances—a thinking mind (res cogitans) and an extended physical reality (res extensa).

Instead, Uznadze formulated a robust, holistic psychophysical monism. In this framework, the mental and the physical are not two parallel ontological tracks, nor is the mental a mere epiphenomenon of neurochemical circuitry. Rather, they are two divergent manifestations of a singular, underlying structural reality: the total dispositional state of the acting subject. Before an individual experiences a conscious perception or executes an explicit voluntary motion, their entire organism undergoes a pre-reflective adjustment that aligns internal somatic resources with the demands of the external field. It was this pre-reflective, holistic adjustment that Uznadze would designate as the psychological “set.”

2.3 Teleology and Function in Mental Life

A crucial cornerstone of Uznadze’s theoretical architecture was his unapologetic reintroduction of teleology—understood not as a mystical, supernatural design, but as biological purposiveness—into the heart of empirical psychology. Classical mechanistic science, beholden to seventeenth-century physics, had systematically purged final causes (teleology) in favor of efficient causes (mechanical determinism). In psychology, this produced models that viewed the organism as a passive automaton pushed from behind by environmental forces. Uznadze vehemently countered that life is inherently purposive; living organisms are defined by their capacity for directed self-regulation, goal-seeking, and environmental adaptation.

At the center of this functionalist teleology lies the concept of need (potrebnost). According to Uznadze, need is the prime ontological motor of all psychological activity. A need represents an internal condition of vital disequilibrium—a state of tension within the organism signaling a lack of something required for its physical survival, social development, or intellectual fulfillment. Needs can be primitive and biological (such as hunger, thirst, or sexual reproduction) or advanced and culturally generated (such as the need for aesthetic creation, intellectual coherence, social recognition, or ethical consistency). Regardless of its hierarchical level, a need never exists in an abstract vacuum; it operates as a dynamic, directional charge seeking satisfaction within an objective reality.

However, a need alone cannot directly produce an adapted behavior. A starving animal cannot satisfy its hunger by the mere brute force of its somatic drive; it must interact with an actual environment containing food. Therefore, behavior emerges only at the precise point of intersection between two independent variables: an internal Need within the subject, and an Objective Situation capable of fulfilling that need. The passive reflex arc postulated by classical behaviorism ($S \rightarrow R$) failed entirely to account for the internal selective state of the organism: a food stimulus elicits voracious consuming behavior if the organism is starving, but evokes indifference or active disgust if the organism is completely satiated.

Uznadze synthesized these insights into an integrated model of functional adaptation. When an internal need encounters a congruent environmental situation, their functional meeting instantly transforms the organism as an indissoluble whole, inducing an internal state of behavioral readiness. This state of readiness is teleological because it is structurally oriented toward a future outcome: the anticipated satisfaction of the need through an upcoming behavioral act. Thus, human action is not blindly driven by the mechanistic pushes of past stimuli; it is pulled forward by the structural dynamics of pre-reflective internal readiness. This theoretical integration of internal purpose, physical ecology, and somatic readiness provided the conceptual launching pad for Uznadze’s experimental life work.

3. Institutional Leadership: The Foundation of Georgian Psychology

3.1 The Co-Founding of Tbilisi State University (1918)

The collapse of the Russian Empire in the wake of the 1917 Bolshevik Revolution presented the Georgian intelligentsia with a historic opportunity to realize long-suppressed national and cultural aspirations. In early 1918, amidst geopolitical instability, the Democratic Republic of Georgia declared its independence. In that very same crucible of political sovereignty, a consortium of world-class Georgian scholars who had trained in the leading academies of Western Europe and Russia returned home to establish the nation’s first modern higher educational institution: Tbilisi State University (TSU), formally inaugurated in February 1918.

Alongside historical luminaries such as the historian Ivane Javakhishvili (the university’s guiding visionary) and the chemist Petre Melikishvili (its first rector), Dmitriy Uznadze served as one of the essential co-founders of the institution. He recognized that national sovereignty would remain a hollow political shell without an autonomous, rigorous institutional infrastructure dedicated to advanced scientific inquiry and the cultivation of native intellectual elites. Uznadze was entrusted with the monumental task of establishing the university’s psychological and pedagogical faculties, transforming psychology from an obscure sub-discipline buried within theological seminaries into a fully autonomous, empirically rigorous, and modern academic discipline.

Uznadze was appointed Professor and Head of the newly created Department of Psychology at TSU, a position he held with extraordinary dedication until his death in 1950. In this capacity, he faced the immediate, formidable challenge of having to design an entire university curriculum from scratch in the Georgian language. Because centuries of imperial linguistic suppression had prevented Georgian from developing a standardized modern scientific terminology for advanced psychology, Uznadze personally undertook the task of linguistic and scientific modernization. He coined, adapted, and standardized hundreds of psychological, philosophical, and psychophysical terms, anchoring them naturally within the rich linguistic morphology of the Georgian language.

Between 1918 and the mid-1920s, Uznadze authored a pioneering series of foundational university textbooks written entirely in Georgian. These monumental volumes included Foundations of Experimental Psychology (1925), Child Psychology (1927), and Logic (1923). These works were not mere instructional compilations or derivative translations of Western European manuals; they were rigorous, systematic syntheses that interwove European psychophysics, functionalist biology, Neo-Kantian epistemology, and his own emerging experimental insights regarding the nature of set. Through these textbooks, Uznadze established an exceptionally high standard of scientific rigor for generations of students, cementing Tbilisi as a major intellectual capital within the broader Eurasian scientific landscape.

3.2 The Institute of Psychology of the Georgian Academy of Sciences

As the fame and empirical productivity of the Tbilisi psychological school expanded throughout the 1920s and 1930s, the need for a dedicated, specialized research institute independent of purely instructional university responsibilities became acutely urgent. In 1941, coinciding with the formal establishment of the Academy of Sciences of the Georgian SSR, Uznadze spearheaded the creation of the Institute of Psychology within the Academy. He was appointed its founding director, a role that endowed him with the institutional authority necessary to execute an expansive, multi-decade research program that brought international renown to the Georgian school.

Under Uznadze’s visionary leadership, the Institute of Psychology was organized not as a fragmented collection of disparate laboratories, but as a unified, systematically coordinated research apparatus entirely dedicated to unpacking the ramifications of Set Theory. He established specialized sectors focusing on general experimental psychology, child and developmental psychology, zoopsychology (animal behavior), pathopsychology, industrial psychology, and the psychology of language. Every department operated within the shared theoretical matrix of the theory of set, testing its validity across diverse phylogenetic, ontogenetic, and clinical domains.

Uznadze possessed an extraordinary talent for pedagogical mentorship, cultivating a brilliant constellation of disciples who would become world-class scientists in their own right. Key figures included Revaz Natadze, who made monumental contributions to the study of perceptual set and imagination; Shota Chkhartishvili, who deeply explored the problems of motivational set, will, and character; Akaki Baindurashvili, who pioneered semantic studies of phonetic symbolism; and I. T. Bzhalava, who applied the set paradigm extensively to psychiatric diagnostics. Under Uznadze’s watchful guidance, these scholars published hundreds of specialized studies that established the theoretical coherence of the “Georgian School of Psychology.”

Crucially, Uznadze navigated the complex, frequently perilous landscape of the Soviet scientific hierarchy with profound political skill. In the Soviet Union, scientific disciplines were subjected to ideological monitoring, dogmatic purges, and the forced enforcement of ideological uniformity. Uznadze managed to preserve an extraordinary degree of theoretical autonomy for his Institute. He protected his researchers from the destructive factional warfare that periodically devastated scientific institutes in Moscow and Leningrad, creating an intellectual oasis in Tbilisi where rigorous, non-reductionist psychological science could flourish uncorrupted by superficial political opportunism.

3.3 Creation of an Experimental Infrastructure

The enduring triumph of the Georgian psychological school was not merely theoretical; it was underpinned by the creation of an experimental laboratory infrastructure. Uznadze understood that to defeat mechanistic associationism and Cartesian mentalism, he could not rely on philosophical polemics alone; he had to defeat them on the laboratory floor, utilizing precision psychophysical instrumentation and quantitatively undeniable empirical demonstrations.

From the early 1920s onward, Uznadze oversaw the design, construction, and deployment of dedicated psycho-physiological laboratories at both Tbilisi State University and the Institute of Psychology. He imported state-of-the-art apparatuses from Germany and the United States—including precision Hipp chronoscopes, kymographs for recording somatic motor outputs, and specialized tachistoscopes for instantaneous visual presentation—while simultaneously designing unique, custom-built testing apparatuses constructed by local Georgian precision craftsmen. These custom tools included specialized esthesiometers, tactile discrimination domes, custom stereoscopes, and precisely calibrated weighted spheres designed to investigate haptic perception.

Beyond basic laboratory infrastructure, Uznadze established sweeping, nationwide testing networks across Georgian schools, kindergartens, and industrial facilities. This infrastructure was utilized to conduct massive, longitudinal developmental studies. Thousands of children across urban and rural demographics were systematically tested using standardized set-induction paradigms, allowing the Georgian researchers to chart the precise ontogenetic trajectory of set formation, plasticity, and stabilization across childhood and adolescence. These large-scale normative datasets provided the empirical bedrock for his sweeping pedagogical reforms.

Furthermore, Uznadze coordinated direct experimental pipelines connecting his research laboratories with psychiatric clinics, most notably the Asatiani Psychiatric Research Institute in Tbilisi. This institutional collaboration enabled researchers to deploy laboratory set paradigms directly to the bedsides of patients suffering from schizophrenia, epilepsy, manic-depressive psychosis, and organic brain trauma. By synthesizing pure experimental psychophysics, nationwide developmental screening, and clinical neuropsychiatric diagnostics into a coherent institutional pipeline, Uznadze created one of the most operationally sophisticated psychological complexes in the world.

4. The Genesis and Architecture of the Theory of Set (Ustanovka)

4.1 The Core Concept of Set Defined

The absolute centerpiece of Dmitriy Uznadze’s intellectual life is the Theory of Set (Russian: Ustanovka; Georgian: ganwyoba). To comprehend this concept, one must immediately purge modern, colloquial English definitions of the word “set” (such as a simple cognitive expectation, a conscious mental mindset, or an isolated motor posture). In Uznadze’s precise scientific lexicon, a Set is defined as a pre-conscious, integral, holistic state of internal readiness of the entire subject for directed, goal-oriented activity.

A set is not an isolated cognitive act, an ephemeral mental image, a bundle of motor reflexes, or an introspectively accessible thought. Rather, it is the primary, integrated state of the whole person—unifying psychological, physiological, and somatic dimensions into a focused vector of readiness. Uznadze formulated what he termed the fundamental triad governing the genesis of any set:
$$\text{Set} = f(\text{Need}, \text{Objective Situation})$$
A set arises inevitably at the dynamic intersection of an internal Need existing within the subject and an Objective Situation in the environment that contains the material conditions necessary to satisfy that need. If an organism possesses a need but finds no environmental conditions for its fulfillment, no set can emerge; conversely, if an environmental situation presents itself but the organism experiences no corresponding internal need, the environment remains psychologically silent, evoking no internal readiness.

The primary evolutionary and cognitive function of the set is to act as a vital biological and psychological mediator, preventing cognitive fragmentation. Without the set, an organism would be continuously bombarded by millions of disconnected, incoming sensory stimuli, forced to process each atom of information from scratch through slow, deliberative conscious reasoning. The set solves this problem by organizing the entirety of the psychophysical apparatus in advance. Once a set is induced, it operates as a selective perceptual lens and an action-guiding framework, instantly filtering sensory inputs and funneling motor execution toward the fulfillment of the active need.

Crucially, Uznadze drew a sharp, non-negotiable distinction between fleeting psychological states and the underlying structural disposition of the set. A conscious thought, a passing emotion, or a sudden sensory glance are superficial events occurring within the shifting stream of awareness; a set, by contrast, is the deep, structural, organizing matrix that produces, shapes, and regulates those very conscious events. It is a stable, enduring modification of the total personality that persists silently beneath the threshold of awareness until the conditions for its execution or transformation are realized.

4.2 The Primary Level of Mental Life

To rigorously articulate where the set resides within the human organism, Uznadze formulated his famous two-level model of the psyche. In this architecture, human mental activity is divided into two structurally distinct, hierarchically ordered planes:

• The Primary Plane (Pre-Conscious, Set-Governed Behavior): This is the foundational, evolutionary baseline of mental life. On this plane, the organism functions as a unified whole, interacting immediately, smoothly, and successfully with its objective environment without the intervention of conscious reflection. A person walking down a familiar staircase, an experienced driver shifting gears on an open highway, an athlete dodging an opponent, or an infant reaching for a feeding bottle operates almost entirely on this primary plane. Behavior here is directly mediated by the set: the situational cues seamlessly engage the internal readiness, triggering flawless motor and perceptual execution. The subject does not “think” about what they are doing; they simply do it, sustained by a pre-reflective harmony between internal need and external reality.
• The Secondary Plane (Conscious, Objectified Mental Operations): This is the higher, distinctly human sphere of reflective awareness, conceptual deliberation, and voluntary control. This plane is not continuously active; rather, it is evoked into existence only when activity on the primary plane suffers a breakdown or disruption. When an automatic, set-driven behavior encounters an unforeseen obstacle—such as missing a step on the stairs, experiencing a vehicular engine stall, or encountering an ambiguous visual pattern—the seamless flow of behavior collapses. It is at this exact moment of failure that the secondary plane is born.

Uznadze insisted that the primary plane is not merely a collection of mechanical motor habits, as early behaviorists assumed. It is fully psychological, possessed of intentional direction, structural meaning, and functional adaptation, yet it remains completely pre-reflective. Personality is not an abstract entity that resides solely in conscious deliberation; rather, the total personality exists, acts, and expresses its fundamental orientations primarily at this primary level through the medium of its sets.

The transition mechanics from non-conscious behavioral execution on the primary plane to conscious monitoring on the secondary plane represent one of Uznadze’s most profound theoretical insights. The set acts as the essential, invisible foundation for all higher cognitive operations: conscious perception does not build the set; rather, the pre-existing set actively constructs, stabilizes, and determines what is allowed to enter into conscious perception, voluntary motor action, and deliberate intellectual judgment.

4.3 Overcoming the Postulate of Immediacy

The philosophical and methodological brilliance of Uznadze’s theoretical architecture is most vividly demonstrated in his systematic dismantling of what he identified as the catastrophic error of classical psychology: the Postulate of Immediacy. For centuries, diverse and warring factions within psychological science had unwittingly shared a single, fatal epistemological assumption. This assumption held that psychological phenomena—whether introspectively observed thoughts or externally measured behavioral responses—are determined immediately by the direct impact of preceding stimuli or previous conscious states.

This postulate took two historical forms:

• The Cartesian-Introspective Form: The belief that a conscious mental state is directly caused by a preceding conscious mental state ($C_1 \rightarrow C_2$), accessible entirely through inward introspection.
• The Behaviorist-Reflexive Form: The belief that an external, physical stimulus immediately causes an overt behavioral response ($S \rightarrow R$), accessible entirely through physical observation.

Uznadze demonstrated that both models were fundamentally false because they were blind to the massive, unobserved intermediary process that stands between the input and the output. An objective stimulus never encounters a tabula rasa; it strikes an organism that is already predisposed, internally configured, and structurally oriented in a specific direction. The formula of mental life is not $S \rightarrow R$, but:
$$S \rightarrow [\mathbf{Subject / Set}] \rightarrow R$$
The identical physical stimulus can produce diametrically opposite behaviors, or no behavior at all, depending entirely upon the nature of the internal Set that has been fixed within the subject prior to the presentation of that stimulus.

By exposing and overcoming the postulate of immediacy, Uznadze achieved a methodological breakthrough of the first magnitude. He demonstrated that introspective psychology was inherently limited because it could observe only the secondary, conscious products of the set, remaining blind to the pre-conscious set itself. Simultaneously, he showed that behaviorism was hopelessly shallow because it ignored the internal, holistic organizing state of the subject, mistaking peripheral muscle twitches for the true reality of human behavior. The theory of set thus provided psychology with a rigorous, non-reductionist path forward, transforming the subject from a passive stimulus-processing machine into an active, self-regulating, and structurally oriented agent.

5. Methodological Innovations: Experimental Paradigms of Set

5.1 The Classic Haptic Illusion Paradigm

To elevate the concept of set from a brilliant philosophical hypothesis to an irrefutable, quantitatively verified empirical reality, Uznadze developed an ingenious series of experimental paradigms. The most celebrated and historically foundational of these was the Classic Haptic Illusion Paradigm, an experimental procedure designed to induce, measure, and analyze the dynamics of the set within the laboratory under strict psychophysical controls.

The experimental setup was deceptively simple yet profoundly revealing:

• The Fixation Phase: A human subject, blindfolded to eliminate visual interference, is seated comfortably in the laboratory. The experimenter presents two spheres simultaneously to the subject’s outstretched hands: a heavy, large sphere placed in the left hand, and a light, small sphere placed in the right hand. The subject is instructed to heft and palpate the spheres briefly and state which sphere is larger. This procedure is repeated systematically across a series of consecutive “fixation trials”—typically between 10 and 15 repetitions. Through these repeated presentations, the dynamic triad of Need (following the experimenter’s task instructions) and Objective Situation (the unequal spheres) rapidly induces and fixes an internal state of readiness: a Set specifically calibrated to process and expect massive physical inequality between the left and right hands.
• The Critical (Test) Phase: Without warning, on the critical trial (e.g., trial 16), the experimenter substitutes the unequal spheres with two absolutely identical spheres of equal size and mass, placing one in each hand. The subject is again asked to judge their comparative size.

The empirical results were astonishingly consistent and robust across thousands of experimental runs. Instead of perceiving the two spheres as equal, subjects experienced a powerful, vivid, and unmistakable perceptual illusion. In the overwhelming majority of healthy adult subjects, a dramatic contrast illusion was observed: the identical sphere placed in the hand that had previously held the small sphere was perceived as dramatically larger than the identical sphere placed in the hand that had held the large sphere. The subject’s perception was literally distorted by the lingering momentum of the internal set that had been fixed during the preliminary trials.

Under specific conditions—such as presenting the critical spheres for a fraction of a second, using subliminal contact, or testing specific clinical populations—an alternative assimilative illusion was observed. In these cases, the subject perceived the critical equal spheres as continuing to match the original unequal configuration (e.g., still feeling the left sphere as significantly larger). Uznadze developed rigorous quantitative metrics to calculate the precise mathematical properties of set dynamics: the number of fixation trials required to establish a set (fixation speed), the persistence of the illusion across successive presentations of equal spheres (extinction rate), and the shifting thresholds between contrast, assimilation, and objective perception. This paradigm proved conclusively that perception is not an unmediated readout of sensory receptors, but an active construction dictated by a pre-existing internal set.

5.2 Visual, Auditory, and Tachistoscopic Experiments

A skeptic of Uznadze’s early findings might have argued that the haptic illusion was merely an isolated physiological artifact of peripheral muscular fatigue or local tactile receptor adaptation within the palms of the hands. To decisively demolish this reductionist critique, Uznadze and his research team expanded the set paradigm across every major sensory modality, constructing an array of sophisticated visual, auditory, and tachistoscopic experimental setups.

In the visual domain, Uznadze utilized precision tachistoscopes to project optical stimuli onto a screen for controlled durations measured in milliseconds. In the visual size-discrimination paradigm, subjects were exposed to dozens of fixation exposures featuring two circles of vastly different diameters projected simultaneously onto the left and right sides of a screen. Following the fixation trials, the tachistoscope flashed two circles of identical diameter. Just as in the haptic experiments, subjects experienced an overwhelming optical contrast illusion: the identical circle flashed on the side previously occupied by the smaller stimulus appeared significantly larger. Identical paradigms were successfully executed using differences in visual brightness, color saturation, and geometric line lengths.

In the auditory modality, Uznadze constructed experiments using audiometric oscillators and calibrated earphones. Subjects were exposed to pairs of auditory tones presented dichotically or sequentially, with one ear receiving a tone of high amplitude (volume) and the other receiving a tone of faint amplitude, or tones of varying pitch and duration. When presented with critical trials consisting of tones of perfectly identical volume, frequency, and duration, subjects routinely reported striking auditory illusions, perceiving the identical tone in one ear as markedly louder or higher in pitch, directly mirroring the contrast patterns observed in tactile and visual modalities.

The definitive empirical breakthrough, however, occurred when Uznadze demonstrated the phenomenon of cross-modal (intermodal) transfer of set. In these revolutionary experiments, a set was systematically induced in a subject through one sensory modality, and then tested critically through an entirely different modality. For example, a subject was given 15 fixation trials using the classic haptic paradigm (holding unequal tactile spheres while blindfolded). Then, without any visual fixation trials whatsoever, the blindfold was removed, and the subject was immediately exposed to two visually equal circles on a tachistoscopic screen. Incredibly, the subject experienced the classic contrast illusion visually!

The discovery of cross-modal set transfer was a scientific triumph of immense proportions. It provided indisputable, empirical proof that the Set is not a peripheral, sensory-specific phenomenon located in the tactile nerves of the hand, the retinas of the eyes, or the cochlea of the ears. Rather, the Set is a centralized, holistic state of the entire psychophysical subject. The sensory receptors are merely alternative peripheral channels through which a single, underlying, unified state of organismic readiness expresses itself.

5.3 The Internal Dynamics of Set Extinction and Fixation

Having established the empirical reality and centralized nature of the set, Uznadze shifted his experimental attention toward mapping its internal temporal dynamics. He was particularly concerned with how a set, once induced and fixed within the subject (a state he termed the fixed set, or fiksirovannaya ustanovka), undergoes restructuring, decay, and eventual extinction when confronted with an objective environment that no longer matches its expectations.

To measure these dynamics, Uznadze instituted continuous “extinction trials.” After inducing a powerful fixed set through 10–15 unequal trials, the experimenter did not stop after the first critical trial of equal stimuli; instead, the experimenter continued to present the identical, equal stimuli repeatedly—trial after trial, up to dozens of presentations—meticulously recording the subject’s perceptual judgments on every single trial. This procedure allowed Uznadze to discover that the process of set extinction does not occur as a smooth, instantaneous cessation. Rather, it progresses through distinct, identifiable developmental phases:

1. The Contrast Phase: The initial phase following set fixation, characterized by the dominant, intense contrast illusion. The subject forcefully misperceives the objective equality, perceiving the critical stimuli through an inverted, exaggerated lens.
2. The Fluctuating (Chaotic) Phase: As the repeated objective equality of the stimuli continues to conflict with the internal set, the system enters an unstable, oscillating state. On one trial, the subject perceives the stimuli as equal; on the next trial, the illusion returns; on the next, an assimilative illusion flickers briefly into awareness. The rigid internal model is breaking down under the empirical pressure of discordant sensory inputs.
3. The Assimilative Phase: A brief, transitional state wherein the subject occasionally assimilates the stimuli back into the original expectation, often misjudging them in the direction of the original fixation inequality.
4. The Objective (Extinguished) Phase: The final restructuring of the subject’s disposition. The obsolete fixed set is fully extinguished, and an objective, accurate set is formed that matches the real physical state of the stimuli. The subject now stably, consistently, and accurately perceives the stimuli as completely equal.

Uznadze discovered that the speed, fluidity, and stability with which a person moves through these extinction phases are deeply individualized. Some individuals extinguished the illusion after three or four trials, smoothly updating their internal models to match reality. Others remained trapped within the contrast illusion for forty, fifty, or even one hundred consecutive trials, tenaciously misperceiving objective reality despite overwhelming sensory evidence. These systematic variations led Uznadze to realize that the dynamics of set extinction and fixation offered an unprecedented empirical window into the fundamental architecture of human personality and individual cognitive differences.

6. The Structural Typology of Set: Personality and Individual Differences

6.1 Dynamic Typology: Plasticity versus Rigidity

Uznadze’s empirical investigations led him to construct one of the most sophisticated, experimentally grounded typologies of personality and individual differences in the history of psychology. Unlike classical characterologies based on subjective questionnaires, speculative biographical analyses, or superficial behavioral traits, Uznadze grounded his typology directly in the measurable, psychophysical dynamics of set formation, fixation, and extinction. At the core of this differential psychology sits the fundamental dynamic polarity: Plasticity versus Rigidity.

The Plastic Set represents an optimal, highly adaptive mode of psychophysical organization. Individuals characterized by a plastic set profile demonstrate the capacity to form a clear, well-delineated set rapidly when situational demands arise, but crucially, they possess equal facility in extinguishing and restructuring that set the moment the objective environment changes. When subjected to the classic illusion paradigms, an individual with a plastic set exhibits a robust initial contrast illusion, but as soon as the critical equal stimuli are presented repeatedly, their cognitive architecture rapidly registers the change, transitions smoothly through the extinction phases, and aligns itself accurately with objective reality within a minimal number of trials.

Cognitively and emotionally, individuals possessing high set plasticity exhibit superior problem-solving agility, high intellectual creativity, resilience in the face of environmental unpredictability, and an absence of perseverative cognitive biases. Their internal models of the world are elastic and permeable, continually updating in response to environmental feedback without undergoing systemic disintegration.

Conversely, the Rigid (Inert) Set represents a problematic, maladaptive cognitive disposition characterized by extreme perseveration and resistance to empirical updates. In experimental testing, an individual with a rigid set requires only a few fixation trials to lock an internal orientation into place, but once fixed, this set becomes an immovable cognitive obstacle. When confronted with repeated presentations of equal stimuli, the rigid subject perseverates, clinging to the contrast illusion across dozens or even hundreds of trials. Even when intellectually informed that the stimuli are physically identical, their perceptual system continues to experience the illusion; the pre-conscious set refuses to yield to sensory disconfirmation.

In daily life, set rigidity manifests as dogmatism, cognitive inflexibility, obsessive behavioral routines, emotional obstinacy, and severe difficulty in adapting to novel social, professional, or intellectual environments. The rigid individual continually forces novel, altered situations into obsolete perceptual and behavioral categories, failing to recognize that the ground beneath their feet has shifted. Uznadze’s laboratory developed precise quantitative indices and rating scales to measure this plasticity-rigidity continuum, providing a reliable scientific metric for evaluating individual cognitive elasticity.

6.2 Stability and Variability Profiles

Intersecting the plasticity-rigidity axis, Uznadze identified a second critical structural dimension of personality: Stability versus Lability (Variability). This dimension measures the internal cohesion, boundary integrity, and temporal endurance of a set once it has been established within the organism.

The Stable Set profile is characterized by high structural integrity and exceptional resistance to internal and external interference. Once an individual with a stable set forms an internal readiness oriented toward a specific task or goal, that set remains firmly locked into the psychophysical architecture. Extraneous background noise, unrelated sensory distractions, transient emotional states, or brief interruptions fail to disrupt the vector of activity. In experimental testing, the stable set produces clean, consistent, and predictable illusion curves; the contrast illusion appears reliably, extinguishes systematically, and leaves no residual erratic fluctuations.

Individuals endowed with stable set profiles excel in professions requiring monumental concentration, long-term strategic focus, emotional equilibrium under high stress, and meticulous precision over extended durations—such as surgeons, airline pilots, scientific researchers, and high-level administrators. Their behavioral orientation is thoroughly shielded from the chaotic, shifting currents of environmental noise.

On the opposite end of the spectrum lies the Labile (Unstable or Variable) Set. In individuals with this profile, the internal readiness is porous, weakly integrated, and extraordinarily fragile. A set may be induced with great difficulty, requiring an excessive number of fixation trials, only to decay spontaneously before it can be effectively executed. Any minor, irrelevant environmental distraction—a sudden sound in the laboratory, a momentary flicker of light, an irrelevant thought—causes the labile set to fracture and disintegrate, plunging the subject into a state of behavioral disorientation. In laboratory testing, labile subjects produce wildly erratic, non-reproducible curves: contrast illusions appear and disappear at random, alternating chaotically with assimilative illusions and bizarre perceptual judgments.

In applied contexts, Uznadze’s school utilized these stability-variability profiles for vocational aptitude testing across numerous industrial and military domains. An individual possessing an intensely labile set, regardless of their formal intellectual intelligence, was shown to be acutely unsuitable for high-stakes, safety-critical vocations where split-second attentional stability is required, as their pre-conscious readiness was fundamentally prone to sudden, catastrophic fragmentation under sensory overload.

6.3 Clinical Applications and Pathological Sets

One of the most profound achievements of the Uznadze school was the direct translation of basic experimental psychophysics into the domain of clinical neuropsychiatry. Working in close collaboration with the psychiatric institutes of Georgia, Uznadze, alongside his gifted clinician-disciple I. T. Bzhalava, demonstrated that various psychiatric and neurological illnesses are characterized by pathognomonic, structural distortions of set dynamics. Pathological mental conditions were reconceptualized not as mysterious spiritual disturbances or localized brain lesions, but as systemic breakdowns of the subject’s capacity to form, maintain, and extinguish functional sets.

In patients diagnosed with schizophrenia, Uznadze’s laboratory uncovered a radically abnormal set profile that departed entirely from healthy parameters:

• Schizophrenic patients frequently exhibited what Uznadze termed the dissociated, split, or paradoxical set. In many cases, it proved impossible to fix a standard set using normal parameters; the patients required an extraordinarily high number of fixation trials, yet the resulting set failed to demonstrate cohesive cross-modal transfer.
• When an illusion was induced, it exhibited bizarre, unpredictable mutations: patients frequently displayed violent assimilative illusions rather than contrast illusions, or their perceptual judgments drifted into profound, unanchored variations where the stimuli were perceived as morphing in weight or shape uncontrollably.
• The set in schizophrenia lacked unified, holistic cohesion, mirroring the systemic splitting (spaltung) of cognitive and emotional processes that defines the clinical phenomenology of the disease.

In patients suffering from organic brain damage, severe cerebrovascular trauma, or advanced neurodegenerative dementia, the experimental set paradigm revealed an entirely different pathological architecture: the coarse, static, inert set. In these individuals, the set formed with brutal, unyielding rigidity. Once fixed, the set could almost never be extinguished; patients would continue to report massive contrast illusions across hundreds of trials, exhibiting total perseveration. Their damaged neural substrate was completely incapable of the dynamic, metabolic, and functional restructuring required to update an internal cognitive model.

In patients suffering from epilepsy, testing revealed an exceptionally slow, heavy, and viscous set formation rate—mirroring the characteristic clinical “epileptic viscosity” of thought—followed by extreme, immovable inertia during the extinction phase. In manic-depressive psychosis (bipolar disorder), the set dynamics shifted violently depending upon the clinical phase: hyper-labile, evanescent, and easily fractured sets during the manic state, transforming into heavily inhibited, slow, and rigid sets during the depressive state.

Crucially, Uznadze’s haptic and tachistoscopic set paradigms provided clinical psychiatry with an objective, non-invasive, and non-verbal differential diagnostic methodology. Because the set operates at the pre-conscious, primary level of mental life, its experimental measurement completely bypassed the patient’s conscious verbal rationalizations, feigned symptoms, or communicative impairments. The laboratory apparatus directly interrogated the fundamental, somatic-psychological foundation of the personality, exposing deep-seated neurodynamic pathologies with mathematical precision.

7. Set Theory Versus Western Psychoanalysis and the Unconscious

7.1 Uznadze’s Critique of Sigmund Freud’s Dynamic Unconscious

The formulation of the theory of set inevitably placed Dmitriy Uznadze on a theoretical collision course with the dominant Western paradigm addressing non-conscious mental life: the psychoanalysis of Sigmund Freud. By the 1920s and 1930s, Freudian theory had achieved massive international cultural and clinical hegemony, positing that human behavior is largely driven by a dark, repressed, and dynamic unconscious (das Unbewusste). While acknowledging Freud’s historical service in shattering the narrow Cartesian dogma that equated mind exclusively with conscious awareness, Uznadze mounted an uncompromising epistemological critique of psychoanalysis, arguing that Freud’s model was scientifically flawed, methodologically ungrounded, and philosophically anthropomorphic.

Uznadze’s primary theoretical objection centered on Freud’s conceptualization of the nature of unconscious contents. In psychoanalytic theory, the unconscious is populated by repressed ideas, infantile sexual desires, forbidden wishes, and guilt-laden memories that have been forcefully pushed beneath the surface of consciousness by the psychic agency of the Ego. Uznadze observed that Freud had committed a profound conceptual fallacy: he had simply taken the structure of conscious thoughts and submerged them underwater. In the Freudian paradigm, an unconscious wish behaves exactly like a conscious wish—it plots, desires, rationalizes, and schemes, possessing all the intellectual characteristics of an intentional, reflective mind, only operating behind a closed door.

Uznadze denounced this as an unscientific anthropomorphism: the creation of a hidden “covert homunculus” operating inside the human skull. By conceiving of the unconscious as a submerged second consciousness, Freud had not explained the pre-conscious roots of mind; he had merely duplicated the mind, creating a mystical, dualistic drama between an illuminated “Ego” and a shadowy “Id.”

Furthermore, Uznadze subjected psychoanalysis to blistering methodological criticism. Psychoanalytic theory rested entirely upon subjective, post-hoc clinical interpretations of dreams, free associations, and neurotic symptoms—methodologies that lacked any capacity for quantitative control, experimental replication, or rigorous empirical verification. For Uznadze, psychoanalysis was a modern mythological system disguised as medical science. The true non-conscious foundation of psychological life could never be uncovered through uncontrolled hermeneutic storytelling; it could be revealed only through reproducible, laboratory-controlled psychophysical experimentation.

7.2 The Non-Conscious Nature of the Set

In stark contrast to Freud’s dynamic unconscious, Uznadze formulated a radically alternative ontology of the non-conscious. In the theory of set, the Set is fundamentally non-conscious (bessoznatel’noe)—not because it has been violently repressed by moral censorship, but because of its very ontological nature. The set is an ontological pre-condition for consciousness, not a submerged conscious idea.

The set itself possesses absolutely no sensory images, no conceptual thoughts, no linguistic words, and no affective representations. It is a pure, integrated, dispositional state of psychophysical readiness. Just as the physical law of gravity is not itself a falling rock, but the unseen structural force that determines the trajectory of the falling rock, the set is not a mental content, but the unseen structural matrix that determines which mental contents are generated, perceived, and acted upon. Therefore, to ask a person to introspectively “look inside” and describe their set is as absurd as asking a biological eye to look directly at its own retina while viewing an external landscape.

Furthermore, Uznadze’s model eliminated the perpetual, intrapsychic warfare that characterizes the Freudian psyche. In psychoanalysis, consciousness and the unconscious exist in an eternal state of violent structural conflict: the Id seeks illicit discharge, the Superego punishes, and the Ego desperately constructs defense mechanisms. For Uznadze, the relationship between the non-conscious set and conscious awareness is one of profound functional harmony, cooperation, and structural continuity.

The non-conscious set does not wage war against consciousness; rather, it silently and efficiently serves consciousness. It prepares the organism for action, filters environmental reality, stabilizes perception, and directs voluntary behavior toward the successful fulfillment of vital needs. Consciousness is not an embattled fortress under siege by dark biological drives; it is a specialized, functional tool that is evoked into being precisely when the pre-conscious set requires reflective, analytical assistance to overcome an unforeseen environmental obstacle. Once that obstacle is resolved, control is smoothly returned to the pre-conscious level of the set. Uznadze thus replaced Freudian neurosis and structural antagonism with an elegant, ecologically balanced model of organismic self-regulation.

7.3 Comparisons with Contemporary Western Cognitive Frameworks

When evaluated through the lens of twentieth and twenty-first-century intellectual history, Uznadze’s theory of set displays striking, visionary parallels with several major developments in Western psychology, while simultaneously maintaining its own distinct theoretical identity.

During Uznadze’s own era, the most obvious point of intellectual contact was with Gestalt Psychology, spearheaded by Max Wertheimer, Wolfgang Köhler, and Kurt Koffka, as well as the dynamic topological field theory of Kurt Lewin. Like the Gestaltists, Uznadze waged relentless war against atomism and associationism, insisting that psychological phenomena can be understood only as holistic configurations (Gestalten). Furthermore, Lewin’s concept of “valence” (Aufforderungscharakter)—the notion that environmental objects pull or repel an organism based on its internal needs—resonated profoundly with Uznadze’s triad of Need and Objective Situation.

However, Uznadze maintained a crucial distinction between his system and Gestalt psychology. He argued that the Gestaltists remained trapped in a sophisticated form of perceptual intellectualism; they located the primary organizing forces largely within the external perceptual field itself, attributing holistic organization to intrinsic physical laws governing sensory inputs (such as the laws of closure, proximity, and good continuation). Uznadze countered that the organizing field does not reside out in the sensory stimuli; it resides fundamentally within the internal psychophysical set of the acting subject. Holistic organization is an organismic achievement rooted in biological needs, not a mere property of optical physics.

Decades later, during the American “Cognitive Revolution” of the 1950s and 1960s, Western psychology began to independently reinvent concepts that Uznadze had rigorously formalized in the 1920s and 1930s:

• The pioneering work of Frederic Bartlett on “schemas” and Ulric Neisser’s “perceptual cycle” heavily mirrored Uznadze’s insistence that prior internal frameworks pre-figure all perceptual processing.
• Jerome Bruner’s celebrated “New Look in Perception,” which demonstrated that an individual’s internal motivations, values, and expectations radically alter basic sensory judgments (such as poor children perceiving coins as physically larger than wealthy children did), was essentially an application of Uznadzean set theory, though executed without direct knowledge of the Tbilisi school’s vast, pre-existing empirical corpus.
• Modern paradigms of cognitive priming, implicit attitudes, and non-conscious behavioral priming are methodologically and theoretically continuous with Uznadze’s fixation paradigms.

The tragic historical isolation of Uznadze’s paradigm from mainstream Western discourse was primarily geopolitical. The severe language barrier (his major works were published in Georgian and Russian), combined with the ideological fortress of the Iron Curtain, the academic isolation of the Soviet Union during the Cold War, and the Western psychological establishment’s general indifference to Eastern European scholarship, conspired to keep Uznadze’s towering intellectual synthesis largely cloistered within the boundaries of the Soviet sphere for over half a century.

8. Developmental and Pedagogical Applications

8.1 Ontogenesis of the Set in Child Development

A comprehensive theory of mind must be capable of explaining not only the static functioning of the adult psyche, but also its historical emergence through biological and social development. Dmitriy Uznadze dedicated massive empirical and theoretical resources to tracing the ontogenesis of the set, conducting extensive longitudinal and cross-sectional investigations involving thousands of children ranging from early infancy to late adolescence.

Uznadze’s developmental investigations revealed that the set is an active, functional reality from the very beginning of life, operating as the primary mechanism through which the newborn navigates the physical world. However, the qualitative nature, internal stability, and structural differentiation of the set undergo profound, stage-like transformations as the child matures:

• Early Infancy: The infant functions exclusively through what Uznadze identified as primitive, undifferentiated assimilative sets. At this stage, the infant’s perceptual and motor readiness lacks fine-grained analytical boundaries. When presented with environmental variations, the infant indiscriminately assimilates novel stimuli into its few existing, biologically hardwired needs (such as suckling, grasping, or seeking physical warmth). The capacity to establish a differentiated contrast set—which requires the neurological and cognitive ability to register subtle discrepancies between expectation and reality—is entirely absent.
• Early Childhood (Ages 2 to 5): With the maturation of the nervous system and the explosion of sensorimotor exploration, the child’s set architecture undergoes a decisive structural shift. The capacity for contrast set formation emerges with intense, explosive vitality. Children within this age demographic, when tested in Uznadze’s haptic and visual illusion paradigms, exhibit massive, extraordinarily intense contrast illusions. However, their sets are characterized by extreme dynamic fluidity; they can form a set with lightning speed, but that set is easily fractured, unstable, and prone to rapid, erratic fluctuations under the influence of transient emotional distractions.
• Middle Childhood and School Age (Ages 6 to 12): The set undergoes progressive stabilization and consolidation. The child develops the capacity to fixate a set firmly, hold it across temporal interruptions, and shield it from irrelevant sensory distractions. Crucially, it is during this phase that the higher, secondary plane of mental life—conscious objectification, formal logical reasoning, and deliberate voluntary control—becomes structurally decoupled from immediate, pre-conscious sets, enabling the child to consciously reflect upon, evaluate, and deliberately regulate their own behavioral orientations.

Uznadze’s laboratory developed specialized, standardized diagnostic batteries based on set maturation to evaluate “school readiness.” He demonstrated that premature formal academic schooling was profoundly damaging to children whose set architecture had not yet achieved minimal stability and flexibility. If a child’s sets remained primitive, highly labile, or rigidly assimilative, forcing them into formal instructional environments produced severe cognitive frustration, behavioral dysfunction, and pedagogical alienation.

8.2 Pedagogical Philosophy and Educational Reform

Uznadze’s psychological insights directly informed his revolutionary pedagogical philosophy. As an experienced educator who had spent years teaching in secondary schools, Uznadze harbored a profound, lifelong disdain for traditional, authoritarian instructional systems that treated the student as an empty cognitive vessel to be mechanically filled with rote information through external discipline and drill-based memorization.

At the center of his pedagogical theory stands his famous formulation of the “Tragedy of Upbringing”. This existential and structural dilemma arises from the fundamental mismatch between two opposing forces: the internal, natural developmental needs of the child versus the external, coercive, and cultural demands imposed by adult society. Society requires that the child master complex, abstract cultural skills—such as formal mathematics, grammar, historical chronology, and moral norms—for which the child possesses no immediate biological need. Traditional pedagogy resolves this conflict through brute force: authoritarian compulsion, fear of punishment, and artificial rewards, which ultimately alienates the child from the authentic joy of learning.

To overcome the tragedy of upbringing, Uznadze developed an educational methodology grounded entirely in the theory of set. His central pedagogical axiom was absolute: instruction must never precede the cultivation of the appropriate set. An educator must never attempt to impart a specific skill, rule, or concept until they have first systematically generated within the child an authentic, internal Need that creates an active Set for learning that specific material. If the appropriate set is active within the student, learning ceases to be a coercive, painful labor; it becomes an effortless, natural, and joyful process of functional satisfaction.

This insight led to Uznadze’s profound theory of play. He subjected existing theories of play—such as Herbert Spencer’s “surplus energy theory” and Karl Groos’s “pre-exercise theory”—to rigorous critique. Uznadze argued that play is not a frivolous expenditure of excess energy, nor a mere robotic rehearsal of future adult survival instincts. Rather, play is the supreme, primary psychological activity of childhood because it represents the pure, untrammeled operation of functional needs.

In play, the child acts entirely upon internal, self-generated needs, creating imaginative, rule-governed situations that systematically construct, exercise, and refine complex, nascent sets without the crushing utilitarian pressures of real-world survival. Play is nature’s pedagogical laboratory wherein the child’s cognitive architecture achieves elasticity, structural richness, and creative mastery. Uznadze insisted that progressive education must structurally model its instructional techniques upon the dynamic architecture of play, cultivating intrinsic curiosity and exploratory readiness rather than dead, rote memorization.

8.3 Language Acquisition and Early Mental Operations

Applying the set paradigm to the emergence of communication, Uznadze investigated how young children acquire native and secondary languages. Traditional associationist accounts claimed that a child learns language through a mechanical process of conditioning: an adult points to an object, utters a sound, and the child forms a passive association between the auditory sound and the visual image through frequency and contiguity.

Uznadze dismantled this simplistic account, demonstrating that language acquisition is governed from its inception by a complex communicative set. Long before an infant understands the formal semantic or syntactic properties of words, it responds holistically to the communicative field established between itself and its caregivers. When a mother speaks to an infant, the child does not perceive isolated phonemes; the infant perceives a total, expressive, emotional-behavioral situation that instantly induces an internal set of communicative readiness. This communicative set acts as an acoustic and semiotic filter, enabling the child to isolate human speech sounds from background physical noise and actively attune its developing vocal apparatus to mirror those phonetic structures.

Furthermore, Uznadze analyzed the psychological mechanisms governing early mental operations, demonstrating that the acquisition of speech acts as a catalyst that permanently transforms the primary plane of the set. When a child learns to attach a linguistic word to an object, the word ceases to be a mere physical sound; it becomes a tool of categorization. The spoken word stabilizes and fixates the perceptual set, elevating the child’s mental operations from fleeting, situational impressions to enduring, stable mental representations.

Uznadze’s school conducted pioneering empirical studies on bilingual development, particularly relevant in the culturally diverse Caucasus. His researchers tracked children raised in bilingual environments (fluent in both Georgian and Russian from birth). Associationist psychology predicted that bilingualism would cause severe cognitive confusion, as words from two different linguistic systems would constantly collide and interfere with one another. Uznadze proved experimentally that this interference does not occur if the languages are acquired in natural, functional contexts, because the child develops two autonomous, distinct linguistic sets. The child does not constantly translate between two parallel lexicons; rather, entering a specific linguistic environment instantly activates the entire, integrated set corresponding to that specific language, while the alternative linguistic set remains functionally dormant, ensuring effortless, interference-free code-switching.

9. The Psychology of Language, Thought, and Semiotics

9.1 The Naming Process and Conceptual Representation

Beyond his experimental psychophysics, Dmitriy Uznadze was a profound thinker in the domains of theoretical linguistics, semiotics, and the psychology of higher thought processes. He recognized that the ultimate frontier of psychology was to explain the transition from primitive, animal sensorimotor behavior to the dizzying heights of abstract, conceptual, and symbolic human thought. At the heart of this transition stands the psychological mystery of the naming process.

How does a physical sound become a meaningful symbol for an objective reality? Uznadze rejected the nominalist view that names are arbitrary, external labels mechanically pasted onto pre-existing objects. In his landmark studies on linguistic genesis, Uznadze asserted that the act of naming represents the psychological fixation of an active, practical set. When an individual encounters an environmental object that satisfies a vital need, the subject’s holistic, practical interaction with that object is captured, crystallized, and stabilized through the production of a vocal gesture. The name is born as an active, somatic expression of the subject’s functional relationship to the object.

To provide empirical proof for the organic, non-arbitrary roots of language, Uznadze designed revolutionary experiments exploring phonetic symbolism and “physiognomic speech”—investigations that directly anticipated the famous “Bouba/Kiki effect” popularized decades later by Wolfgang Köhler and Vilayanur Ramachandran. In these experiments, Uznadze presented subjects with completely novel, nonsense pseudowords (such as combinations of soft, rounded vowels versus harsh, sharp consonants) and asked them to match these acoustic sounds to unfamiliar, abstract geometric shapes (some rounded, curved, and undulating; others sharp, jagged, and angular).

The experimental results were definitive: across diverse demographics, subjects demonstrated an overwhelming, statistically undeniable consensus in mapping specific phonemes to specific geometric forms (e.g., matching soft, resonant phonemes to round shapes, and harsh, plosive phonemes to jagged shapes). Uznadze concluded that phonetic symbolism proves that human speech is not an arbitrary cultural convention invented by conscious intellect; it is rooted in deep, universal, pre-conscious physiognomic sets. The acoustic sound and the visual shape evoke an identical, holistic somatic readiness within the organism, providing the organic psychological bridge that allows symbolic communication to emerge.

From this foundational naming process, conceptual representation takes flight. Uznadze traced how thought evolves from primitive “situational concepts”—wherein an object is comprehended only within the narrow, immediate context of its practical physical use—into true “abstract, categorical concepts.” Language liberates the human mind from the immediate tyranny of the sensory field: by naming a reality, the subject establishes a permanent symbolic set that can be evoked, combined, and manipulated internally, giving birth to higher rational cognition.

9.2 The Genesis of the Act of Objectification

Perhaps Uznadze’s single most profound philosophical and psychological contribution to the understanding of the human mind is his theory of Objectification (Russian: ob’ektivatsiya). This concept represents the absolute linchpin of his entire theoretical system, explaining precisely how and why human conscious thought emerges from the pre-conscious, biological baseline of behavior.

As established in his two-level model of the psyche, the vast majority of living activity takes place smoothly on the primary plane, mediated entirely by pre-conscious sets. An organism acts, moves, consumes, avoids danger, and achieves routine goals without ever needing to consciously step back and ponder what it is doing. If an organism’s sets are completely successful in navigating the environment, conscious reflection never arises. The organism remains immersed in a seamless, fluid unity with the world.

However, this fluid unity is fragile. Inevitably, the acting subject encounters an unforeseen rupture, an anomaly, a failure: an action is blocked, a step is missed, an expected food source is absent, a tool snaps in half, or an environmental cue produces an error. It is at this exact moment of crisis that the Act of Objectification is triggered. Objectification is defined as the deliberate, conscious halting of automatic, set-driven behavior, whereby the problematic element of the situation is violently torn out of the background flow of activity, set over against the subject, and transformed into an independent “object” of conscious contemplation and inquiry.

The mechanics of objectification represent a profound evolutionary rupture with purely animal existence:

1. The Interruption of Action: The automatic, habitual behavioral execution on the primary plane suffers an immediate structural block; the active set is frustrated and arrested.
2. The Distancing of the Object: Instead of continuing to strike blindly at the obstacle through futile instinctual thrashing, the human subject halts their somatic motor output, steps back, and separates themselves from the situation. The world ceases to be an unmediated environment in which the organism is submerged; it becomes an objective reality standing over against a thinking subject.
3. The Cognitive Inquiry: The subject asks, implicitly or explicitly: “What is this?” “Why did this fail?” “What are the real properties of this obstacle?” The secondary plane of conscious reflection, conceptual analysis, logical deduction, and voluntary will is now fully engaged.
4. The Re-structuring of the Set: Through conscious deliberation and problem-solving, the subject formulates a new understanding of the situation. This conscious solution is then translated back down into the primary plane, fixing a new, modified, and accurate Set.
5. The Resumption of Action: The conscious mind steps back down into dormancy, and fluent, set-driven action resumes, now successfully overcoming the obstacle.

For Uznadze, Objectification is the defining evolutionary characteristic of the human mind. Animals possess complex, brilliant, and plastic sets; they live, adapt, and learn. But an animal remains forever imprisoned within the unmediated immediacy of the primary plane; when an animal encounters an insurmountable behavioral block, it experiences emotional agitation, frustration, or death—it cannot objectify the situation. Only the human being possesses the capacity to suspend action, split the self from the world, and transform an obstacle into a problem of knowledge. Objectification is thus the birthplace of all human science, philosophy, art, self-consciousness, and genuine free will.

9.3 Semantics, Communication, and Shared Understanding

Extending his semiotic framework into the realm of social psychology, Uznadze analyzed how human beings achieve mutual understanding through verbal communication. Classical information-theoretic models of communication—which model speech as an active speaker encoding a message into a physical signal and a passive listener decoding that signal—were dismissed by Uznadze as mechanistic caricatures that ignore the psychological reality of human social interaction.

Uznadze argued that social communication is fundamentally a process of the mutual alignment and restructuring of participant sets. A speaker does not simply transmit inert semantic data; a speaker executes an intentional speech act designed to perform an active psychological operation: to systematically induce, modify, or shatter the internal Set of the listener. When an individual speaks, their words operate as dynamic semiotic instruments that reach directly into the pre-conscious architecture of the conversational partner, preparing that partner for a specific mode of perception, emotional readiness, or behavioral action.

Consequently, successful communication depends entirely upon the existence of a shared, underlying matrix of contextual presuppositions. Uznadze demonstrated that language can never be understood through isolated lexical dictionary definitions alone. Words derive their functional meaning from the broader, pre-verbal context (kontekst), which acts as a powerful set-stabilizing field. If two interlocutors possess radically discordant, incompatible socio-cultural or situational sets, the most precise and articulate speech will inevitably fail to achieve mutual understanding; the words will be assimilated into the listener’s conflicting set, producing profound semantic distortion, misinterpretation, and communicative breakdown.

This semiotic framework had profound implications for sociological theory and cultural anthropology. Uznadze demonstrated that human culture itself is a vast, interconnected, semiotic architecture of shared, institutionalized sets. Cultural norms, ethical codes, and linguistic conventions function as invisible, collective fields of readiness that ensure social cohesion by silently aligning the pre-reflective behavioral dispositions of millions of individuals, allowing complex cooperative social structures to function smoothly without requiring continuous, exhausting conscious negotiation.

10. Ideological Pressures and Soviet Scientific Politics

10.1 Navigating the Marxist-Leninist Framework in Soviet Psychology

The intellectual journey of Dmitriy Uznadze occurred within one of the most politically tumultuous, ideologically scrutinized, and historically dangerous environments of the modern era: the Union of Soviet Socialist Republics under the rule of Vladimir Lenin and Joseph Stalin. Following the Bolshevik consolidation of power, the Soviet state mandated that all scientific disciplines—particularly those dealing with the human mind, consciousness, and social behavior—must be strictly reconstructed upon the philosophical foundations of Marxist-Leninist ideology, specifically dialectical materialism and Lenin’s famous “theory of reflection” (teoriya otrazheniya).

Psychologists who failed to align their theoretical models with dialectical materialism, or who were suspected of harboring “bourgeois idealism,” “mysticism,” or “cosmopolitan deviations,” faced catastrophic professional and physical consequences: public condemnation, academic stripping of rank, closure of laboratories, imprisonment in the Gulag, or execution. The tragic fates of visionary Soviet intellectuals during the 1930s—such as the execution of biological geneticists like Nikolai Vavilov—served as an ever-present, terrifying warning to all scientific leaders.

Uznadze demonstrated extraordinary intellectual brilliance and political tactical skill in navigating this treacherous ideological minefield. He was neither a cynical, sycophantic party opportunist nor a naive, vulnerable martyr. Instead, he rigorously framed his Theory of Set in terms that were genuinely, structurally compatible with the core tenets of dialectical materialism, while vigorously defending the scientific integrity and independence of his empirical research:

• He argued that his concept of the Set was a profoundly materialist category. The Set was not an ethereal Cartesian spirit, but an objective, somatic-physiological state of a real, living, biological organism interacting with an objective, material environment.
• He framed his destruction of the “postulate of immediacy” as a direct blow against crude, mechanical, undialectical materialism (such as classical behaviorism and vulgar positivism). By demonstrating that the subject acts as an active, dialectical mediator between stimulus and response, Uznadze aligned his theory with Marx’s famous Theses on Feuerbach, which demanded that reality be understood not merely as an object of passive contemplation, but as sensuous, active human practice (praxis).
• He presented his concept of the Act of Objectification as the ultimate confirmation of dialectical philosophy, demonstrating through laboratory experiments that the human mind actively emerges, develops, and transforms through the material overcoming of external physical contradictions.

Through this meticulous philosophical framing, combined with his immense institutional prestige as the co-founder of Tbilisi State University, Uznadze successfully insulated the Georgian school from ideological purges that devastated other academic centers throughout the 1930s and 1940s. He utilized the required Marxist-Leninist terminology not as a hollow ritual, but as an intellectual shield, ensuring that his laboratory in Tbilisi remained a sanctuary of rigorous, uncompromised scientific investigation.

10.2 Debates with the Moscow and Leningrad Psychological Schools

Despite his successful navigation of state censorship, Uznadze was locked in an intense, protracted intellectual rivalry with the dominant psychological schools of Moscow and Leningrad. The Soviet psychological landscape was not a monolithic empire; it was a fiercely competitive terrain where rival factions fought for theoretical supremacy, institutional dominance, and state funding. The two primary rivals to the Georgian school were the Activity Theory (deyatel’nost) school, spearheaded by Alexei Leontiev and Alexander Luria (heirs to the legacy of Lev Vygotsky), and the philosophical-psychological school of Sergei Rubinstein.

The debate between Uznadze’s Set Theory and Leontiev’s Activity Theory was particularly fierce and intellectually profound:

• Leontiev’s Critique: Leontiev argued that “Activity” (the external, socially mediated, objective labor of the human being in the world) was the foundational, primary category of all psychology. Leontiev criticized Uznadze’s “Set,” alleging that it was merely an internal, subordinate “operation” or an ephemeral physiological state tucked away inside an ongoing activity. Leontiev feared that Uznadze was dragging psychology backward into subjective idealism by locating the primary engine of mind inside the subject’s internal disposition rather than in external, socio-historical labor activity.
• Uznadze’s Rebuttal: Uznadze and his disciples (particularly Revaz Natadze and Shota Chkhartishvili) mounted a devastating counterattack. Uznadze asked a simple, structurally unanswerable question: How can any activity begin in the first place without a pre-existing Set? Activity is not a disembodied ghost floating in social history; activity must be initiated by a concrete, living organism. Before an individual can take a single step, pick up a tool, or speak a word of socially mediated labor, their total psychophysical organism must already be aligned, oriented, and prepared to act. The set is not a subordinate moment within activity; the Set is the indispensable, ontological prerequisite for any activity whatsoever.

Simultaneously, Sergei Rubinstein launched critiques from Leningrad and Moscow, attempting to subsume the set under his own famous dialectical formula: “external causes act through internal conditions.” While Rubinstein’s formulation was deeply sympathetic to Uznadze’s critique of the postulate of immediacy, Rubinstein argued that Uznadze had inflated the set into an all-encompassing, imperialistic master-concept that threatened to erase the specific, distinct boundaries between perception, memory, emotion, and intellect.

These intense academic debates flared across high-stakes scientific symposiums, institutional conferences of the USSR Academy of Sciences, and polemical articles published in the leading journal Voprosy Psikhologii (“Problems of Psychology”). The Georgian school maintained an uncompromising, united front. They defended the psychological primacy of the set against all attempts by Moscow to reduce it to a mere footnote of socio-historical activity theory, preserving Tbilisi’s status as an independent, globally unique citadel of psychological thought.

10.3 The Posthumous 1950 Pavlovian Session and Its Aftermath

The most acute ideological crisis in the history of Soviet psychology erupted in the summer of 1950, during the final, paranoid twilight of the Stalinist era. Between June 28 and July 4, 1950, the Soviet state convened the infamous Joint Session of the USSR Academy of Sciences and the USSR Academy of Medical Sciences, known historically as the “Pavlovian Session” (Pavlovskaya sessiya). Orchestrated under the direct supervision of the Communist Party Central Committee, the session had a brutal, totalitarian mandate: to canonize the late Nobel laureate Ivan Pavlov’s physiological theory of higher nervous activity (conditioned reflexes) as the sole, absolute, and exclusive scientific foundation for all medicine, physiology, and psychology across the Soviet Union.

The Pavlovian Session unleashed a devastating wave of scientific purge and ideological reductionism. Non-Pavlovian physiological models—such as the brilliant motor physiology of Nikolai Bernstein and the neurophysiology of Leon Orbeli—were condemned as anti-Marxist heresies. Psychology as an autonomous, subjective science was placed on the chopping block; dogmatic hardliners demanded that all psychological concepts (will, consciousness, set, perception, personality) be entirely discarded and liquidated in favor of peripheral Pavlovian reflex arcs, temporary cortical connections, and excitation-inhibition dynamics. Psychologists throughout Moscow and Leningrad were forced into humiliating, public self-criticisms, confessing to “idealist deviations” and frantically pledging to rewrite their life’s work in the simplistic language of salivating dogs and conditioned reflexes.

Tragically, Dmitriy Uznadze was spared the direct, personal fury of this scientific catastrophe by the timing of his mortality. Exhausted by decades of relentless academic leadership, administrative strain, and intellectual labor, Uznadze passed away in Tbilisi on October 9, 1950, at the age of sixty-three, just three months after the conclusion of the Pavlovian Session. His death was a monumental national tragedy for Georgia, which mourned him as an intellectual father of the nation.

However, his passing left his Institute of Psychology and his devoted disciples—led by Revaz Natadze, Alexander Prangishvili, and Shota Chkhartishvili—in an extraordinarily precarious position, facing the full, predatory brunt of the post-Pavlovian campaign. Dogmatic Soviet physiologists descended upon the Georgian school, aggressively demanding that the Theory of Set be declared an anti-Pavlovian, idealist fabrication. They demanded that the institute abandon the concept of the set and reduce all its laboratory illusion paradigms to peripheral receptor fatigue and crude cortical reflex dynamics.

What followed was an extraordinary demonstration of scientific courage, institutional loyalty, and theoretical brilliance. Uznadze’s disciples completely refused to renounce their master’s legacy. Instead of surrendering, they counterattacked using pure experimental methodology. They invited the dogmatic Pavlovian physiologists to Tbilisi, walked them into the laboratories, and forced them to observe the cross-modal transfer experiments: demonstrating that a set induced in the tactile nerves of the hand transferred instantly to optical judgments in the eyes. They challenged the physiologists to explain this undeniable, whole-organism transfer using isolated, peripheral Pavlovian reflex arcs—a challenge the reductionists were entirely incapable of meeting.

The Georgian school held the line, surviving the dark winter of late-Stalinist dogmatism. Following Stalin’s death in 1953 and the subsequent political thaw under Nikita Khrushchev, the ideological stranglehold of the Pavlovian Session fractured and collapsed. The Georgian school was completely vindicated, experiencing a massive, historic renaissance. Tbilisi was officially re-established as one of the premier psychological research centers of the Eastern Bloc, and the Theory of Set was celebrated across the Soviet Union as a crowning achievement of materialist dialectical science.

11. Major Works and Intellectual Synthesis

11.1 Key Monographic Contributions

The extensive bibliography of Dmitriy Uznadze spans nearly five decades of intense, unbroken scholarship, comprising over a hundred monographs, textbooks, experimental papers, and philosophical treatises. While much of his early output was published in the Georgian language to build the academic infrastructure of his homeland, his mature scientific monographs represent an intellectual synthesis of breathtaking scope and coherence.

Among his most seminal works, four monumental texts stand as enduring pillars of his intellectual legacy:

• The Psychological Foundations of Intuition (1925): Published early in his academic career, this groundbreaking monograph was Uznadze’s initial, systematic assault on the traditional Cartesian philosophy of mind. In this work, he investigated the classical epistemological enigma of “intuition”—the human capacity to grasp truth, solve complex problems, or make instantaneous aesthetic and moral judgments without the apparent intervention of step-by-step conscious reasoning. Analyzing the historical positions of Spinoza, Kant, and Henri Bergson, Uznadze stripped intuition of its mystical, supernatural aura, demonstrating that intuitive knowledge is the direct, natural product of pre-conscious, highly organized sets. This text served as the theoretical prototype for his subsequent decades of laboratory research.
• General Psychology (1940): This monumental treatise was Uznadze’s definitive, systematic masterwork, presenting his complete, integrated architectural model of the human psyche. Moving methodically from the biological foundations of needs and animal behavior to the intricacies of perception, memory, affective life, voluntary will, and the higher acts of objectification, General Psychology remains one of the most comprehensive, philosophically coherent psychological textbooks ever composed. It codified the two-level model of the psyche, establishing the empirical and theoretical vocabulary that governed the entire Georgian school.
• The Psychology of Set (Posthumously published; English translation 1966): Assembled by his dedicated disciples from his definitive, mature manuscripts and published posthumously, this monograph represents the crowning synthesis of his life’s experimental work. Published in the United States in 1966 by Consultants Bureau under the title The Psychology of Set, this volume introduced the English-speaking world to the exhaustive quantitative datasets, the precision illusion paradigms, the cross-modal transfer discoveries, and the individual differential typologies that had been forged in the Tbilisi laboratories over forty years. It remains the essential primary source for global scholars evaluating the empirical validity of his system.
• Philosophical Treatises on Purpose, Culture, and History (Various dates): Throughout his life, Uznadze penned numerous sweeping philosophical essays addressing the tragic nature of human culture, the teleological structure of historical progress, and the ethics of human agency. These writings revealed that Uznadze never ceased to be a profound humanist philosopher; his experimental psychology was not an end in itself, but a scientific instrument designed to illuminate the ultimate existential conditions of human freedom, dignity, and cultural creation.

11.2 Methodological Rigor and Philosophical Coherence

What sets Dmitriy Uznadze apart from many of his historical contemporaries—who were often brilliant philosophers but amateur experimentalists (such as William James), or brilliant laboratory technicians who possessed shallow, unreflective philosophical foundations (such as John B. Watson and Edward Thorndike)—was his seamless, towering integration of qualitative philosophical depth with quantitative psychophysical rigor.

Uznadze was a master of the scientific method. Every single theoretical claim advanced within his overarching system was required to submit itself to the judgment of the laboratory. When he posited the existence of the pre-conscious set, he did not rest until he had constructed the haptic illusion paradigm to prove its physical reality; when he asserted that the set was an integrated state of the whole personality rather than a peripheral nerve adaptation, he invented the cross-modal transfer paradigm to demonstrate it quantitatively; when he argued for individual character profiles, he created mathematically standardized extinction curves to measure set plasticity and rigidity with numerical precision.

Simultaneously, this experimental rigor was guided by an overarching philosophical coherence. Uznadze possessed a deep, systemic mind that rejected ad-hoc, fragmented theoretical explanations. In his scientific architecture, the identical principles that explained the tactile misperception of a small sphere in a laboratory were shown to operate in the child’s spontaneous play, in the schizophrenic’s cognitive dissociation, in the speaker’s choice of phonetic symbols, and in the philosopher’s profound act of conscious objectification. His system was thoroughly parsimonious: ontogeny, psychopathology, psychophysics, semiotics, and general cognitive science were woven together into a single, unified, and aesthetically magnificent tapestry of human mind and action.

This intellectual synthesis was reflected in his distinctive scientific writing style. Uznadze wrote with classical clarity, architectural systematicity, and conceptual rigor. Avoiding the obscure, murky jargon that frequently plagued continental European philosophy, while shunning the dry, lifeless, and superficial reporting that characterized Anglo-American behaviorist journals, Uznadze’s prose was characterized by an urgent, luminous intellectual vitality. He treated scientific psychology not as a mundane technical trade, but as a noble, existential inquiry into the very nature of human reality.

12. Lasting Legacy, International Recognition, and Modern Relevance

12.1 Enduring Impact on Georgian and International Psychology

The historical impact of Dmitriy Uznadze on the cultural and scientific development of Georgia cannot be overstated. He is revered in his homeland not merely as a great scientist, but as a towering national hero alongside Ivane Javakhishvili. By co-founding Tbilisi State University, establishing the Institute of Psychology, authoring the first scientific textbooks in the native language, and creating a globally recognized scientific school, Uznadze played a decisive role in demonstrating the intellectual independence, linguistic vitality, and cultural sophistication of the Georgian nation on the world stage. Today, the D. Uznadze Institute of Psychology continues to operate in Tbilisi, preserving his archives, publishing his collected works, and extending his research paradigms into the twenty-first century.

Internationally, the Georgian school of psychology achieved historic recognition throughout the mid-to-late twentieth century. The ultimate global validation of Uznadze’s vision occurred in October 1979, when the city of Tbilisi hosted the historic International Symposium on the Unconscious. Organized under the leadership of Uznadze’s successor, Alexander Prangishvili, alongside leading French psychoanalysts, American cognitive scientists, and Soviet philosophers, this symposium was an unprecedented, epochal event: it was the first time in history that leading Western psychoanalysts, cognitive psychologists, and Soviet scientists met openly behind the Iron Curtain to debate the nature of non-conscious mental life.

During the 1979 symposium, Western scholars were stunned by the immense, sophisticated corpus of experimental research that had been executed in Tbilisi over the preceding six decades. Uznadze’s Theory of Set was formally recognized by international participants as one of the few viable, rigorously scientific, non-psychoanalytic models of the unconscious ever constructed. His work exerted a massive, enduring influence on developmental psychology, psycholinguistics, and neuropsychiatry across Central and Eastern Europe, shaping generations of researchers across Poland, East Germany, Czechoslovakia, Russia, and Ukraine.

12.2 Modern Cognitive Parallels and Predictive Processing

Viewed from the bleeding edge of twenty-first-century cognitive science, neuroscience, and the philosophy of mind, the theoretical framework of Dmitriy Uznadze appears nothing short of astonishingly prophetic. In many respects, cognitive science over the past two decades has not superseded Uznadze; it has finally caught up to him.

The most breathtaking convergence between Uznadze’s thought and modern science lies in the emergent framework of Predictive Processing and the “Bayesian Brain”, championed by contemporary cognitive scientists and philosophers such as Andy Clark and neuroscientist Karl Friston. Contemporary predictive processing posits that the human brain is not a passive sensory receiver that processes incoming environmental stimuli from the bottom up; rather, the brain is an active, predictive inference engine. The brain continually projects top-down “priors” (internal generative models of expected sensory states) onto the world, testing these priors against incoming sensory signals and updating its models only when it encounters “prediction errors.”

Uznadze’s Theory of Set is, in essence, predictive processing formulated seventy years in advance:

• The Set is the exact operational equivalent of a Bayesian prior: a holistic, pre-conscious internal state of readiness that anticipates the sensory state of the world based on the organism’s vital needs and prior experiences.
• Uznadze’s classic contrast illusion is the perfect, laboratory-verified demonstration of a top-down prediction overriding objective sensory inputs.
• Uznadze’s phases of set extinction map with mathematical precision onto the modern concept of iterative prediction-error minimization, wherein the internal generative model is systematically recalibrated through repeated friction with discordant sensory data.

Furthermore, Uznadze’s insights resonate profoundly with contemporary Embodied and Enactive Cognition (the “4E Cognition” movement: Embodied, Embedded, Enacted, Extended). Thinkers like Francisco Varela, Evan Thompson, and Alva Noë have forcefully argued that the mind is not a disembodied software program running on neural hardware, but an enactive process rooted in the whole living organism dynamically interacting with its ecological niche. This is precisely Uznadze’s psychophysical monism: his radical insistence that mind emerges only at the active intersection of an internal somatic Need and an Objective Situation.

Similarly, Uznadze’s theory of Objectification directly anticipates contemporary Dual-Process Theories of Cognition (such as Daniel Kahneman’s “System 1” versus “System 2”) and modern theories of metacognition. Uznadze’s “Primary Plane” of pre-conscious, fluid, set-driven behavior functions as a structural equivalent to the fast, automatic, intuitive System 1; while his “Secondary Plane” of conscious objectification matches the slow, deliberative, effortful System 2. Yet Uznadze’s formulation remains theoretically superior in its evolutionary elegance: he clearly identified the exact mechanism that triggers the shift from System 1 to System 2—namely, the structural rupture, failure, and cognitive arrest of set-driven action that compels the mind to objectify reality.

12.3 Historical Significance in the Canon of Global Psychology

In the final assessment, Dmitriy Nikolaevich Uznadze must be recognized as one of the true foundational giants of global psychological science, deserving of a place alongside his celebrated contemporaries: Lev Vygotsky, Alexander Luria, Jean Piaget, and Kurt Lewin. Among these historical figures, Uznadze was unique in his uncompromising ability to formulate a totally autonomous, non-reductionist paradigm that was simultaneously philosophically profound and experimentally bulletproof.

Where Western psychology fractured into warring, one-sided tribes—introspective structuralists who abandoned the body, behaviorists who murdered the mind, and psychoanalysts who traded experimental rigor for mythological narratives—Uznadze achieved an intellectual synthesis that honored the full, multifaceted reality of the human person. He demonstrated that psychology could be a rigorous natural science without reducing the human subject to an unthinking machine, and that it could honor human teleology, culture, and conscious will without slipping into mystical idealism.

His life stands as a testament to the power of intellectual integrity in the face of brutal political tyranny. Working under the shadow of one of history’s most repressive totalitarian regimes, Uznadze refused to compromise the truth of his science. Through sheer intellectual brilliance, institutional courage, and experimental precision, he carved out a sanctuary of free, rigorous scientific inquiry in the South Caucasus, bequeathing to humanity an enduring theoretical monument. As modern cognitive science continues to dismantle the Cartesian dualisms of the past and struggle toward a truly integrated, embodied, and predictive model of the mind, the towering figure of Dmitriy Uznadze stands as a radiant beacon, illuminating the path forward for twenty-first-century psychology.

Conclusion

Dmitriy Nikolaevich Uznadze remains an enduring monument to scientific courage, philosophical profundity, and experimental genius. From his early rebellious youth in Kutaisi to the world-renowned laboratories of Leipzig and Halle, and finally to the institutional leadership of Tbilisi State University and the Georgian Academy of Sciences, Uznadze dedicated his life to solving the deepest riddle of human existence: the relationship between the objective world and the subjective mind. By exposing the fatal fallacy of the “postulate of immediacy” and erecting the comprehensive architecture of the Theory of Set, he forever altered the trajectory of psychological thought.

Uznadze demonstrated with mathematical precision that human beings do not passively reflect an external reality, nor are they the helpless puppets of mechanical environmental stimuli or dark, repressed unconscious drives. We are active, teleological, and unified psychophysical organisms whose every perception, thought, and voluntary deed is anchored in a pre-reflective readiness born of our vital needs and our ecological situatedness. When that readiness is challenged by an unpredictable universe, we rise to the heights of human dignity through the act of objectification, transforming the obstacles of life into the glorious achievements of conscious thought, science, and cultural creation. As contemporary cognitive science and philosophy of mind continue to rediscover the profound truths of embodied, enactive, and predictive cognition, Dmitriy Uznadze’s intellectual legacy shines with an undiminished, timeless brilliance, cementing his eternal place within the global pantheon of scientific pioneers.

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