Multidimensional Internal-External Locus of Control Scale (Multidimensional I-E Scale)
Measures individual differences in locus of control across multiple dimensions, including personal control, control ideology, and system modifiability.
Scale Development & Technical Details
Scale Overview
The Multidimensional Internal-External Locus of Control Scale (Multidimensional I-E Scale) was developed by Patricia Gurin, Gerald Gurin, Rosina C. Lao, and Muriel Beattie (1969). It is designed to measure Internal-External Locus of Control. The scale is intended for use with Adults and youth.
Scale Structure
This instrument consists of 39 items organized into 4 factors/subscales: Control Ideology, Personal Control, System Modifiability, Unfactored Items.
| 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 |
| Unfactored Items | 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:
- Low External Locus of Control (High Internal Control): 0 – 13
- Moderate External Locus of Control: 14 – 26
- High External Locus of Control: 27 – 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 ranges from .60 to .80).
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.