Prison Locus of Control Scale (PLOC)
Measures the degree to which incarcerated individuals attribute control over their jail experiences to internal factors versus external institutional forces.
Scale Development & Technical Details
Scale Overview
The Prison Locus of Control Scale (PLOC) was developed by Anna Cutlip (2002). It is designed to measure Prison Locus of Control. The scale is intended for use with Incarcerated individuals.
Scale Structure
This instrument consists of 35 items organized into 2 factors/subscales: Internal Locus of Control, External Locus of Control.
| Factor / Subscale | Items | N |
|---|---|---|
| Internal Locus of Control | 1,12,13,15,16,17,18,19,21,22,23,24,28,31,32,34 | 16 |
| External Locus of Control | 2,3,4,5,6,7,8,9,10,11,14,20,25,26,27,29,30,33,35 | 19 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: 1 = Agree, 2 = 2, 3 = 3, 4 = 4, 5 = 5, 6 = 6, 7 = 7, 8 = 8, 9 = 9, 10 = Disagree.
The scale includes 16 reverse-scored items to reduce acquiescence bias.
Scoring
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Total scores range from 35 to 350. Interpretation guidelines:
- Strongly External Locus of Control (High Agreement with External Items): 35 – 140
- Moderate / Mixed Locus of Control: 141 – 245
- Strongly Internal Locus of Control (High Disagreement with External Items): 246 – 350
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Not specified in source text.
Administration
The scale is self-administered and typically takes approximately 10 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.