Nowicki Preschool and Primary Internal-External Control Scale

1. Abstract

The Nowicki Preschool and Primary Internal-External Control Scale (PPNSIE) is an extensively utilized psychometric assessment engineered to measure locus of control orientation in young children typically aged four to eight years (preschool through early primary grades). Developed by clinical psychologists Stephen Nowicki Jr. and Marshall P. Duke in 1974, the scale operationalizes Julian B. Rotter’s social learning theory for early developmental stages. Structurally, the instrument consists of 34 dichotomous (Yes/No) questions administered in an individualized, oral interview format to accommodate emerging literacy levels. The PPNSIE is designed to distinguish between an internal locus of control—the belief that one’s own efforts, choices, and behaviors dictate life outcomes—and an external locus of control—the generalized expectancy that events are governed by luck, chance, fate, or powerful others. Embedded within the full 34-item protocol are 26 core locus of control items, interspersed with 8 social desirability filler items adapted from early childhood Lie scales to detect response distortion and acquiescence. Psychometric investigations reveal split-half and test-retest reliability estimates ranging between .63 and .79 across cross-sectional age bands, reflecting appropriate developmental stability while capturing normative maturational shifts toward internality. Construct, convergent, and discriminant validity have been confirmed across decades of empirical inquiry, linking internal scores to advanced academic readiness, socio-emotional resilience, self-regulatory competence, and adaptive coping mechanisms in early childhood education and pediatric developmental settings.

2. Keywords

Nowicki Preschool and Primary Internal-External Control Scale, PPNSIE, Locus of Control, Social Learning Theory, Early Childhood Assessment, Stephen Nowicki, Marshall Duke, Generalized Expectancies, Internal Control, External Control, Child Psychometrics, Developmental Psychology, Self-Regulation, Primary Grade Assessment, Dichotomous Forced-Choice

3. Authors

The PPNSIE was conceptualized, operationalized, and psychometrically validated by:

• Stephen Nowicki, Jr., Ph.D.: Charles Howard Candler Professor Emeritus of Psychology at Emory University, Atlanta, Georgia, United States. Dr. Nowicki is an internationally distinguished clinical and developmental psychologist recognized for his pioneering longitudinal research on locus of control, child nonverbal communication, and social-emotional learning across the lifespan.
• Marshall P. Duke, Ph.D.: Charles Howard Candler Professor Emeritus of Psychology at Emory University, Atlanta, Georgia, United States. Dr. Duke has contributed seminal work in family narratives, child psychopathology, nonverbal social interactions, and developmental psychometrics, co-developing the comprehensive family of Nowicki-Strickland Internal-External scales.

Institutional affiliations during initial scale development: Department of Psychology, Emory University, Atlanta, Georgia 30322, USA.

4. Purpose

The primary purpose of the Nowicki Preschool and Primary Internal-External Control Scale (PPNSIE) is to provide a developmentally calibrated, objective, and standardized instrument to quantify generalized control expectancies in early childhood. Prior to the publication of the PPNSIE in 1974, the measurement of locus of control was largely restricted to older children, adolescents, and adults via instruments such as the Rotter Internal-External Control Scale, the Bialer-Cromwell Children’s Locus of Control Scale, and the Nowicki-Strickland Internal-External Control Scale for Children (CNSIE). Researchers lacked an instrument tailored to the cognitive, linguistic, and socio-emotional capacities of children aged four to seven who had not yet acquired independent reading comprehension and possessed nascent metacognitive abilities.

The developmental rationale of the PPNSIE stems from the recognition that generalized expectancies regarding reinforcement contingencies begin forming during the earliest social interactions. Preschoolers encounter socialization pressures, parent-child power dynamics, peer conflict, and early educational tasks that continuously signal whether outcomes depend on personal agency or external determinants. The PPNSIE captures these early generalized beliefs through developmentally concrete scenarios familiar to young children (e.g., getting sick, making friends, getting one’s way with parents, avoiding punishment, and physical competence).

In clinical and developmental contexts, the PPNSIE serves as an invaluable diagnostic and evaluative tool. Clinicians utilize the scale to evaluate children presenting with learned helplessness, behavioral inhibition, oppositional tendencies, or anxiety disorders. Children exhibiting an excessively external orientation often perceive their world as unpredictable, arbitrary, or overwhelmingly controlled by adults, which can manifest as passive resignation or aggressive acting-out. Conversely, tracking early locus of control enables educators and pediatric interventionists to evaluate whether structured classroom environments, behavioral therapies, or parent-training programs effectively nurture agency, problem-solving skills, and adaptive self-efficacy.

5. Psychological Construct

The theoretical core of the PPNSIE is the psychological construct of generalized locus of control of reinforcement. As conceptualized within cognitive-behavioral traditions, locus of control represents a continuum of generalized expectancies regarding the relationship between one’s actions and subsequent environmental outcomes. It does not measure isolated behavioral skills, but rather the child’s underlying attributional belief system across diverse life situations.

Internal Locus of Control

An internal locus of control is characterized by the belief that positive and negative events are contingent upon personal initiative, ability, effort, decision-making, and perseverance. A child scoring high in internality views their environment as responsive to their behavior. For example, when presented with Item 1 (“Do you believe that you can stop yourself from catching a cold?”) or Item 27 (“Are you the kind of child who believes that thinking about what you are going to do makes things turn out better?”), an internal child conceptualizes preventive behaviors (e.g., hand washing, wearing warm clothes) and cognitive planning as impactful actions capable of modifying outcomes. Similarly, in peer contexts, endorsing the belief that one can stop an aggressive peer (Item 8) or turn an adversary into a friend (Item 21) reflects an active problem-solving disposition.

External Locus of Control

Conversely, an external locus of control reflects the belief that outcomes are unconnected to one’s actions, instead dictated by chance, luck, superstition, fate, or powerful external figures (parents, teachers, peers). Items reflecting this orientation capture superstitious beliefs (Item 3: “Do you have a good luck charm?”; Item 7: “Do you believe that wishing can make good things happen?”; Item 10: “Do you have a lucky number?”), arbitrary victimization (Item 4: “Are you often blamed for things that just aren’t your fault?”; Item 14: “When people were mean to you, was it usually for no reason at all?”), or genetic/immutable determinants of ability (Item 20: “Are most kids just born good at running races?”; Item 23: “Is it almost impossible to try to win a game because most of the other kids are just plain better than you are?”). Children situated at the external pole perceive their social and physical environment as governed by arbitrary rules that render personal effort futile.

Social Desirability (Lie Dimension)

Because young children frequently experience demand characteristics and may express an acquiescent response set when questioned by adult examiners, Nowicki and Duke embedded 8 social desirability filler items (e.g., Item 13: “Do you always do the right things?”; Item 18: “Do you always wash your hands before every meal?”; Item 24: “Do you sometimes tell a little lie?”; Item 33: “Do you ever get angry?”). These items allow researchers to detect whether a child’s answers reflect authentic attributional beliefs or an inflated tendency to claim unrealistic moral perfection.

6. Theoretical Framework

The PPNSIE is fundamentally anchored in Julian B. Rotter’s (1954, 1966) Social Learning Theory. Rotter postulated a mathematical and conceptual model of human behavior based on four core variables: Behavior Potential (BP), Expectancy (E), Reinforcement Value (RV), and the Psychological Situation (s):

BP_{x, s1, Ra} = f(E_{x, Ra, s1} & RV_{a, s1})

This formulation states that the likelihood of a specific behavior occurring in a given situation is a function of the individual’s expectancy that the behavior will yield a specific reinforcement, combined with the subjective value assigned to that reinforcement. As an individual encounters repetitive learning trials across diverse ecological settings, discrete expectancies generalize into broad, overarching cognitive sets termed generalized expectancies.

Rotter differentiated between two primary categories of generalized expectancies: generalized expectancies for problem-solving (e.g., interpersonal trust) and generalized expectancies for internal versus external control of reinforcement. In developing the PPNSIE, Nowicki and Duke extended this framework by operationalizing how generalized expectancies emerge in developmental ontogeny. According to developmental social learning theory, young infants begin life in a condition of absolute external dependence. As cognitive maturation (Piaget’s preoperational to concrete operational shifts) and physical autonomy advance, children gradually discover causal relationships between their actions and subsequent reinforcements.

Nowicki and Duke argued that while young children naturally exhibit higher baseline levels of external control expectancies compared to older youth, meaningful individual differences emerge early. Environmental factors such as consistent parenting, predictable discipline, secure attachment, and opportunities for autonomous decision-making foster an internal orientation. Conversely, chaotic, unpredictable, overly punitive, or overprotective environments encourage an external orientation, convincing the young child that personal effort is inconsequential.

7. Validity

The validity of the PPNSIE has been evaluated through multiple psychometric methodologies spanning five decades of empirical research.

Construct and Developmental Validity

Construct validity is primarily substantiated by age-related developmental trends. In congruence with social learning theory, cross-sectional and longitudinal studies consistently document a systematic shift toward internality as children mature from age 4 to age 8. In Nowicki and Duke’s (1974) original normative samples, mean external scores declined steadily across chronological grade levels, confirming that developing autonomy and cognitive maturation correspond with lower external control scores.

Convergent Validity

Convergent validity is evidenced by significant correlations with other developmentally modified locus of control instruments. The PPNSIE correlates moderately to highly with the Bialer-Cromwell Children’s Locus of Control Scale (ranging from r = .42 to r = .68) and the Children’s Nowicki-Strickland Internal-External Control Scale (CNSIE) when cross-administered to transitional cohorts of 6- to 8-year-old children (r = .51 to .64). Furthermore, convergent validity is established through behavioral observations: children scoring higher in internality display significantly greater persistence during challenging cognitive puzzles, higher sustained attention during laboratory tasks, and enhanced exploratory play behaviors.

Predictive and Academic Validity

Predictive validity research has repeatedly linked PPNSIE scores to academic readiness, achievement, and psychological adjustment. Longitudinal data from early childhood research indicate that preschool internal control scores significantly predict kindergarten and first-grade reading readiness, math competence, and classroom task engagement, even after controlling for baseline intellectual quotient (IQ). Furthermore, high external scores correlate positively with teacher ratings of distractibility, hyperactivity, emotional withdrawal, and dependent clinginess in early childhood classrooms.

Discriminant Validity

Discriminant validity analyses demonstrate that locus of control as measured by the PPNSIE is empirically distinct from general intelligence. Correlations between the PPNSIE and standardized cognitive intelligence tests (such as the Peabody Picture Vocabulary Test [PPVT] and the WPPSI) typically fall within the non-significant or negligible range (r = -.08 to -.19), confirming that the instrument assesses attributional beliefs rather than cognitive capability.

8. Reliability

Assessing psychometric reliability in preschool-age children presents unique measurement challenges due to developing attention spans, susceptibility to fatigue, and evolving language comprehension. Despite these challenges, the PPNSIE demonstrates robust reliability coefficients across diverse demographic cohorts.

Internal Consistency

In the original validation studies conducted by Nowicki and Duke (1974), split-half reliability (corrected by the Spearman-Brown formula) yielded coefficients ranging from .63 for four- and five-year-olds to .72 for six- and seven-year-olds. Subsequent investigations utilizing the Kuder-Richardson Formula 20 (KR-20)—the standard index of internal consistency for dichotomous survey items—have documented values between .61 and .75. While these values are modest in comparison to adult scales, they are considered solid and psychometrically acceptable for clinical and survey measures designed for children under seven years of age.

Test-Retest Reliability

Temporal stability assessments underscore the instrument’s robustness over short and intermediate test-retest intervals. Over a six-week test-retest window, Nowicki and Duke reported a stability coefficient of r = .79 for primary-grade children and r = .67 for preschool children. These findings indicate that while young children remain responsive to environmental inputs and developmental progression, their generalized expectancies exhibit substantial longitudinal stability.

9. Factor Analysis

The dimensional structure of the PPNSIE has been explored through exploratory factor analysis (EFA) and subsequent confirmatory factor analysis (CFA). Although Rotter originally postulated locus of control as a generalized, unidimensional continuum, factor analyses of the PPNSIE across early childhood populations consistently reveal a multi-factorial structure that mirrors the developmental challenges of early childhood.

Empirical Factor Structure

Principal components analyses with varimax and oblique rotations typically extract three to four primary factors accounting for 38% to 48% of the total variance across the 26 locus of control items:

• Factor 1: Interpersonal / Peer Control: Items loading heavily onto this factor measure the child’s perceived ability to affect peer behaviors, navigate peer aggression, and form friendships (e.g., Item 8: kid decides to hit you; Item 9: friends do what you want; Item 21: making an enemy like you; Item 34: make other kids like you). Typical item factor loadings range from .45 to .68.
• Factor 2: Helplessness / Arbitrary Victimization: This factor encompasses beliefs that negative events, blame, and social rejections are completely outside one’s control (e.g., Item 4: blamed for things not your fault; Item 14: people mean for no reason; Item 16: little you can do to make it right; Item 25: person doesn’t like you). Factor loadings range between .41 and .62.
• Factor 3: Superstition, Luck, and Magic: This dimension captures reliance on non-causal mechanisms to achieve outcomes (e.g., Item 3: good luck charm; Item 7: wishing makes good things happen; Item 10: lucky number; Item 28: smart versus lucky). Factor loadings typically exceed .50.
• Factor 4: Parental / Authority Influence: Items loading here evaluate agency within the family hierarchy (e.g., Item 11: getting Mommy and Daddy to do what you want; Item 17: easy to get your own way at home; Item 22: should Mommy and Daddy decide).

Confirmatory factor analytic investigations have indicated acceptable fit indices for both a hierarchical higher-order model (where an overarching generalized locus of control factor subsumes the specific subdomains) and a correlated multi-factor model (CFI > .90, RMSEA < .06), affirming the conceptual coherence of the construct in early childhood.

10. Instrument / Measurement Tool

• Test Type: Standardized Psychological Measurement Tool / Semi-Structured Oral Interview.
• Target Population: Children aged 4 to 8 years (Preschool, Kindergarten, Grade 1, and Grade 2).
• Administration Format: Individual, face-to-face oral administration by a trained examiner, psychologist, or educator. Questions are read aloud to eliminate reading comprehension barriers.
• Item Count: 34 total items.
  • 26 Locus of Control Items: Used to calculate the overall Locus of Control Score.
  • 8 Filler / Social Desirability Items: Items 13, 15, 18, 19, 24, 29, 31, and 33. These detect acquiescence and extreme social desirability responding and are not added to the core locus of control score.
• Response Scale: Dichotomous forced-choice format: Yes or No.
• Administration Time: Approximately 10 to 15 minutes.
• Scoring Rules:
  • Items are scored in the External direction. One point (1) is awarded for every external response; zero points (0) are awarded for an internal response.
  • External Responses keyed as “Yes”: Items 3, 4, 7, 10, 14, 20, 22, 23, 26, 32.
  • External Responses keyed as “No”: Items 1, 2, 5, 6, 8, 9, 11, 12, 16, 17, 21, 25, 27, 28, 30, 34.
  • Total Score Range: 0 to 26. Higher scores reflect a more external locus of control; lower scores indicate a more internal locus of control.
  • Social desirability items (13, 15, 18, 19, 24, 29, 31, 33) are scored independently to assess response bias.

11. Permissions & Fee and Test Year

The Nowicki Preschool and Primary Internal-External Control Scale (PPNSIE) was originally published in 1974 in the Journal of Genetic Psychology (Nowicki & Duke, 1974). Under traditional academic research conventions, the scale was published for open scholarly use within non-commercial scientific, educational, and developmental investigations. Stephen Nowicki Jr. and Marshall P. Duke placed the scale in the academic public domain for scientific researchers and clinical professionals provided proper formal citation and attribution are maintained. No commercial testing fee or royalty payment is required for non-commercial educational and academic research. Researchers planning large-scale clinical trials or commercial software integrations are advised to contact the authors or Emory University’s Department of Psychology for licensing clarity.

12. References

• Nowicki, S., & Duke, M. P. (1974). A preschool and primary internal-external control scale. The Journal of Genetic Psychology, 125(2), 251–259. https://doi.org/10.1080/00221325.1974.10532304
• Nowicki, S., & Strickland, B. R. (1973). A locus of control scale for children. Journal of Consulting and Clinical Psychology, 40(1), 148–154. https://doi.org/10.1037/h0033978
• Rotter, J. B. (1954). Social learning and clinical psychology. Prentice-Hall. https://doi.org/10.1037/10788-000
• Rotter, J. B. (1966). Generalized expectancies for internal versus external control of reinforcement. Psychological Monographs: General and Applied, 80(1), 1–28. https://doi.org/10.1037/h0092976
• Nowicki, S. (2016). Choice or chance: Understanding your locus of control and why it matters. Prometheus Books.
• Duke, M. P., & Nowicki, S. (1974). Locus of control and achievement: The confirmation of a theoretical relationship. Journal of Psychology, 87(2), 263–267. https://doi.org/10.1080/00223980.1974.9915701
• Stollard, Y. (2011). Investigating locus of control and associated variables in primary school children (Doctoral dissertation, University of Worcester). http://eprints.worc.ac.uk/1431/

13. Items of the Scale