Short Index of Self-Actualization (SISA)

Abstract

The Short Index of Self Actualization (SISA) is a concise, self-report psychological scale designed to measure the core components of self-actualization as conceptualized within Humanistic Psychology. Developed to provide an efficient alternative to lengthy instruments like the Personal Orientation Inventory (POI), the SISA typically consists of 14 or 15 items focusing on an individual’s level of autonomy, emotional acceptance, self-acceptance, and capacity for deep interpersonal relationships. The scale utilizes a four-point Likert scale format, making it suitable for quick administration in research settings where measurement efficiency is crucial.

Keywords

Self-Actualization, Humanistic Psychology, SISA, Personality Assessment, Motivation, Crandall & Jones, Autonomy, Emotional Acceptance.

Authors

R. Crandall, A. Jones

Purpose

The primary purpose of the SISA is to assess the degree to which an individual exhibits characteristics associated with self-actualizing people, based on the theoretical framework established by Abraham Maslow. It aims to quantify psychological maturity, personal growth, and the ability to function autonomously.

The scale serves as a valuable research tool for correlational studies, allowing researchers to quickly quantify self-actualization tendencies and relate them to various psychological constructs, such as well-being, coping mechanisms, and personality traits.

Construct

The SISA measures the construct of self-actualization, which is defined as the realization or fulfillment of one’s full potential. The items are structured to capture several key dimensions of this construct, including:

• Autonomy and Independence: The ability to act based on internal values rather than external pressures or expectations (e.g., Item 2, Item 4).
• Emotional and Self-Acceptance: The capacity to accept one’s own weaknesses and emotions without shame or defensiveness (e.g., Item 1, Item 6).
• Philosophical Perspective: A focus on being authentic and having a dedicated mission or purpose in life (e.g., Item 9, Item 10).
• Trust and Interpersonal Relations: Belief in the essential goodness of people and the ability to maintain non-judgmental relationships (e.g., Item 3, Item 7).

Validity

Studies assessing the validity of the SISA, particularly those summarized by Crandall and Jones (1991), generally indicate acceptable levels of construct and convergent validity. The SISA is expected to correlate positively with longer, established measures of self-actualization, such as the Personal Orientation Inventory (POI), demonstrating its ability to capture the same underlying psychological trait effectively.

Furthermore, criterion validity is often supported by findings that SISA scores correlate meaningfully with indicators of psychological health, low neuroticism, high self-esteem, and general life satisfaction, aligning with theoretical predictions for self-actualizing individuals.

Reliability

Reliability analyses for the SISA typically focus on internal consistency, measured using Cronbach’s alpha. While the shortened nature of the scale inherently limits the maximum achievable alpha compared to longer instruments, the SISA has generally demonstrated adequate reliability for a brief measure, especially when used in group research rather than individual diagnosis.

The reliability of the SISA is considered satisfactory for screening and research purposes, though researchers should be mindful that minor variations in item inclusion (such as the omission of Item 15 in some versions) may slightly impact the final coefficient.

Factor Analysis

Initial factor analyses of the SISA often suggest that the scale is largely unidimensional, supporting its use as a measure of a single, overarching self-actualization construct. However, due to the breadth of the self-actualization concept, some analyses may reveal minor sub-factors corresponding to the clusters of items, such as autonomy versus emotional awareness.

The structure is generally accepted as primarily reflective of a unified self-actualization score, justifying the calculation of a single total score for research applications.

Instrument

Test Type: Self-Report Psychological Scale

Format: 14 or 15 items utilizing a 4-point Likert scale.

Language Available: English (Original)

Population Group: General Population

Age Group: Adolescents and Adults

Population Details: Primarily utilized in non-clinical settings, including university student populations and general community samples.

Test Methodology: Respondents select one option from the 4-point scale (1=agree, 4=disagree). Scoring requires reversal of negatively worded items (marked N or determined empirically) so that higher total scores indicate a greater degree of self-actualization.

Keywords

SISA, Self-Acceptance, Autonomy, Maslow, Measurement Issues, Psychological Assessment, Personality Scales, Motivation and Work.

Authors

Author ORCID Identifier: Not specified in source materials.

Affiliation Email addresses: Not specified in source materials.

Correspondence Address: Correspondence related to the seminal work should be directed toward the authors listed in the reference section.

Permissions & Fee and Test Year

The primary discussion and validation context for the SISA are found in the 1991 special issue of the Journal of Social Behavior and Personality. The scale items are generally utilized for academic research purposes. Specific fee structures and formal permissions for commercial use would need to be determined by contacting the original authors or their affiliated institutions.

Test Year (Primary Publication): 1991 (Crandall & Jones discussion).

Reference’s

• Crandall, R., & Jones, A. (1991). Issues in self-actualization measurement. In A. Jones & R. Crandall (Eds.), Handbook of self-actualization (special issue). Journal of Social Behavior and Personality, 6, 339–344.
• A related academic paper discussing the theoretical context is: Garcia, J. A. (N.D.). TOWARD AN ANARCHIST THEORY OF SELF: WILDERNESS, ACTUALIZATION AND AUTHORITY. (Under the Direction of William D. McIntosh).
• Supplementary information regarding motivation and work, which provides context for the construct, is available in the original PDF source: The original PDF can be downloaded here: http://www.lcps.org/cms/lib4/VA01000195/Centricity/Domain/11396/Chapter%2012%20-%20Motivation%20and%20Work.PDF

Items of the Short Index of Self Actualization (SISA)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

Please respond to the items below using the following rating scale:

1 = agree

2 = somewhat agree

3 = somewhat disagree

4 = disagree

1. (P) I do not fee ashamed of any of my emotions.
2. (P) I feel I must do what others expect me to do.
3. (P) I believe that people are essentially good and can be trusted.
4. (P) It is always necessary that others approve of what I do.
5. (N) I feel free to be angry at those I love.
6. (P) I don’t accept my own weaknesses.
7. (P) I can like people without ha‎ving to approve of them.
8. (N) I avoid attempts to analyze and simplify complex domains.
9. (P) It is better to be yourself than it is to be popular.
10. (P) I have no mission in life to which I feel especially dedicated.
11. (P) I can express my feelings even when they may result in undesirable consequences.
12. (P) I do not feel responsible to help anybody.
13. (P) I am loved because I can give love.
14. (P) I am bothered by fears of being inadequate.
15. I fear failure. (Original SISA item omitted from Watson et al.‚ 1990)