| Category | Details |
|---|---|
| Description | The Katz Adjustment Scale–Form R4 (Katz & Lyerly, 1963) is an inventory designed to assess the adjustment and social behavior of pre-psychotic and ex-hospital patients in the community. This scale relies on both the patient and a relative’s perspectives, where the relative acts as a direct reporter. The tool was designed to classify patients based on their behavior before hospitalization and in the community follow-up. The scales are highly discriminative, capable of closely approximating expert clinical judgment. |
| Author | Katz, Martin M.; Lyerly, Samuel B. |
| Affiliation | Katz, Martin M. – National Institute of Mental Health, Psychopharmacology Service Center Lyerly, Samuel B. – Human Ecology Fund |
| Purpose | To objectively assess the adjustment and social behavior of pre-psychotic and ex-hospital patients in the community. |
| Construct | Adjustment |
| Instrument Type | Rating Scale |
| Format | Paper |
| Administration Method | Paper |
| Test Items Available | No (To access the test items, contact the publisher.) |
| Number of Items | The relative’s rating scales consist of 205 items, while the self-rating scales consist of 133 items. |
| Reliability | Internal consistency reliabilities (Cronbach’s alpha) for various clusters: Belligerence (.73), Verbal Expansiveness (.73), Negativism (.79), Helplessness (.63), Suspiciousness (.84), Anxiety (.77), Withdrawal (.72), General Psychopathology (.87), Nervousness (.61), Bizarreness (.71), Hyperactivity (.64). |
| Validity | Concurrent validity: The relative’s general estimate of the patient’s psychopathology level aligns well with clinical judgment. Relatives can distinguish between well-adjusted and poorly-adjusted groups. Self-report inventories also discriminate between groups, but not as well as the relative-report measure. |
| Factor Analysis | No factor analysis indicated. |
| Test Methodology | Test Validity; Concurrent Validity; Test Reliability; Internal Consistency |
| Age Group | Adulthood (18 years and older); Young Adulthood (18-29 years); Thirties (30-39 years); Middle Age (40-64 years) |
| Population Group | Human; Male; Female |
| Population Details | Location: United States Sample: Psychiatric patients |
| Keywords | Factor Analysis; Katz Adjustment Scale–Form R4; Psychoticism; Test Development; Psychometric Properties |
| Index Terms | Factor Analysis; Psychoticism; Test Construction; Test Reliability; Test Validity |
| Reference | Katz, M. M., & Lyerly, S. B. (1963). Methods for measuring adjustment and social behavior in the community: I. Rationale, description, discriminative validity and scale development. Psychological Reports, 13(2), 503–535. https://doi.org/10.2466/pr0.1963.13.2.503 |
Cite this article
Mohammed looti (2026). Katz Adjustment Scale–Form R4. PSYCHOLOGICAL SCALES. Retrieved from https://scales.arabpsychology.com/s/katz-adjustment-scale-form-r4/
Mohammed looti. "Katz Adjustment Scale–Form R4." PSYCHOLOGICAL SCALES, 4 Apr. 2026, https://scales.arabpsychology.com/s/katz-adjustment-scale-form-r4/.
Mohammed looti. "Katz Adjustment Scale–Form R4." PSYCHOLOGICAL SCALES, 2026. https://scales.arabpsychology.com/s/katz-adjustment-scale-form-r4/.
Mohammed looti (2026) 'Katz Adjustment Scale–Form R4', PSYCHOLOGICAL SCALES. Available at: https://scales.arabpsychology.com/s/katz-adjustment-scale-form-r4/.
[1] Mohammed looti, "Katz Adjustment Scale–Form R4," PSYCHOLOGICAL SCALES, vol. X, no. Y, ص Z-Z, April, 2026.
Mohammed looti. Katz Adjustment Scale–Form R4. PSYCHOLOGICAL SCALES. 2026;vol(issue):pages.