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									EYSENCK PERSONALITY QUESTIONNAIRE BRIEF VERSION (EPQ-BV)
SCRIPT INFO

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 08-09-2016
last updated:  08-16-2016 by K.Borchert for Millisecond Software LLC

Script Copyright ©  08-16-2016 Millisecond Software


BACKGROUND INFO

											*Purpose*
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.


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


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

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

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

q*_response:					response given (in assigned values -> reversed scoring automatically taken into account)
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)

script.startdate:				date script was run
script.starttime:				time script was started
script.subjectid:				subject id number
script.groupid:					group id numberSatu
script.elapsedtime:				time it took to run script (in ms)
computer.platform:				the platform the script was run on
/completed:						0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run)

/gender:						response to gender question
/age:							response to age question

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)


QUESTIONNAIRE SET-UP
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

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

EDITABLE CODE:
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
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