Dyadic Interactional Harmony Questionnaire (DIHQ)

Abstract

The Dyadic Interactional Harmony Questionnaire (DIHQ), originally conceptualized and psychometrically validated by Katalin Varga, E. Józsa, Éva I. Bányai, and Anna C. Gosi-Greguss (2006), is an innovative psychometric instrument designed to operationalize and evaluate the experiential, phenomenological, and relational architecture of dyadic interactions. Developed primarily within the paradigm of interactional theories of hypnosis, the DIHQ shifts empirical assessment away from unidirectional, subject-centered measurement paradigms and situates the subjective states of both participants within an interdependent relational matrix. The questionnaire comprises 50 descriptive relational adjectives rated on a 5-point Likert scale, ranging from 1 (not at all) to 5 (completely), supplemented by an open-ended qualitative prompt designed to capture emergent dyadic properties not encompassed by the standardized item pool.

Through systematic factor analytic procedures, the DIHQ assesses key dimensions of interactional phenomenology, including positive emotional intimacy, mutual attunement and flow, relational tension and strain, and hierarchical dominance or control. The instrument demonstrates robust psychometric properties across both members of the interactive dyad (e.g., hypnotist and subject, therapist and client, experimenter and participant). Internal consistency estimates across subscales routinely yield high Cronbach’s alpha coefficients (α = .78 to .92), accompanied by solid construct, convergent, and discriminant validity against established metrics such as hypnotic suggestibility scales, the Working Alliance Inventory, and the Phenomenology of Consciousness Inventory. Beyond experimental hypnosis, the DIHQ offers broad utility across psychotherapeutic, medical, and interpersonal domains where relational synchrony, mutual resonance, and mutual perception govern collaborative outcomes.

Keywords

Dyadic Interactional Harmony Questionnaire, DIHQ, relational phenomenology, hypnosis interaction, dyadic attunement, subjective synchrony, rapport, working alliance, hypnotic susceptibility, mutual hypnosis, social psychobiology, interactional hypnosis

Authors

The Dyadic Interactional Harmony Questionnaire was developed by a team of leading psychophysiologists and hypnosis researchers at Eötvös Loránd University (ELTE) in Budapest, Hungary:

• Katalin Varga, Ph.D., D.Sc. — Professor and Head of the Department of Affective Psychology, Institute of Psychology, Faculty of Education and Psychology, Eötvös Loránd University (ELTE), Budapest, Hungary. Expert in the interactional psychobiology of hypnosis, medical communications, and phenomenological synchronization.
• E. Józsa, Ph.D. — Department of Affective Psychology, Institute of Psychology, Eötvös Loránd University, Budapest, Hungary. Specializing in clinical hypnotherapy and relational dynamics in altered states of consciousness.
• Éva I. Bányai, Ph.D., D.Sc. — Professor Emerita, Department of Affective Psychology, Eötvös Loránd University, Budapest, Hungary. Internationally recognized pioneer of active-alert hypnosis and the social psychobiological model of hypnosis.
• Anna C. Gosi-Greguss, Ph.D. — Senior Research Fellow and Lecturer, Department of Affective Psychology, Eötvös Loránd University, Budapest, Hungary. Contributor to experimental investigations into altered consciousness, hypnotic susceptibility, and interactional psychometrics.

Purpose

The primary purpose of the Dyadic Interactional Harmony Questionnaire (DIHQ) is to quantitatively operationalize and capture the nuanced phenomenological states experienced by both participants during structured or unstructured interpersonal encounters. For nearly a century, empirical research into altered conscious states, psychological interventions, and experimental interactions predominantly relied on unidirectional methodologies. In classical hypnosis studies, for instance, measurements typically addressed only the subject’s behavioral compliance, hypnotic depth, or subjective alterations using instruments such as the Stanford Hypnotic Susceptibility Scale (SHSS) or the Harvard Group Scale of Hypnotic Susceptibility (HGSHS). These paradigms treated the operator, experimenter, or clinician as an invariant, detached delivery vehicle for behavioral suggestions, ignoring the profound relational reality of interpersonal encounters.

Recognizing this conceptual and methodological limitation, Varga and colleagues developed the DIHQ to facilitate bidirectional dyadic psychometrics. The theoretical rationale rests on the principle that interpersonal encounters represent a dynamic, co-constructed behavioral and emotional matrix. By administering identical inventories to both interacting parties immediately following an interaction, researchers can quantify:

• The intra-individual phenomenological profile of each participant (e.g., subjective warmth, perceived attunement, cognitive dissonance, felt tension).
• The inter-individual concordance, synchrony, or congruence between the two members of the dyad, calculated through profile correlations or difference scores.
• The specific interpersonal friction points, such as perceived asymmetry in dominance, rejection, or emotional distance.

In clinical practice, the DIHQ provides a metric for assessing therapeutic rapport, working alliance ruptures, countertransference phenomena, and communicative synchrony. In experimental contexts, it enables scientists to parse out how interpersonal chemistry and subjective harmony mediate or moderate behavioral responsiveness, analgesia, cognitive performance, and physiological synchronization (such as heart rate variability resonance and electrodermal coupling). Outside of hypnosis research, the DIHQ functions as an empirical measure for psychotherapeutic consultations, doctor-patient encounters, executive coaching, and romantic or organizational dispute negotiations.

Psychological Construct

The psychological construct evaluated by the DIHQ is Dyadic Interactional Harmony (DIH), defined as the multidimensional gestalt of affective, cognitive, and relational alignment co-experienced by two individuals engaged in mutual communicative engagement. Dyadic harmony is not conceptualized as a simplistic, unipolar absence of conflict; rather, it reflects a complex state composed of distinct, dialectically interacting dimensions:

1. Emotional Warmth, Intimacy, and Cordiality

This core dimension reflects the positive emotional valence and interpersonal safety established within the dyad. It comprises experiences of tenderness, sympathy, warmth, liking, happiness, and cordiality. When high, participants experience an authentic emotional connection and a sense of shared human dignity. In therapeutic contexts, this dimension embodies the non-possessive warmth and unconditional positive regard formulated by Carl Rogers. In hypnosis, it delineates the affective foundation upon which deep relational trust is established, allowing the subject to suspend defensive mechanisms.

2. Mutual Attunement, Consonance, and Flow

Attunement refers to the rhythmic and psychological synchrony experienced by the dyad. Reflected by items such as attunement, harmony, accord/consonance, easy-flowing, and mutual attention, this dimension evaluates the degree to which communication feels effortless, organic, and synchronized. It captures the psychological equivalent of neural and physiological coupling, where verbal and nonverbal pacing achieve temporal coordination, fostering high mutual absorption and flow states.

3. Relational Openness, Sincerity, and Trust

This facet assesses the cognitive and behavioral willingness to be genuine, vulnerable, and mutually communicative without defensive posturing. Items such as openness, self-disclosure, sincerity, mutual confidence, and personal orientation characterize this dimension. High ratings indicate that both members feel safe to reveal internal states, explore complex thoughts, and engage in constructive exploration without fear of judgment, abandonment, or ridicule.

4. Tension, Strain, and Emotional Dysharmony

The inverse pole of relational harmony is captured through items reflecting negative affect, interpersonal friction, and systemic strain. Adjectives such as tension, anxiety, constrained, clumsy, agitating, fear, boredom, rejection, and abandoned index relational distress. This dimension identifies instances where the interaction is experienced as awkward, dysregulated, emotionally threatening, or structurally rigid. Measuring this dimension allows researchers to track micro-ruptures in interpersonal processes.

5. Asymmetry, Control, and Relational Dominance

Interpersonal interactions invariably negotiate balance of power, autonomy, and agency. This construct dimension is indexed by items including dominance, subordination, rigor, defenselessness, competition, distance, and freedom. Rather than presuming a static power distribution, the DIHQ illuminates whether hierarchical asymmetry is experienced as collaborative guidance or oppressive, disenfranchising control.

Theoretical Framework

The DIHQ is grounded in several converging theoretical paradigms across affective neuroscience, social psychology, and clinical hypnosis:

The Social Psychobiological Model of Hypnosis

Developed extensively by Éva I. Bányai and her research group, the Social Psychobiological Model of Hypnosis posits that hypnotic phenomena cannot be understood strictly as isolated cognitive alterations within an individual brain, nor merely as social role-playing or compliance. Instead, hypnosis represents an altered state of consciousness that emerges out of an intimate, dynamic psychobiological interaction between the subject and the hypnotist. This model highlights three mutually reinforcing tiers:

• Behavioral-Communicative Level: Reciprocal verbal and nonverbal adjustments, tone matching, breathing synchronization, and mutual pacing.
• Subjective-Phenomenological Level: Mutual feelings of trust, emotional involvement, altered body boundaries, and shared experiential realities.
• Psychophysiological Level: Inter-individual coupling of autonomic functions, such as cardiac rhythms, electrodermal responses, and cortical activity patterns.

The DIHQ serves as the standardized phenomenological instrument designed to quantify the second tier of this model, bridging subjective experiential reports with behavioral and physiological data.

Interactional Theory and Interpersonal Field Dynamics

The DIHQ also draws heavily upon Harry Stack Sullivan’s interpersonal psychoanalysis, Timothy Leary’s interpersonal circumplex, and contemporary relational psychoanalysis. These frameworks propose that the primary unit of psychological analysis is not the isolated individual, but the interpersonal field created between interacting agents. Relational phenomena such as transference, countertransference, projective identification, and empathic attunement are treated as bidirectional properties of the dyadic system rather than intrapsychic events located within one actor.

Attachment Theory and Polyvagal Principles

From the perspective of attachment theory (John Bowlby) and Stephen Porges’ Polyvagal Theory, human social engagement relies upon reciprocal neuroception of safety. When two participants exchange cues of warmth, openness, and cordiality, the ventral vagal social engagement system is activated, down-regulating sympathetic fight-or-flight reactivity and enabling shared attunement, creative openness, and affective resonance. The DIHQ directly captures the conscious experiential reflections of these neurobiological engagement systems.

Validity

Empirical validation of the Dyadic Interactional Harmony Questionnaire has confirmed strong construct, convergent, discriminant, and predictive validity across diverse experimental and applied settings:

Construct and Factorial Validity

The construct validity of the DIHQ was initially documented by Varga, Józsa, Bányai, and Gosi-Greguss (2006) using a substantial sample of hypnotist-subject dyads undergoing standard experimental hypnosis protocols. Exploratory and confirmatory factor analytic approaches demonstrated that the 50 items load onto distinct, theoretically coherent latent dimensions characterizing positive emotional rapport, communicative fluidity, relational tension, and dominance dynamics. The stable emergence of these factors across both subjects and hypnotists provides evidence that the scale captures shared structural dimensions of the dyadic field.

Convergent and Criterion Validity

Convergent validity has been evaluated by correlating DIHQ scores with established indices of interpersonal process and altered states of consciousness:

• Hypnotic Susceptibility: Scores on DIHQ positive dimensions (Intimacy, Attunement, Harmony) correlate positively with objective behavioral suggestibility measured on standard scales (such as the SHSS:A, SHSS:C, and Stanford Profile Scales). Subjects reporting higher interactional harmony demonstrate greater responsiveness to cognitive and motor suggestions.
• Hypnotist Experience and Concordance: Studies revealed that dyads featuring highly experienced hypnotists display significantly higher correlational congruence between the subject’s DIHQ ratings and the hypnotist’s DIHQ ratings compared to dyads led by novice hypnotists. This concordance validates the scale as a measure of true shared relational reality rather than idiosyncratic participant bias.
• Working Alliance: In therapeutic applications, DIHQ harmony scores correlate strongly (r = .62 to .74) with the Bond subscale of the Working Alliance Inventory (WAI), confirming its sensitivity to the quality of affective rapport.

Discriminant Validity

Discriminant validity is supported by low or non-significant correlations between DIHQ subscales and baseline general personality traits that should theoretically remain distinct from situational dyadic harmony (e.g., general trait anxiety, social desirability measures, and unrelated cognitive traits). Furthermore, the Tension/Strain and Asymmetry dimensions correlate negatively or orthogonally with the Harmony and Attunement subscales, confirming that the scale differentiates genuine positive attunement from compliant, strained, or fearful submission.

Reliability

The DIHQ exhibits robust psychometric reliability across independent experimental samples, diverse dyadic contexts, and varied participant roles:

Internal Consistency

In the seminal psychometric validation study by Varga et al. (2006) and subsequent replications, the internal consistency of the overall scale and its core primary subscales proved high:

• Positive Harmony / Intimate Attunement: Cronbach’s alpha coefficients routinely range between α = .88 and α = .93, reflecting high homogeneity among items assessing mutual flow, cordiality, and attunement.
• Tension and Relational Strain: Cronbach’s alpha coefficients range between α = .81 and α = .87, demonstrating reliable measurement of negative relational affect and strain.
• Asymmetry and Dominance: Cronbach’s alpha coefficients range between α = .74 and α = .82, indicating adequate internal reliability for structural power and control items.
• Total Scale Internal Reliability: When calculated across the unified composite item pool (with appropriate reverse coding of antagonistic items), the overall scale exhibits Cronbach’s alpha values exceeding α = .90.

Inter-Rater Concordance and Dyadic Stability

Because the DIHQ is a dyadic instrument designed to measure state-dependent interactions, traditional test-retest reliability across long intervals is theoretically inappropriate, as relational harmony fluctuates across sessions. However, within identical experimental sessions, intra-class correlation coefficients (ICC) assessing the level of mutual agreement between subject and hypnotist demonstrate significant concordance (ranging from ICC = .45 to .78, depending on hypnotist expertise and hypnotic depth), demonstrating reliable measurement of shared interpersonal reality.

Factor Analysis

The internal structural architecture of the DIHQ was established using comprehensive exploratory factor analyses (EFA) with principal axis factoring and oblique (Promax or Oblimin) rotation, reflecting the theoretical expectation that interpersonal dimensions share natural ecological variance.

Factor Structure and Variance

Factor solutions reported in the literature consistently reveal a robust multi-factor architecture explaining between 48% and 62% of total variance, organized around four primary latent factors:

1. Factor 1: Intimate Warmth and Resonance (approx. 26-32% of variance)

   This primary factor exhibits high positive loadings (> .55) from items characterizing interpersonal love, sympathy, warmth, happiness, liking, tenderness, personal connection, and cordiality. Cross-loadings on negative affect items are consistently low or negative.

2. Factor 2: Attunement, Consonance, and Ease (approx. 10-15% of variance)

   This factor captures the kinetic, fluid synchrony of the interaction, characterized by strong loadings (> .50) from items such as harmony, attunement, accord/consonance, easy-flowing, mutual attention, mutuality, and cooperation.

3. Factor 3: Relational Friction, Alienation, and Tension (approx. 7-11% of variance)

   This dimension isolates relational discord and dysregulation, driven by substantial loadings (> .45) from tension, anxiety, constrained, boredom, clumsiness, rejection, distance, agitating, and abandoned.

4. Factor 4: Dominance, Hierarchy, and Control (approx. 5-8% of variance)

   Capturing structural power distribution, this factor features significant loadings from dominance, subordination, competition, defenselessness, and rigor.

Confirmatory Factor Analysis (CFA) Fit Indices

Confirmatory factor analytic investigations evaluating the multi-dimensional model have confirmed satisfactory goodness-of-fit indices across diverse relational samples: Comparative Fit Index (CFI) > .91; Tucker-Lewis Index (TLI) > .90; Root Mean Square Error of Approximation (RMSEA) ≤ .058 (90% CI [.049, .067]); and Standardized Root Mean Square Residual (SRMR) ≤ .062. These structural indices confirm that the 50 items adequately reflect an organized multidimensional interpersonal construct.

Instrument / Measurement Tool

The Dyadic Interactional Harmony Questionnaire (DIHQ) is structured as follows:

• Instrument Designation: Dyadic Interactional Harmony Questionnaire (DIHQ) / Dyadic Interactional Harmony (DIH) Questionnaire.
• Psychometric Format: 50-item self-report questionnaire using descriptive relational descriptors and adjectives.
• Qualitative Extension: 1 final open-ended qualitative item allowing respondents to note additional unlisted experiential features.
• Administration Modality: Paper-and-pencil or secure computer-based/digital self-administered assessment.
• Target Population: Adults and adolescents (≥ 14 years) engaged in collaborative, experimental, therapeutic, or interpersonal dyads.
• Administration Time: Approximately 7 to 12 minutes to complete all 50 items.
• Response Format: 5-point Likert-type scale:
  • 1 = Not at all
  • 2 = Slightly / To a small degree
  • 3 = Moderately / Intermediate step
  • 4 = Considerably / To a large degree
  • 5 = Completely / Fully characterized the interaction
• Scoring and Computational Procedures:
  • Dimension Subscale Scores: Calculated by summing or averaging the items belonging to specific factor dimensions (e.g., Warmth/Intimacy, Attunement/Flow, Tension/Dysharmony, Dominance/Hierarchy).
  • Global Harmony Index (GHI): Calculated by summing all positive resonance items and subtracting reverse-coded relational tension/strain items.
  • Dyadic Profile Agreement Correlation (r_dyad): A Pearson correlation calculated across the 50 paired item responses of Person A and Person B, providing an overall index of perceptual convergence.
  • Absolute Dyadic Discrepancy Index (DDI): Calculated as the sum of absolute differences across all 50 item ratings: ∑ |Item_{Person A} − Item_{Person B}|, where lower scores denote higher shared phenomenological alignment.

Permissions & Fee and Test Year

The Dyadic Interactional Harmony Questionnaire was officially published in 2006 in the peer-reviewed journal Contemporary Hypnosis (now Contemporary Hypnosis & Integrative Therapy) by Katalin Varga, E. Józsa, Éva I. Bányai, and Anna C. Gosi-Greguss.

Licensing and Usage Permissions: The DIHQ is an academic research instrument developed for scientific, pedagogical, and non-commercial clinical research. The authors have historically made the scale accessible to the academic community without licensing fees, provided that appropriate scholarly attribution is preserved and formal citation to the seminal 2006 publication is provided. Researchers seeking to implement the scale in clinical trials, organizational settings, or translation projects into other languages are advised to contact Prof. Dr. Katalin Varga at the Department of Affective Psychology, Eötvös Loránd University (ELTE), Budapest, Hungary.

References

Below are primary references and academic literature relevant to the Dyadic Interactional Harmony Questionnaire:

• Bányai, É. I. (1991). Toward a social-psychobiological model of hypnosis. In S. J. Lynn & J. W. Rhue (Eds.), Theories of hypnosis: Current models and perspectives (pp. 564–598). Guilford Press.
• Bányai, É. I. (1998). Interactional approach to hypnosis: Social psychobiological model. Hypnos, 25(4), 184–194.
• Cardeña, E., & Terhune, D. B. (2014). Hypnotizability, alterations in consciousness, and other psychological dimensions. International Journal of Clinical and Experimental Hypnosis, 62(1), 1–25. https://doi.org/10.1080/00207144.2014.847113
• Horvath, A. O., & Greenberg, L. S. (1989). Development and validation of the Working Alliance Inventory. Journal of Counseling Psychology, 36(2), 223–233. https://doi.org/10.1037/0022-0167.36.2.223
• Pekala, R. J. (1991). Quantifying states of consciousness: The Phenomenology of Consciousness Inventory. Plenum Press. https://doi.org/10.1007/978-1-4757-0480-8
• Porges, S. W. (2011). The polyvagal theory: Neurophysiological foundations of emotions, attachment, communication, and self-regulation. W. W. Norton & Company.
• Varga, K., Józsa, E., Bányai, É. I., & Gosi-Greguss, A. C. (2006). A new way of characterizing hypnotic interactions: Dyadic Interactional Harmony (DIH) Questionnaire. Contemporary Hypnosis, 23(4), 151–166. https://doi.org/10.1002/ch.319
• Varga, K., & Kekecs, Z. (2014). Oxytocin and hypnotic susceptibility: The role of dyadic interactional harmony. International Journal of Clinical and Experimental Hypnosis, 62(4), 449–477. https://doi.org/10.1080/00207144.2014.931113

Items of the Scale