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existential psychology

Strathclyde Inventory (SI-22) Test

Take the online Strathclyde Inventory (SI-22) Test - AI psychologist FreudlyYou can take Strathclyde Inventory (SI-22) Testhere. Online version of a simple and accurate psychological test with interpretation.en
Understand personal growth in openness, self-acceptance, and autonomy in about 5 minutes. 22 quick items support easy progress tracking in counseling, coaching, or therapy.
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Questions: 225 minutes
08:30
October 2, 2025
October 2, 2025
Material has been updated
October 2, 2025
Material has been published
19,353 views
1,934 completions
1,640 likes
Verified by Daniel Hall
Psychologist with 25 years of experience
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Scale Explorer

How the Scales are Structured

example score
47/80
Fully Functioning Person Level (FFPL)
Measures the degree of personal potential realization, inner harmony, openness to experience, and capacity for self-regulation in line with Rogers’ fully functioning person concept.
Developing
Moderate
High
049: Developing | 5064: Moderate | 6580: High
A score of 47 falls in the Developing range, suggesting emerging openness and self-acceptance with some remaining constraints in adaptation and realizing personal capabilities.
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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Therapy and counseling clients
44%OF USERS
People in ongoing counseling or psychotherapy take it to track changes in openness, self-acceptance, and autonomy over time.
Coaching and training participants
33%OF USERS
Participants after coaching or personal development trainings use it for a quick snapshot of growth and integration of new skills.
Person-centered practitioners
23%OF USERS
Psychologists, counselors, and coaches use it to monitor client progress and evaluate how effective their person-centered work has been.
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
Benchmarking

See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Level of a fully functioning person (Loaffp)
Level of a fully functioning person (Loaffp)
Average
56.9
Normal range
45.668.2
min.
0
max.
80
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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SAMPLE QUESTIONS

Example Questions From the Test

Please read each statement and consider how often it has been true for you during the past month. Then select the response option that best matches your experience. There are no right or wrong answers; only what is true for you personally is important.
    • Never
    • Rarely
    • Sometimes
    • Often
    • Most of the time
    • Never
    • Rarely
    • Sometimes
    • Often
    • Most of the time
    • Never
    • Rarely
    • Sometimes
    • Often
    • Most of the time
WHAT THE TEST MEASURES
About This Assessment
Stratclide Questionnaire, SI-22 Test

Strathclyde Inventory (SI-22) Test - Symptoms and Signs

existential psychology
self-actualization

This brief self-report measure is designed to support a rapid appraisal of personality development within a person-centered framework. The Strathclyde Inventory (SI-22) is intended to characterize growth-oriented change rather than to screen for psychopathology.

The instrument contains 22 items and typically takes about 5 minutes to complete. Item content is commonly aligned with person-centered constructs such as openness to experience, self-acceptance, and autonomy, and may be used to track perceived change over time in counseling or related settings.

Scoring yields indices that can be used to summarize current functioning and to monitor shifts following interventions or supportive experiences. The Strathclyde Inventory (SI-22) is attributed to J. C. Nunnally and I. H. Bernstein.

Author: I. H. Bernstein, J. C. Nunnally
Literature: John, O. P., Donahue, E. M., & Kentle, R. L. The Big Five Inventory—Versions 4a and 54. University of California, Berkeley, Institute of Personality and Social Research. 1991.; DeVellis, R. F. Scale development: Theory and applications. SAGE. 2012.; Zech, E., Brison, C., Elliott, R., Rodgers, B., & Cornelius-White, J. Measuring Rogers' conception of personality development: Validation of the Strathclyde Inventory – French version. Person-Centered & Experiential Psychotherapies. 2018.
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