Index of Self-Actualization

1. Abstract

The Index of Self-Actualization (ISA), frequently designated in the psychometric literature as the Short Index of Self-Actualization, is a 15-item self-report psychological instrument developed by Alvin Jones and Rick Crandall in 1986. Created to address the practical limitations of lengthy predecessors such as Everett Shostrom’s 150-item Personal Orientation Inventory (POI) and the Personal Orientation Dimensions (POD), the ISA provides an efficient, reliable, and valid operationalization of Abraham Maslow’s construct of self-actualization. The instrument evaluates psychological maturity, personal autonomy, emotional openness, positive interpersonal regard, and capacity for growth across a 6-point Likert response scale ranging from 1 (Strongly Disagree) to 6 (Strongly Agree). Eight of the fifteen items are reverse-scored to mitigate acquiescence bias, yielding a composite score ranging from 15 to 90, where higher scores signify greater actualization and personality integration.

During its initial empirical validation across heterogeneous collegiate and community cohorts comprising approximately 500 participants, the ISA demonstrated acceptable internal consistency (Cronbach’s α = .65 for the original 4-point iteration, improving to α = .72 with the finalized 6-point metric) and solid temporal stability (two-week test-retest reliability of r = .81). Exploratory principal components analysis using varimax rotation delineated a five-factor internal architecture encompassing: (1) Autonomy and Self-Direction, (2) Self-Acceptance and Self-Esteem, (3) Emotional Openness and Expressive Freedom, (4) Interpersonal Trust and Relational Responsibility, and (5) Reality Adaptation and Constructive Confrontation of Adversity. Subsequent psychometric evaluations by independent researchers have validated the scale’s convergent validity against constructs including self-esteem, internal locus of control, rationality, and tolerance of ambiguity, while verifying divergent validity in relation to neuroticism and psychological distress. The ISA remains one of the most widely applied brief instruments in humanistic personality assessment, positive psychology, and organizational counseling research.

2. Keywords

Self-actualization, Index of Self-Actualization, Short Index of Self-Actualization, Alvin Jones, Rick Crandall, Personal Orientation Inventory, Humanistic Psychology, Abraham Maslow, Autonomy, Psychological Health, Personality Assessment, Psychometrics

3. Authors

The Index of Self-Actualization was formulated, psychometrically tested, and published by Alvin Jones and Rick Crandall in 1986 through their seminal paper titled “Validation of a Short Index of Self-Actualization”, published in the Personality and Social Psychology Bulletin.

• Alvin Jones, Ph.D.: Developmental and personality psychologist who collaborated on the operationalization of humanistic personality dimensions and psychometric reduction of extensive inventories into brief assessment formats.
• Rick Crandall, Ph.D.: Renowned social psychologist, psychometrician, and scholar recognized for his work on self-esteem measurement, the psychology of leisure, and humanistic well-being. Dr. Crandall contributed extensively to instrument design, scale validation protocols, and the empirical examination of social behavior, holding editorial roles including co-editing the landmark volume Handbook of Self-Actualization (1991).

Correspondence regarding the original development of the instrument was historically directed through the Department of Psychology and collaborative humanistic research centers in Texas and Illinois where the normative validation studies were administered.

4. Purpose

The primary purpose of the Index of Self-Actualization is to provide a brief, psychometrically sound, and conceptually coherent measurement tool capable of differentiating between self-actualizing and non-self-actualizing individuals. Prior to the construction of the ISA, empirical researchers evaluating humanistic constructs faced a significant methodological hurdle: existing operational measures, predominantly Everett Shostrom’s (1964) Personal Orientation Inventory (POI), comprised 150 paired-choice comparative statements. Although comprehensive, the POI imposed a substantial cognitive burden, induced respondent fatigue, required up to 40 minutes for administration, and exhibited forced-choice response formats that complicated modern multivariate analyses.

The theoretical rationale behind the ISA rests on Abraham Maslow’s proposition that self-actualization represents the realization of one’s fullest potential, characterized by autonomy, profound self-awareness, authentic interpersonal relations, resistance to enculturation, and emotional integration. Jones and Crandall sought to distill the essential psychological markers identified within Shostrom’s multi-dimensional framework into a concise self-report survey that could be embedded within omnibus test batteries, longitudinal survey designs, and applied clinical screenings without precipitating participant attrition.

In research contexts, the ISA serves as a core index of flourishing, eudaimonic well-being, personal growth, and individual difference dynamics. Investigators in occupational, organizational, and educational settings deploy the instrument to examine leadership emergence, self-directed learning, intrinsic motivation, and stress resilience. In clinical, counseling, and psychotherapy research, the ISA functions as an outcome indicator to monitor therapeutic growth, tracking increases in self-acceptance, the reduction of pathogenic approval-seeking dependencies, and the liberation of emotional expressivity over the course of humanistic, experiential, or cognitive interventions.

5. Psychological Construct

The construct measured by the Index of Self-Actualization is multi-dimensional yet functionally integrated, reflecting an individual’s degree of psychological maturity, inner-directedness, and full human functioning. Although the total composite score serves as an overarching metric of self-actualization, Jones and Crandall’s principal components factor analysis identified five distinct psychological dimensions embedded within the 15 items:

Autonomy and Self-Direction

This core dimension evaluates an individual’s independence from external pressures, social conformity, and excessive reliance on the approval of others. Self-actualizing individuals exhibit an internal locus of evaluation and behavior regulation. This dimension is measured by Items 2, 5, 9, 10, and 11. For instance, Item 10 (“It is better to be yourself than to be popular”) captures the explicit prioritization of personal authenticity over superficial social consensus, whereas reverse-scored Item 5 (“It is always necessary that others approve what I do”) evaluates neurotic dependency on societal validation.

Self-Acceptance and Self-Esteem

Central to humanistic theories is the premise that genuine growth cannot occur in the absence of unconditional self-regard and realistic appraisal of personal limitations. This factor assesses the degree to which an individual embraces their personal strengths while maintaining compassion toward their human fallibilities without paralyzing self-criticism. Measured by Items 6, 8, and 14, this dimension taps into freedom from catastrophic fears of inadequacy (Item 14: “I am bothered by fears of being inadequate”) and the authentic acceptance of one’s human shortcomings (Item 6: “I don’t accept my own weaknesses”).

Emotional Openness and Freedom of Expression

Self-actualization entails a profound integration of affective states, permitting the uninhibited yet constructive awareness and communication of both positive and negative emotional experiences. Items 1 and 4 constitute this dimension. Item 1 (“I do not feel ashamed of any of my emotions”) reflects freedom from internal affective censorship and moralistic guilt regarding innate feeling states, while Item 4 (“I feel free to be angry at those I love”) demonstrates the capacity to tolerate relational conflict and acknowledge ambivalent feelings without fearing the total dissolution of intimacy.

Interpersonal Trust and Relational Responsibility

Actualizing persons do not exist in solipsistic isolation; rather, their relational functioning is distinguished by profound interpersonal trust, mutual respect, benevolence, and meaningful social interest. Evaluated through Items 3, 13, and 15, this dimension operationalizes positive relational engagement. Item 3 (“I believe that people are essentially good and can be trusted”) measures generalized positive human regard, Item 13 taps social obligation and prosocial altruism, and Item 15 (“I am loved because I give love”) reflects an active, generative understanding of reciprocal relational bonding rather than passive narcissistic demand.

Reality Adaptation and Constructive Confrontation

This dimension reflects the psychological resilience required to confront difficult, painful, or complex life realities directly rather than seeking refuge in avoidant defenses, repression, or superficial placation. Captured by Items 7 and 12, this construct measures the ability to relate to diverse individuals without requiring moral conformity (Item 7: “I can like people without having to approve of them”) and the fortitude to communicate one’s personal truth even when such expression carries social friction or unpredictable consequences (Item 12: “I can express my feelings even when they may result in undesirable consequences”).

6. Theoretical Framework

The Index of Self-Actualization is firmly anchored within the theoretical edifice of Humanistic Psychology, primarily drawing from the foundational frameworks established by Abraham Maslow (1954, 1968, 1970) and operationalized psychometrically by Everett L. Shostrom (1964, 1975).

Maslow’s Hierarchy of Needs and Self-Actualization

Maslow proposed that human motivation is structured around a hierarchy of needs, advancing from basic physiological necessities, safety, belongingness, and love, to esteem needs. Once these “deficiency needs” (D-needs) are sufficiently satisfied, an individual crosses the threshold into “being needs” (B-needs or metamotivation), where the driving impulse is the realization of idiosyncratic human potential: self-actualization. According to Maslow, self-actualizers perceive reality efficiently, accept themselves and others unconditionally, exhibit high spontaneity and problem-centered orientations, maintain autonomy from cultural conditioning, enjoy profound interpersonal relationships, and frequently experience “peak experiences.”

From the POI to the Short Index

In 1964, Everett Shostrom developed the Personal Orientation Inventory to provide empirical measurement for Maslow’s qualitative clinical descriptions. Shostrom structured the construct around two major ratio scales—Time Competence (the ability to live fully in the present rather than ruminating on the past or dreading the future) and Inner-Directedness (deriving guiding principles and motivation from internal sources rather than external peer or social pressures)—supplemented by ten subscales capturing values, existentiality, feeling reactivity, and capacity for intimacy.

Jones and Crandall recognized that while the POI was conceptually brilliant, its psychometric architecture was cumbersome. To create the ISA, Jones and Crandall extracted the core variance of the POI’s inner-directedness and value orientation subscales, augmenting them with items from Shostrom’s updated Personal Orientation Dimensions (1975). In doing so, the theoretical framework shifted from a paired-comparison structure to a continuous Likert measurement model, treating self-actualization as an integrated trait continuum reflecting psychological health, cognitive-emotional flexibility, and authentic agency.

7. Validity

The construct, convergent, discriminant, and criterion validities of the Index of Self-Actualization have been substantiated across multiple empirical investigations involving clinical, university, and community samples.

Convergent and Criterion Validity

In their initial validation series across Texas, Illinois, and North Carolina cohorts (total N ≈ 500), Jones and Crandall (1986) evaluated the ISA against an extensive battery of established psychological instruments:

• Personal Orientation Inventory (POI): The ISA demonstrated statistically significant positive correlations with the overarching Inner-Directed scale of the POI (r values typically ranging between .50 and .67 across sub-cohorts), verifying that the short form captured the primary variance of Shostrom’s original instrument.
• Self-Esteem: Corroborating humanistic postulates that self-worth is foundational to actualization, the ISA correlated positively with the Rosenberg Self-Esteem Scale (r = .50, p < .001).
• Rationality and Cognitive Health: The ISA yielded significant positive associations with the Rational Behavior Inventory (Whiteman & Shorkey, 1978), demonstrating that self-actualizing individuals maintain fewer irrational, self-defeating beliefs.
• Tolerance of Ambiguity: Scores on the ISA were positively correlated with Budner’s (1962) Tolerance of Ambiguity Scale, confirming Maslow’s assertion that actualized personalities tolerate uncertain and complex cognitive scenarios without defensive anxiety.
• Leisure Ethic: Significant correlations were found with Slivken and Crandall’s (1980) Leisure Ethic Scale, confirming an orientation toward self-determined, intrinsically rewarding activity.

Discriminant and Divergent Validity

Divergent validity was confirmed via comparative administration alongside Eysenck’s Personality Inventory (EPI; Eysenck & Eysenck, 1968). The ISA correlated negatively with the EPI Neuroticism dimension (r ≈ -.37 to -.45, p < .001), corroborating the theoretical premise that self-actualization represents psychological stability and low emotional maladjustment. Correlations with Extraversion were modestly positive, showing that self-actualization is not merely sociability, but represents inner-directed autonomy that can exist within both introverted and extraverted temperaments. Furthermore, social desirability scales demonstrated minimal overlap with ISA scores, indicating that responses do not merely reflect an urge to portray oneself favorably.

8. Reliability

The reliability of the Index of Self-Actualization has been rigorously evaluated across both internal consistency parameters and temporal test-retest intervals.

Internal Consistency

During the developmental phase using a 4-point response metric, an initial pool of 19 items yielded a coefficient alpha of .65 among 73 college students. Item-total analyses led to the deletion of four psychometrically redundant items, reducing the inventory to 15 items. To enhance scale variance and measurement precision, Jones and Crandall transitioned the response metric to a 6-point continuum. In a cross-validation sample of 274 university students, the finalized 15-item 6-point ISA achieved an internal consistency coefficient of Cronbach’s α = .72. While modest by clinical diagnostic standards, this level of internal consistency is considered well-suited for a brief 15-item inventory spanning a conceptually heterogeneous, multi-faceted construct.

Test-Retest Stability

The temporal stability of the ISA has been confirmed across several retest intervals:

• Over a 12-day interval utilizing the preliminary 4-point format, a test-retest reliability coefficient of r = .69 (N = 67) was documented.
• Over a two-week interval (14 days) utilizing the finalized 6-point format, the test-retest correlation rose to r = .81 (N = 67), demonstrating solid stability of the underlying trait construct over time.
• Direct correlational analysis comparing the 4-point and 6-point scale administrations among 84 respondents yielded an equivalence coefficient of r = .91, confirming that expanding the response variance preserved the underlying latent construct while enhancing measurement fidelity.

9. Factor Analysis

The latent structural integrity of the ISA has been examined through multiple exploratory and confirmatory factor analyses. In the primary derivation study conducted by Alvin Jones and Rick Crandall (1986), an exploratory principal components factor analysis with varimax orthogonal rotation was conducted on data from the validation sample.

Jones and Crandall Five-Factor Structure

The original exploratory analysis yielded an interpretable five-factor solution accounting for the systematic variance of the instrument:

• Factor 1: Autonomy and Self-Direction — Defined by Item 2 (Must do what others expect), Item 5 (Need for others’ approval), Item 9 (Avoid complex domains), Item 10 (Better to be yourself than popular), and Item 11 (No dedicated mission in life). Item factor loadings on this dimension ranged from .48 to .71.
• Factor 2: Self-Acceptance and Self-Esteem — Comprising Item 6 (Don’t accept weaknesses), Item 8 (Fear of failure), and Item 14 (Bothered by fears of inadequacy), with loadings spanning .52 to .68.
• Factor 3: Emotional Openness and Expressive Freedom — Comprising Item 1 (Not ashamed of emotions) and Item 4 (Free to be angry at loved ones), loading between .55 and .74.
• Factor 4: Interpersonal Trust and Relational Responsibility — Defined by Item 3 (People are good and can be trusted), Item 13 (Do not feel responsible to help), and Item 15 (Loved because I give love), with loadings from .46 to .66.
• Factor 5: Reality Adaptation and Constructive Confrontation — Consisting of Item 7 (Can like people without approving of them) and Item 12 (Express feelings despite undesirable consequences), with loadings between .51 and .69.

Subsequent Factor Replications and Critiques

Subsequent psychometric investigations have subjected the ISA to critical examination. Tucker and Weber (1988) investigated the factorial validity of the ISA across 347 college students and argued that the five-factor model showed instability across varying demographic subsets, suggesting that a generalized single-factor model or an alternative three-factor oblique model (focusing on Self-Direction, Emotional Expression, and Existential Confidence) accounted for significant variance. Similarly, Flett, Blankstein, and Hewitt (1991) reanalyzed the scale’s factor structure in the Handbook of Self-Actualization, noting that while the total composite score serves as an effective global measure of actualization, the individual 2-item and 3-item subscales exhibit limited subscale reliability and are best utilized as descriptive facets rather than independent subscale indices.

10. Instrument / Measurement Tool

• Instrument Name: Index of Self-Actualization (ISA) / Short Index of Self-Actualization
• Authors: Alvin Jones, Ph.D. and Rick Crandall, Ph.D. (1986)
• Format: 15-item self-report questionnaire
• Target Population: Adults and adolescents aged 16 and older; applicable in university, clinical, counseling, and organizational settings
• Administration Time: Approximately 3 to 5 minutes
• Response Scale: 6-point Likert-type scale formatted as follows:
  • 6 = Strongly Agree
  • 5 = Agree
  • 4 = Somewhat Agree
  • 3 = Somewhat Disagree
  • 2 = Disagree
  • 1 = Strongly Disagree
• Scoring and Directionality:
  • Directly Scored Items: Items 1, 3, 4, 7, 10, 12, and 15 are scored directly as rated (Strongly Agree = 6 … Strongly Disagree = 1).
  • Reverse Scored Items: Items 2, 5, 6, 8, 9, 11, 13, and 14 represent non-actualizing or defensive tendencies and are reversed prior to calculating composite scores:
    • Strongly Agree (6) → 1
    • Agree (5) → 2
    • Somewhat Agree (4) → 3
    • Somewhat Disagree (3) → 4
    • Disagree (2) → 5
    • Strongly Disagree (1) → 6
  • Total Score Calculation: The sum of all 15 recoded items produces a total score ranging from a minimum of 15 to a maximum of 90 points. Higher overall values reflect higher levels of self-actualization, inner-directed autonomy, and psychological health.

11. Permissions & Fee and Test Year

The Index of Self-Actualization was formally published in 1986 in the peer-reviewed scholarly journal Personality and Social Psychology Bulletin by authors Alvin Jones and Rick Crandall. The instrument was developed as an academic, open-access research alternative to proprietary commercial assessments such as the Personal Orientation Inventory (which required paid testing forms and scoring services through EdITS).

Under academic research conventions and fair use principles, the 15 items of the ISA are widely accessible for non-commercial educational, scientific, clinical, and scholarly inquiry without royalty fees, provided appropriate scholarly attribution is cited to Jones and Crandall (1986). Researchers planning commercial utilization, proprietary software integration, or widespread organizational consultancy implementation should verify current copyright compliance through the Society for Personality and Social Psychology (SPSP) and the original publisher (Sage Publications).

12. References

Budner, S. (1962). Intolerance of ambiguity as a personality variable. Journal of Personality, 30(1), 29–50. https://doi.org/10.1111/j.1467-6494.1962.tb02303.x

Crandall, R., & Slivken, K. (1980). Leisure ethic scale. In J. Robinson, P. Shaver, & L. Wrightsman (Eds.), Measures of Social Psychological Attitudes. Academic Press.

Dragnet-Eckert, F. (2001). The adaptive function of self-esteem: Autonomy and the growth-wellbeing motive (Doctoral dissertation, New School for Social Research). ProQuest Dissertations Publishing.

Eysenck, H. J., & Eysenck, S. B. G. (1968). Manual for the Eysenck Personality Inventory. Educational and Industrial Testing Service.

Flett, G. L., Blankstein, K. R., & Hewitt, P. L. (1991). Factor structure of the Short Index of Self-Actualization. Journal of Social Behavior and Personality, 6(5), 321–329.

Jones, A., & Crandall, R. (1986). Validation of a short Index of Self-Actualization. Personality and Social Psychology Bulletin, 12(1), 63–73. https://doi.org/10.1177/0146167286121007

Maslow, A. H. (1954). Motivation and Personality. Harper & Row.

Maslow, A. H. (1968). Toward a Psychology of Being (2nd ed.). Van Nostrand Reinhold.

Maslow, A. H. (1970). Religions, Values, and Peak-Experiences. Penguin Books.

Robertson, C. (2005). Creativity and aging: A grounded theory study of creative older individuals (Doctoral dissertation, Saybrook Graduate School and Research Center). ProQuest Dissertations Publishing.

Rosenberg, M. (1965). Society and the Adolescent Self-Image. Princeton University Press. https://doi.org/10.1515/9781400876136

Shostrom, E. L. (1964). An inventory for the measurement of self-actualization. Educational and Psychological Measurement, 24(2), 207–218. https://doi.org/10.1177/001316446402400203

Shostrom, E. L. (1975). Personal Orientation Dimensions. Educational and Industrial Testing Service.

Tucker, R. K., & Weber, D. R. (1988). Factorial validity of Jones and Crandall’s Short Index of Self-Actualization. Psychological Reports, 63(1), 39–45. https://doi.org/10.2466/pr0.1988.63.1.39

Weiss, A. S. (1991). The measurement of self-actualization: The quest for the test may be as challenging as the search for the self. Journal of Social Behavior and Personality, 6(5), 265–290.

Whiteman, M., & Shorkey, C. (1978). Development of the Rational Behavior Inventory. Educational and Psychological Measurement, 38(4), 1143–1149. https://doi.org/10.1177/001316447803800441

13. Items of the Scale