Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond
Created: January 09, 2016
Last Modified: January 12, 2023 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
This script implements an electronic version of the Eysenck Personality Questionnaire Brief Version (EPQ-BV) originally published in:
Satu, P. (2005). The Eysenck Personality Questionnaire Brief Version: Factor Structure and Reliability. The Journal of Psychology, 139(6), 545–552.
Based on: Eysenck, S. B. G., Eysenck, H. J., & Barrett, P. (1985). A revised version of the psychoticism scale. Personality and Individual Differences. 6, 21-29.
Notes: Norms provided in this script are reported by Eysenck et al (1985) for the EPQR-S which contains an additional lie scale as well as as the Psychoticism scale. The questions for the Extraversion/Neuroticism scale are almost identical.
1 minute
24 yes/no questions: 12 questions on each of 2 scales (Extraversion, Neuroticism)
slightly altered from Eysenck et al (1985) - edit under section Editable Parameters
yes = 1 point, No = 0 point (Reversed where indicated, Satu, 2005)
z-scores and percentiles of the 4 subscores are calculated based on data provided by Eysenck et al (1985), p.24 (table 6)
for the EPQR-S (no separate norms reported by Satu, 2005)
• Norms for ages < 16 AND ages > 70 use the overall mean and standard deviation by default (no separate data provided for these age groups)
• Norms for gender = other: the female norms are used by default
• percentiles and z-score are only calculated if parameters.calculatePercentiles == true
File Name: epq_bv_summary.iqdat' (Inquisit Lab: one data file per participant)
| Name | Description |
|---|---|
| inquisit.version | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| startDate | Date the session was run |
| startTime | Time the session was run |
| subjectId | Participant ID |
| groupId | Group number |
| sessionId | Session number |
| elapsedTime | Session duration in ms |
| completed | 0 = Test was not completed 1 = Test was completed |
| radioButtons.gender.response | Response to gender question |
| dropdown.age.response | Response to age question |
| age | The assigned age category Norms use data reported for the EPQR_S by Eysenck et al (1985, p.24, table 6); no separate norms reported by Satu (2005) * Norms for ages < 16 AND ages > 70 use the overall mean and standard deviation by default (no separate data provided for these age groups) * Norms for gender = other: the female norms are used by default * percentiles and z-score are only calculated if parameters.calculatePercentiles == true |
| extraversion | Score on the subscale "Extraversion" |
| zE | Calculated z-score of the Extraversion score (based on data provided by Eysenck et al, 1985) |
| ePercentile | Z-score percentile of the Extraversion score (based on data provided by Eysenck et al, 1985) |
| neuroticism | Score on the subscale "Neuroticism" |
| zN | Calculated z-score of the Neuroticism score (based on data provided by Eysenck et al, 1985) |
| nPercentile | Z-score percentile of the Neuroticism score (based on data provided by Eysenck et al, 1985) |
File Name: epq_bv.iqdat
| Name | Description |
|---|---|
| date | Date the session was run |
| time | Time the session was run |
| subject, group, session | With the current subject/groupnumber/session id |
| build | Inquisit version number |
| q*_response | Response given (in assigned values) Scale: 1 (yes) - 0 (no) R = automatically reversed scored questions |
| q*_latency | How much time (in ms) the participant spent on the surveyPage with this particular question (the last time this particular surveyPage was visited) |
The procedure can be adjusted by setting the following parameters.
| Name | Description | Default |
|---|---|---|
| pageInstructions | The instructions that appear at the top of each surveyPage | |
| calculatePercentiles | True (default)= script automatically calculates the z-score and corresponding percentile based on Eysenck et al (1985), p.24 (table 6) (setting this parameter to true runs the demographic 'age' and 'gender' questions) false = script does not automatically calculate z-score and corresponding percentile |