Symptom Checklist-90-Revised – SCL-90-R
A self-report psychometric instrument designed to evaluate a broad range of psychological problems and symptoms of psychopathology.
Scale Development & Technical Details
Scale Overview
The Symptom Checklist-90-Revised – SCL-90-R was developed by Leonard R. Derogatis (1973). It is designed to measure Psychological distress and psychopathology. The scale is intended for use with Adults and adolescents (clinical and non-clinical).
Scale Structure
This instrument consists of 90 items organized into 10 factors/subscales: Somatization, Obsessive-Compulsive, Interpersonal Sensitivity, Depression, Anxiety, Hostility, Phobic Anxiety, Paranoid Ideation, Psychoticism, Additional Items.
| Factor / Subscale | Items | N |
|---|---|---|
| Somatization | 1,4,12,27,40,42,48,49,52,53,56,58 | 12 |
| Obsessive-Compulsive | 3,9,10,28,38,45,46,51,55,65 | 10 |
| Interpersonal Sensitivity | 6,21,34,36,37,41,61,69,73 | 9 |
| Depression | 5,14,15,20,22,26,29,30,31,32,54,71,79 | 13 |
| Anxiety | 2,17,23,33,39,57,72,78,80,86 | 10 |
| Hostility | 11,24,63,67,74,81 | 6 |
| Phobic Anxiety | 13,25,47,50,70,75,82 | 7 |
| Paranoid Ideation | 8,18,43,68,76,83 | 6 |
| Psychoticism | 7,16,35,62,77,84,85,87,88,90 | 10 |
| Additional Items | 19,44,59,60,64,66,89 | 7 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: 0 = Not at all, 1 = A little bit, 2 = Moderately, 3 = Quite a bit, 4 = Extremely.
Scoring
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of High internal consistency (Cronbach's alpha typically 0.77 to 0.90 across subscales).
Administration
The scale is self-administered and typically takes approximately 15 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.