Return to the Subtest 2: Affect Discrimination page
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								*Comprehensive Affective Testing System - Reduced (CATS-R)*
								*Subtest2: AFFECT DISCRIMINATION*
								*Mouse or Touch Input*
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 09-29-2020
last updated:  10-30-2020 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 10-30-2020 Millisecond Software

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BACKGROUND INFO 	
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This script implements subtest2 'AFFECT DISCRIMINATION' of 
the Comprehensive Affective Testing System - Reduced (CATS-R).

The CATS and CATS-R were created by:
Sarah G. Schaffer, PhD
Karen B. Froming, PhD
Amanda L. Gregory, PhD
C. Michael Levy, PhD
Paul Ekman, PhD


Reference for Means and Standard Deviations used to calculate z-scores:

Emotion Processing: The Comprehensive Affective Testing System. User Manual.
Published 2006 by Psychology Software Inc


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TASK DESCRIPTION	
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Subtest2: AFFECT DISCRIMINATION

Participants are presented 12 pairs of vertically stacked faces and have to decide whether the faces
are of the same person of whether the faces are of different people.
The two faces always come from the same actor but the emotion the actor is showing may or may not be
the same (i.e., Happy, Sad, Angry, Frightened, Surprised, Disgusted, or Neutral)

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DURATION 
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the default set-up of the script takes appr. 2 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: 'catsr_subtest2_raw*.iqdat' (a separate file for each participant)*


build:								The specific Inquisit version used (the 'build') that was run
computer.platform:					the platform the script was run on (win/mac/ios/android)
date, time, 						date and time script was run 
subject, group, 					with the current subject/groupnumber
session:							with the current session id

subtest:							"subtest2"									

//if the subtest is run via a batch script that collects gender/age/taskOrder information:									
age:								the age of the participant 								
gender:								Female; Male; Other
taskOrder:							the selected task order		


blockcode, blocknum:				the name and number of the current block (built-in Inquisit variable)
trialcode, trialnum: 				the name and number of the currently recorded trial (built-in Inquisit variable)
										Note: trialnum is a built-in Inquisit variable; it counts all trials run; even those
										that do not store data to the data file. 
										
/trialCount:						trial counter																				
/subtest2_testitem:					the index of the selected image 
/testitem:							the presented image

/correctResponse:					the dedicated correct response: 
									1 = same
									2 = different									
									
/selectedResponse:					'same' or 'different'


correct:							accuracy of response: 1 = correct response; 0 = otherwise					 
/RT:								cumulative response latency: measured from onset of image until 'nextButton' is pressed


(2) Summary data file: 'catsr_subtest2_summary*.iqdat' (a separate file for each participant)*

inquisit.build:						the Inquisit build/version run
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)
									

subtest:							"subtest2"									

//if the subtest is run via a batch script that collects gender/age/taskOrder information:									
age:								the age of the participant 								
gender:								Female; Male; Other
taskOrder:							the selected task order								
																	
									
T2_rawscore:					the number of correct responses in subtest2	
T2_rawscore_corrected:			the number of correct responses in subtest2, corrected
								(Note: in this subtest rawscores get corrected for males over 39 by adding +1 to the rawscore)
								
T2_zscore:						the z-score for the corrected T2_rawscore	
								(Note: z-scores get calculated using the overall mean and standard deviation)
									
T2_propCorrect:					proportion correct responses in subtest2
T2_RT:							mean response time (in ms) in subtest2; measured from onset of image until 'nextButton' is pressed									
T2_corrRT:						mean response time (in ms) of CORRECT responses in subtest2; measured from onset of image until 'nextButton' is pressed							
	
+ results from individual questions
	
* separate data files: to change to one data file for all participants (on Inquisit Lab only), go to section
"DATA" and follow further instructions

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EXPERIMENTAL SET-UP 
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1 Testblock of 12 trials
- 6 trials with identical faces
- 6 trials different faces
The order of the images is predetermined.

Participants can select button 'same' or 'different'. Responses can be changed until 'next' is pressed.
If button 'repeat' is pressed, nothing happens in this script as the images are still on screen.

Note: By setting parameters.showAdvanceButton to true, a '?'-button appears in the upper right corner.
If pressed, the next scheduled test item is skipped.

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STIMULI
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can be edited under section Editable Stimuli

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INSTRUCTIONS 
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provided by Millisecond Software - can be edited under section Editable Instructions
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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: