User Manual for Inquisit's Eysenck Personality Questionnaire - Brief Version (EPQ-BV)


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									EYSENCK PERSONALITY QUESTIONNAIRE BRIEF VERSION (EPQ-BV)
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 08-09-2016
last updated:  02-22-2022 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 02-22-2022 Millisecond Software
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BACKGROUND INFO 	
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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.

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OVERVIEW
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24 yes/no questions: 12 questions on each of 2 scales (Extraversion, Neuroticism)											  

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DURATION 
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the default set-up of the script takes appr. 1 minute to complete

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DATA FILE INFORMATION 
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The default data stored in the data files are:

(1) Raw data file: 'epq_bv.iqdat'

date, time:						date and time script was run with the current group/subjectnumber 
subject, group, session:	  	with the current subject/groupnumber/session id
build:							the Inquisit build 

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)
								
								
(2) Summary data file: 'epq_bv_summary.iqdat' (Inquisit Lab: one data file per participant)

inquisit.version: 						Inquisit version run
computer.platform:					the platform the script was run on (win/mac/ios/android)
startdate:							date script was run
starttime:							time script was started
subjectid:							assigned subject id number
groupid:							assigned group id number
sessionid:							assigned session id number
elapsedtime:						time it took to run script (in ms); measured from onset to offset of script
completed:							0 = script was not completed (prematurely aborted); 
									1 = script was completed (all conditions run)

radiobuttons.gender.response:		response to gender question
dropdown.age.response:				response to age question
age:								the assigned age category

Notes: 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"
z_E:					calculated z-score of the Extraversion score (based on data provided by Eysenck et al, 1985)
E_percentile:			z-score percentile of the Extraversion score (based on data provided by Eysenck et al, 1985)
Neuroticism: 			score on the subscale "Neuroticism"
z_N:					calculated z-score of the Neuroticism score (based on data provided by Eysenck et al, 1985)
N_percentile:			z-score percentile of the Neuroticism score (based on data provided by Eysenck et al, 1985)

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QUESTIONNAIRE SET-UP/SCORING/NORMS
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24 yes/no questions: 12 questions on each of 2 scales (Extraversion, Neuroticism)	

Scoring:
yes = 1 point, No = 0 point (Reversed where indicated, Satu, 2005)

NORMS
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)
Notes: 
* 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

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INSTRUCTIONS 
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slightly altered from Eysenck et al (1985) - edit under section Editable Parameters

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EDITABLE CODE 
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check below for (relatively) easily editable parameters, stimuli, instructions etc. 
Keep in mind that you can use this script as a template and therefore always "mess" with the entire code 
to further customize your experiment.

The parameters you can change are:

/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