Eysenck Personality Questionnaire-Revised – EPQ-R
A 100-item self-report questionnaire designed to measure three major dimensions of personality: Extraversion, Neuroticism, and Psychoticism, alongside a Lie scale to detect social desirability bias.
Scale Development & Technical Details
Scale Overview
The Eysenck Personality Questionnaire-Revised – EPQ-R was developed by Hans J. Eysenck, Sybil B. G. Eysenck, Paul A. Barrett (1985). It is designed to measure Personality (Extraversion, Neuroticism, Psychoticism, Social Desirability). The scale is intended for use with Adults.
Scale Structure
This instrument consists of 100 items organized into 4 factors/subscales: Psychoticism, Extraversion, Neuroticism, Lie Scale.
| Factor / Subscale | Items | N |
|---|---|---|
| Psychoticism | 2,5,7,9,12,14,18,21,25,29,30,34,37,41,42,48,50,54,56,59,64,68,73,75,79,81,85,88,91,95,96,99 | 32 |
| Extraversion | 1,6,11,16,20,24,28,33,36,40,45,47,51,55,58,61,63,67,69,72,78,90,94 | 23 |
| Neuroticism | 3,8,13,17,22,26,31,35,38,43,46,52,60,65,70,74,76,80,83,84,87,92,97,100 | 24 |
| Lie Scale | 4,10,15,19,23,27,32,39,44,49,53,57,62,66,71,77,82,86,89,93,98 | 21 |
Response Format
Respondents rate each item using a dichotomous Yes/No format.
The scale includes 37 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 0 to 100. Interpretation guidelines:
- Scores are interpreted individually per subscale using normative data.: 0 – 100
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Alpha ranges: E (0.85-0.90), N (0.85-0.88), P (0.76-0.78), L (0.79-0.82).
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.