Scale Overview
The Multidimensional Internal-External Locus of Control Scale – Multidimensional I-E Scale was developed by Patricia Gurin, Gerald Gurin, Rosina C. Lao, Muriel Beattie (1969). It is designed to measure Locus of Control. The scale is intended for use with Adults and adolescents.
Scale Structure
This instrument consists of 39 items organized into 4 factors/subscales: Control Ideology, Personal Control, System Modifiability, Unclassified.
| Factor / Subscale |
Items |
N |
| Control Ideology |
1,2,3,4,5,6,7,8,9,10,11,12,13 |
13 |
| Personal Control |
14,15,16,17,18 |
5 |
| System Modifiability |
19,20,21,22,23,24,25,26,27,28,29,30,31,32 |
14 |
| Unclassified |
33,34,35,36,37,38,39 |
7 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: a = Statement A, b = Statement B.
Scoring
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Total scores range from 0 to 39. Interpretation guidelines:
- Scores represent the sum of external or internal choices depending on the scoring key used for specific subscales.: 0 – 39
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Varies by subscale (typically alpha 0.60 to 0.75).
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.