Return to the Buss Perry Aggression Questionnaire page
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									*Buss Perry Aggression Questionnaire*
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 12-17-2020
last updated: 12-21-2020 by K.Borchert (katjab@millisecond.com) for Millisecond Software LLC

Script Copyright © 12-21-2020 Millisecond Software

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BACKGROUND INFO 	
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This script implements the Buss Perry Aggression Questionnaire.

Reference
Buss, A.H. and Perry, M.P. (1992). The Aggression Questionnaire. 
Journal of Personality and Social Psychology, 63, 452-459.

Note: 
"No permission is needed if the questionnaire is used for research purposes."
(Buss & Perry, 1992, p. 453)
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OVERVIEW
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29 5-point Likert style questions on 4 scales:
Physical Aggression, Verbal Aggression, Anger, and Hostility.

As per recommendation by Buss & Perry (1992, p.453) this script presents the questions in random order
(randomized anew for each run). To change presentation go to section EDITABLE PARAMETER.

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DURATION 
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the default set-up of the script takes appr. 2.5 minutes 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: 'bpaq.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 (extremely uncharacteristic) to 5 (extremely characteristic)
									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: 'bpaq_summary.iqdat' (Inquisit Lab: one data file per participant)

computer.platform:					the platform the script was run on (win/mac/ios/android)
inquisit.build:						the version/build of Inquisit
script.startdate:					date script was run
script.starttime:					time script was started
script.subjectid:					assigned subject id number
script.groupid:						assigned group id number
script.sessionid:					assigned session id number
script.elapsedtime:					time it took to run script (in ms); measured from onset to offset of script
script.completed:					0 = script was not completed (prematurely aborted); 
									1 = script was completed (all conditions run)
																										
/bpaq_numberMissingItems:				the number of questions that have not been answered 
Note: by default settings, all questions are required to be answered. However, that setting can be changed.
If default setting is changed, the above variable can be used as a flag.

/BPAQ_total:						the sum of all responses (Range: 29 - 145)
/physicalAggression:				the sum of all responses to Physical Aggression (PA) questions (Range: 9-45)
/verbalAggression, :				the sum of all responses to Verbal Aggression (VA) questions (Range: 5-25) 
/Anger:								the sum of all responses to Anger (A) questions (Range: 7-35)  
/Hostility:							the sum of all responses to Hostility (H) questions (Range: 8-40) 									
+ z-scores and percentiles if applicable	
	
+ individual responses to all 29 questions									
									
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QUESTIONNAIRE SET-UP & SCORING
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29 5-point Likert style questions on 4 scales:
Physical Aggression, Verbal Aggression, Anger, and Hostility.
As per recommendation by Buss & Perry (1992, p.453), the order of the questions was randomized for this script.

Scoring:
Each question is scored on a scale 1 (extremely uncharacteristic) to 5 (extremely characteristic)
(Note: two questions are automatically reversed-scored).
A subscale score is computed for each of the 4 subscales based on the sum of the individual responses.
The Total BPAQ score is based on the sum of all responses.

Norms are calculated (if gender is provided) by default based on data (means and standard deviations)
provided by Buss & Perry (1992, p.455, table 3). 
Check out section Editable Parameters to turn off the demographic questions (and norm calculations).

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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.