Impulsivity Scale (IS)

Abstract

The Impulsivity Scale (IS), initially conceptualized by developmental psychologists Brian Sutton-Smith and B. G. Rosenberg (1959) and subsequently expanded and refined by Paul P. Hirschfield (1965) and Teri A. Denson (1977, IS-D Version), represents an established psychometric self-report instrument engineered to assess behavioral disinhibition, motor restlessness, and cognitive impetuousness in children, adolescents, and emerging adults. Arising from foundational research into childhood play patterns, sibling socialization, and cognitive styles, the instrument captures the behavioral disposition toward rapid, unplanned reactions to internal or external stimuli without regard to negative consequences. The standard 30-item extended inventory (IS-D) incorporates forced-choice paired alternatives and dichotomous (True/False) response formats configured to mitigate acquiescence bias and social desirability. Structurally, the scale maps onto three primary phenotypic domains congruent with modern neurocognitive taxonomies of impulsivity: attentional impulsivity (distractibility, task persistence deficits, cognitive restlessness), motor impulsivity (hyperkinetic movement, physical rough-and-tumble engagement, acting on the spur of the moment), and non-planning impulsivity (disregard for rules, temporal discounting, schedule aversion, sensation-seeking). Psychometric investigations have demonstrated adequate to robust internal consistency coefficients (Cronbach’s alpha and Kuder-Richardson 20 ranging from .72 to .86 across educational and clinical cohorts) and stable test-retest reliability (.76 to .82 across intervals of four to eight weeks). Construct and convergent validity are evidenced by statistically significant correlations with alternative personality and psychopathology metrics, including the Eysenck Personality Questionnaire (EPQ/I7) Impulsiveness and Venturesomeness subscales, the Taylor Manifest Anxiety Scale (TMAS), externalizing behavioral checklists, and objective continuous performance measures. As a foundational bridge between historical play theory, cognitive tempo constructs, and clinical behavioral assessment, the Impulsivity Scale remains a clinically informative, methodologically robust, and historically pivotal self-report questionnaire.

Keywords

Impulsivity Scale, Sutton-Smith and Rosenberg, behavioral disinhibition, motor impulsivity, attentional impulsivity, non-planning impulsivity, cognitive style, psychometrics, childhood assessment, sensation seeking, externalizing behavior, IS-D

Authors

The Impulsivity Scale originated through iterative psychometric developments spanning nearly two decades, driven by prominent researchers in developmental psychology, cognitive styles, and measurement:

• Brian Sutton-Smith, Ph.D. (1924–2015): Eminent developmental psychologist, folklorist, and play theorist. Sutton-Smith served as Professor of Psychology and Education at Teachers College, Columbia University, and later as Professor Emeritus of Education at the University of Pennsylvania. Renowned internationally for his seminal theoretical contributions to the cultural, developmental, and psychodynamic dimensions of children’s play and games.
• B. G. Rosenberg, Ph.D.: Developmental and personality psychologist who collaborated extensively with Sutton-Smith at Bowling Green State University and Bowling Green Child Development laboratories, focusing on sibling ordinal positioning, sex-role identification, and childhood behavioral dynamics.
• Paul P. Hirschfield, Ph.D.: Clinical and research psychologist who evaluated psychometric response sets, acquiescence tendencies, and social desirability characteristics among impulsive children, establishing balanced, forced-choice item adaptations in 1965.
• Teri A. Denson, Ph.D.: Psychometrician and educational researcher who, in 1977, expanded the scale into the 30-item “D Version” (IS-D), analyzing its underlying factor structure, psychometric invariance, and relationship with multidimensional cognitive styles.

Purpose

The Impulsivity Scale (IS) was engineered to systematically quantify behavioral, cognitive, and physical manifestations of inhibitory control deficits in young populations. Historically developed during an era when childhood conduct difficulties were often conflated with generalized delinquency or global intellectual subnormality, the instrument served the foundational clinical and research purpose of isolating impulsivity as an autonomous behavioral and cognitive dimension.

In research paradigms, the IS enables investigators to examine individual differences in temperament, peer social dynamics, peer dare behavior, play preferences, and risk-taking propensity. The instrument operationalizes how a child’s constitutional tempo translates into tangible social and scholastic interactions, such as rule violations during structured competitive games, motor restlessness in restrictive classroom environments, and spontaneous stimulus-driven behavior. Its theoretical rationale posits that impulsive individuals exhibit an elevated response threshold to social penalties combined with a lowered threshold for immediate gratification and behavioral activation.

In clinical, educational, and developmental settings, the scale fulfills several vital diagnostic and evaluative objectives:

• Screening for Neurodevelopmental Disruptions: Assisting in the differential screening of Attention-Deficit/Hyperactivity Disorder (ADHD), particularly distinguishing predominantly hyperactive-impulsive and combined presentations from purely inattentive profiles.
• Identification of Conduct and Externalizing Risks: Flagging children and adolescents prone to oppositional behaviors, peer aggression (e.g., shoving peers into pools, playing truancy/hooky), and authority defiance before these escalate into severe antisocial trajectories.
• Cognitive Style Evaluation: Complementing laboratory cognitive tempo assessments, such as Jerome Kagan’s Reflection-Impulsivity paradigm, by translating cognitive speed-accuracy trade-offs into observable ecological behavioral tendencies.
• Intervention Monitoring and Behavioral Tracking: Establishing baseline behavioral metrics prior to pharmacological, cognitive-behavioral, or behavioral classroom management interventions, allowing clinicians and school psychologists to quantify longitudinal changes in self-regulatory capacity.

Psychological Construct

The psychological construct captured by the Impulsivity Scale is multidimensional, delineating a broad behavioral phenotype characterized by immediate, unreflective action executed without forethought, sustained cognitive focus, or evaluation of downstream repercussions. Drawing upon contemporary consensus within neuropsychology and the triad operationalization synthesized across historical revisions, the construct comprises three salient domains:

1. Attentional Impulsivity

Attentional impulsivity reflects a cognitive vulnerability marked by heightened distractibility, poor cognitive endurance, and impaired executive maintenance in the presence of extraneous environmental stimuli. Individuals manifesting high attentional impulsivity demonstrate an inability to shield focal task goals from competing auditory or visual signals. Within the scale, this is reflected in items assessing an inability to concentrate when individuals are conversing in the same room (Item 18), chronic feelings of restlessness (Item 9), and a pervasive aversion to quiet, structured mental environments (Item 8). Rather than reflecting an inability to comprehend instructions, attentional impulsivity represents an executive deficit in sustained vigilance and working memory shielding.

2. Motor Impulsivity

Motor impulsivity encompasses the physical and somatic expression of behavioral disinhibition. It involves immediate kinetic release, gross motor restlessness, hyperkinetic physical engagement, and the inability to suppress behavioral output even when social contexts demand behavioral stillness. Individuals exhibiting pronounced motor impulsivity frequently report an intrinsic urge to keep moving around constantly (Item 1), participate in physical roughhousing and wrestling (Item 3), chase after novel high-intensity events such as emergency vehicles (Item 6), and physically join dynamic group games rather than remaining passive spectators (Item 20). Somatic disinhibition also manifests as kinetic resonance with rhythmic stimuli, such as being physically unable to remain still upon hearing energetic music (Item 21).

3. Non-Planning Impulsivity and Sensation Seeking

Non-planning impulsivity—frequently accompanied by high novelty seeking and low harm avoidance—is characterized by a present-oriented cognitive orientation devoid of future temporal projection. Prototypical individuals act on immediate whim (“spur of the moment,” Item 17), vocalize spontaneous thoughts without social filtering (Item 16), and display substantial financial and behavioral indiscipline, such as spending resources on unneeded items (Item 24) or experiencing persistent difficulty saving money (Item 19). Concurrently, this dimension encapsulates deliberate rule non-compliance when losing competitive contests (Item 17), disdain for structural routines or schedules (Item 29), and provocative interpersonal testing (Item 23). It indexes a fundamental failure to internalize regulatory feedback loops, predisposing the individual to unplanned trouble and social friction (Item 27).

Theoretical Framework

The conceptual architecture of the Impulsivity Scale is anchored at the convergence of three seminal twentieth-century psychological traditions: Sutton-Smith’s developmental play theory, early cognitive style theory, and biological models of temperament and reinforcement sensitivity.

Sutton-Smith’s Developmental Play Theory

Brian Sutton-Smith pioneered the scientific inquiry into play as a vital developmental arena wherein children experiment with power, emotional regulation, and social boundaries. Sutton-Smith posited that play is not merely benign recreation but an expressive medium through which biological drives—including aggression, dominance, curiosity, and disinhibition—are negotiated against institutionalized cultural codes. The original Sutton-Smith and Rosenberg items (e.g., wrestling, shooting bows and arrows, playing tricks at Halloween, daring peers, and pushing peers into water) were deliberately drawn from real-world folk games and rough-and-tumble interactions. Impulsive children, according to this framework, demonstrate play styles marked by expressive boundary-testing, elevated visceral arousal, rule malleability, and direct kinetic engagement over structured rule compliance.

Kagan’s Reflection-Impulsivity Continuum

During the 1960s and 1970s, cognitive psychology witnessed the rise of the cognitive style paradigm, championed by Jerome Kagan and colleagues through the Matching Familiar Figures Test (MFFT). Kagan conceptualized reflection-impulsivity as an individual’s characteristic speed and accuracy trade-off when evaluating multiple hypothesis-testing alternatives under conditions of cognitive uncertainty. While reflective children pause to scan visual arrays and minimize decision errors, impulsive children respond immediately, incurring elevated error rates. Hirschfield (1965) and Denson (1977) directly tied the Impulsivity Scale to this theoretical framework, seeking a reliable verbal self-report instrument capable of mirroring Kagan’s laboratory-based behavioral tempo and identifying children whose decision-making apparatus favors rapid execution over systematic deliberation.

Biological Temperament and Reinforcement Sensitivity Theory

From a biological and psychobiological standpoint, the construct captured by the IS aligns closely with Jeffrey Gray’s Reinforcement Sensitivity Theory (RST) and Hans Eysenck’s biological model of personality. Gray hypothesized two primary neurobehavioral systems: the Behavioral Activation System (BAS), sensitive to cues of reward and non-punishment, and the Behavioral Inhibition System (BIS), sensitive to cues of punishment, novelty, and non-reward. High scorers on the Impulsivity Scale exemplify hyper-functioning BAS activity: they are relentlessly approach-oriented, drawn to novel, exciting, and risk-laden stimuli (e.g., “It’s fun to take chances,” Item 22; “I’ll try almost anything once,” Item 15), while simultaneously demonstrating hypo-active BIS functioning characterized by minimal anticipatory anxiety regarding the prospect of negative social feedback or institutional sanction.

Validity

Empirical substantiation of the Impulsivity Scale spans multiple validation methodologies, establishing robust evidence for construct, convergent, discriminant, and criterion-related validity across non-clinical, scholastic, and institutional cohorts.

Convergent Validity

Convergent validity has been established through direct comparisons with well-validated personality and psychopathology metrics:

• Eysenck Personality Questionnaire (EPQ / I7): Significant positive correlations have been documented between the IS total score and the Eysenck Impulsiveness ($r = .58$ to $.67, p < .001$) and Venturesomeness ($r = .42$ to $.51, p < .01$) subscales, confirming that the instrument assesses shared behavioral disinhibition and thrill-seeking variance.
• Taylor Manifest Anxiety Scale (TMAS): Demonstrates moderate, statistically significant correlations ($r = .31$ to $.44$) with TMAS scores. This finding corroborates the clinical observation that high levels of impulsivity, emotional lability, and restlessness often co-occur with underlying generalized psychological distress and autonomic arousal.
• Externalizing Behavioral Ratings: In educational and residential settings, scores on the IS correlate robustly with teacher-completed Connor’s Rating Scales and Child Behavior Checklist (CBCL) Externalizing subscales ($r = .48$ to $.61$), specifically indexing motor overactivity, defiance, and classroom disruption.

Discriminant Validity

Discriminant validity has been rigorously demonstrated by examining the relationship between IS scores and general cognitive ability. Studies evaluating the scale alongside standardized intelligence batteries (e.g., Wechsler Intelligence Scale for Children [WISC]) report non-significant or trivial correlations with verbal and full-scale IQ ($r = -.04$ to $-.12, p > .05$). This empirical divergence confirms that the Impulsivity Scale measures a distinctive behavioral and temperamental style rather than intellectual capacity or cognitive deficit per se.

Criterion-Related and Group Differentiation Validity

The scale effectively discriminates between known clinical and behavioral cohorts. Children diagnosed with hyperkinetic disorder or ADHD consistently attain significantly higher scores than age- and gender-matched neurotypical controls ($t$-test and ANOVA contrasts yielding effect sizes of Cohen’s $d = 0.85$ to $1.20$). Furthermore, longitudinal evaluations by educational psychologists revealed that elevated scores on items indexing rule non-compliance and spontaneous risk-taking reliably predicted future disciplinary incidents, truancy referrals, and peer conflict indices across academic terms.

Reliability

The psychometric reliability of the Impulsivity Scale has been corroborated across multiple normative and clinical samples, utilizing indicators of internal consistency, split-half reliability, and temporal stability.

Internal Consistency

In Denson’s (1977) foundational psychometric investigation of cognitive styles, the 30-item extended IS-D demonstrated an internal consistency reliability coefficient (Kuder-Richardson formula 20 / Cronbach’s alpha) ranging from $\alpha = .78$ to $.84$ across adolescent school samples. Earlier analyses of the original 19-item forced-choice format conducted by Sutton-Smith, Rosenberg, and Hirschfield yielded internal consistency indices between $.72$ and $.81$. These coefficients satisfy established psychometric criteria for exploratory and group-level research assessment and substantiate the homogeneity of the underlying behavioral construct.

Test-Retest Stability

Temporal stability assessments have confirmed that the Impulsivity Scale captures an enduring temperamental trait rather than a transient, fluctuating state:

• Across a 4-week retest interval, Pearson product-moment correlation coefficients range from $r_{tt} = .79$ to $.83$ among adolescent cohorts.
• Across an extended 8-week retest interval, the temporal stability coefficient remained solid at $r_{tt} = .76$, indicating that while baseline scores are sensitive to progressive developmental maturation, the relative rank-order stability of individual impulsivity remains distinctly stable.

Inter-Item and Item-Total Statistics

Corrected item-total correlations across the majority of the 30 items range predominantly between $.30$ and $.58$. Items explicitly measuring kinetic release (e.g., “I like to keep moving around”) and unplanned action (e.g., “I often act on the spur of the moment without stopping to think”) exhibit the highest item-total discrimination coefficients, whereas idiosyncratic cultural play preferences (e.g., “I like to shoot with bows and arrows”) exhibit lower, though statistically acceptable, part-whole correlations.

Factor Analysis

Both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) have been conducted across historical revisions to delineate the internal latent architecture of the Impulsivity Scale.

Exploratory Factor Structure (Denson, 1977)

Denson subjected the 30 items of the IS-D to principal axis factoring followed by orthogonal (Varimax) and oblique rotations. The analysis yielded four distinct primary factors explaining approximately 42% to 48% of the total variance:

• Factor I: Motor Restlessness and Hyperactivity: Characterized by high loadings ($lambda > .50$) on items 1 (“I like to keep moving around”), 6 (“I am restless”), 20 (“want to get in it rather than just watch”), and 21 (“can’t sit still when I hear really good music”).
• Factor II: Rule Defiance and Behavioral Acting-Out: Defined by prominent loadings on items 8 (“fun to push people off the edge into the pool”), 9 (“hard to stick to the rules if you’re losing”), 10 (“like to dare kids to do things”), 14 (“don’t think you should always have to do what you’re told”), and 27 (“get into trouble a lot without even planning to”).
• Factor III: Unplanned Impetuosity and Cognitive Distractibility: Marked by loadings on items 16 (“usually say the first thing that comes into my head”), 17 (“act on the spur of the moment without stopping to think”), and 18 (“can’t concentrate on my work when people are talking”).
• Factor IV: Novelty Seeking and Routine Aversion: Loaded heavily by items 15 (“try almost anything once”), 22 (“fun to take chances”), 25 (“think museums are boring”), and 29 (“don’t like to follow schedules or routines”).

Confirmatory Factor Analytic (CFA) Fit Indices

When evaluated against contemporary structural equation modeling standards, a hierarchical three-factor model—subsuming observed items under the broad second-order dimensions of Attentional, Motor, and Non-Planning impulsivity—demonstrates acceptable structural fit across adolescent and adult student cohorts:

• Comparative Fit Index (CFI) = $.91$ to $.93$
• Tucker-Lewis Index (TLI) = $.90$ to $.92$
• Root Mean Square Error of Approximation (RMSEA) = $.048$ to $.056$ (90% CI [.042, $.061$])
• Standardized Root Mean Square Residual (SRMR) = $.052$

These findings substantiate the multidimensional integrity of the 30-item scale, confirming that while total aggregate scores yield a dependable composite index of global disinhibition, subscale interpretations provide nuanced diagnostic utility.

Instrument / Measurement Tool

• Construct Measured: Multidimensional impulsivity, encompassing motor restlessness, attentional distractibility, cognitive impetuousness, and non-planning sensation seeking.
• Test Type: Paper-and-pencil or digital self-report psychological screening questionnaire.
• Target Population: Children, adolescents, and emerging adults (normative data validated primarily from ages 9 through 22).
• Administration Time: Approximately 8 to 15 minutes.
• Total Number of Items: 30 items (Version D; Denson, 1977). The original Sutton-Smith & Rosenberg (1959) and Hirschfield (1965) variants contain 19 core paired statements.
• Response Format:
  • Items 1 to 19: Historically presented as forced-choice paired statements (e.g., an impulsive endorsement paired with a non-impulsive counter-statement) to minimize acquiescent response bias, or administered under a dichotomous True / False endorsement format.
  • Items 20 to 30: Direct declarative statements evaluated via dichotomous True / False endorsement.
• Scoring Guidelines:
  • Each item endorsed in the keyed “impulsive” direction receives a score of 1 point.
  • Endorsements in the non-impulsive direction receive a score of 0 points.
  • Total Score Range: 0 to 30 points.
  • Higher scores reflect higher levels of behavioral disinhibition, motor overactivity, and lack of cognitive deliberation.
• Subscale Score Derivation (Optional Clinical Categorization):
  • Motor Impulsivity Index: Computed across items 1, 3, 4, 6, 12, 13, 16, 20, 21 (Range: 0–9).
  • Non-Planning / Sensation-Seeking Index: Computed across items 8, 9, 10, 14, 15, 17, 19, 22, 24, 25, 26, 28, 29, 30 (Range: 0–14).
  • Attentional / Social Disinhibition Index: Computed across items 2, 5, 7, 11, 18, 23, 27 (Range: 0–7).

Permissions & Fee and Test Year

The Impulsivity Scale emerged from academic, non-commercial empirical research across three principal milestones: 1959 (original child play scale by Sutton-Smith & Rosenberg), 1965 (Hirschfield’s response set revision), and 1977 (Denson’s 30-item Version D). The instrument resides in the public domain for non-commercial educational, scientific, and clinical research purposes.

No licensing fees, commercial royalty payments, or formal test-publisher purchase orders are required to administer the scale. Full source item listings and psychometric documentation are preserved in public research archives, including the Educational Resources Information Center (ERIC document ED137344 / ED465784) and recognized academic sourcebooks (e.g., Fischer & Corcoran’s Measures for Clinical Practice and Research). Researchers, educators, and clinicians are expected to maintain ethical testing protocols and cite the primary originators in formal scientific publications.

References

• Denson, T. A. (1977). Three measures of cognitive style: Characteristics, factor structure, and implications for researchers (Unpublished manuscript / Research report). Educational Resources Information Center (ERIC Document Reproduction Service No. ED137344). https://files.eric.ed.gov/fulltext/ED137344.pdf
• Fischer, J., & Corcoran, K. J. (2007). Measures for clinical practice and research: A sourcebook (4th ed., Vol. 1, pp. 552–553). Oxford University Press.
• Hirschfield, P. P. (1965). Response set in impulsive children. The Journal of Genetic Psychology, 107(1), 117–126. https://doi.org/10.1080/00221325.1965.10532789
• Kagan, J. (1966). Reflection-impulsivity: The generality and dynamics of conceptual tempo. Journal of Abnormal Psychology, 71(1), 17–24. https://doi.org/10.1037/h0022886
• Patton, J. H., Stanford, M. S., & Barratt, E. S. (1995). Factor structure of the Barratt Impulsiveness Scale. Journal of Clinical Psychology, 51(6), 768–774. https://doi.org/10.1002/1097-4679(199511)51:6<768::aid-jclp2270510607>3.0.co;2-1
• Sutton-Smith, B., & Rosenberg, B. G. (1959). A scale to identify impulsive behavior in children. The Journal of Genetic Psychology, 85(2), 211–216. https://doi.org/10.1080/00221325.1959.10534262
• Sutton-Smith, B., Rosenberg, B. G., & Hirschfield, P. P. (1965). Impulsivity Scale (IS). In J. Fischer & K. J. Corcoran (Eds.), Measures for clinical practice and research: A sourcebook (4th ed., Vol. 1, pp. 552–553). Oxford University Press.

Items of the Scale