Mini International Personality Item Pool - IPIP

Technical Manual

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond

Created: January 28, 2023

Last Modified: January 28, 2023 by K. Borchert (katjab@millisecond.com), Millisecond

Script Copyright © Millisecond Software, LLC

Background

This script implements Millisecond's computerized version of the MiniIPIP, a short measure of the Big Five factors of personality introduced by Donnellan et al (2006). The MiniIPIP is a 20 question survey using a subset of the IPIP (International Personality Item Pool) items used by the 50-item IPIP representation of the Big-Five lexical markers (Goldberg, 1992).

The IPIP data base is in the open domain as are all measures/scales using them. No permission is needed to use any of these scales (https://ipip.ori.org/newPermission.htm).

References

Donnellan, M. B., Oswald, F. L., Baird, B. M., & Lucas, R. E. (2006). The Mini-IPIP scales: Tiny-yet-effective measures of the Big Five factors of personality. Psychological Assessment, 18, 192-203.

The reference for the original lexical scales on which the IPIP lexical Big-Five inventory is based Goldberg, L. R. (1992). The development of markers for the Big-Five factor structure. Psychological Assessment, 4, 26-42.

IPIP item pool and general information about IPIP surveys: https://ipip.ori.org

Duration

2 minute

Overview

self-report measure consisting of 20 5-point Likert Scale questions using 4 IPIP items each assessing the big 5
personality factors (Extraversion, Agreeableness, Conscientiousness, Neuroticism, Imagination)

Summary Data

File Name: mini_ipip_summary*.iqdat

Data Fields

NameDescription
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
miniIPIPExtraversion Sum of q1E,qR6E,q11E,q16RE, Range: 4-20 => higher scores imply higher Extraversion
miniIPIPAgreeableness Sum of q2A,q7RA,q12A,q17RA, Range: 4-20 => higher scores imply greater Agreeableness
miniIPIPConscientiousness Sum of q3C,q8RC,q13C,q18RC, Range: 4-20 => higher scores imply greater Conscientiousness
miniIPIPNeuroticism Sum of q4N,q9RN,q14N,q19RN, Range: 4-20 => higher scores imply higher degree of Neuroticism (less Emotional Stability)
miniIPIPImagination Sum of q5I,q10RI,q15RI,q20RI, Range: 4-20 => higher scores imply higher level of Imagination
+ individual responses

Raw Data

File Name: mini_ipip.iqdat

Data Fields

NameDescription
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 (very inaccurate) - 5 (very accurate)
R: reversed coded questions
E = Extraversion
A = Agreeableness
C = Conscientiousness
N = Neuroticism
I = Imagination
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)