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									FACE EMOTION PARADIGM
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 11-11-2013
last updated:  03-09-2020 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 03-09-2020 Millisecond Software

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BACKGROUND INFO 	
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This script implements a Face Emotion Paradigm; a task for Emotion Recognition of different
ethnic groups. The implemented procedure is based on:

Beaupre´, M.G., Hess, U. (2005). Cross-cultural emotion recognition among Canadian ethnic groups. 
Journal of Cross-Cultural Psychology 36, 355–370.

Note: this script runs with placeholder stimuli. To get access to the original stimuli, please
contact Dr. Ursula Hess directly.

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TASK DESCRIPTION	
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Participants are presented pictures of people with different facial expressions.
Afterwards they are asked to 
1) rate the facial expression on 10 emotion dimensions/profiles 
2) rate the likelihood of the daily occurrence of the presented facial expression

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DURATION 
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the default set-up of the script takes appr. 45 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: 'faceemotion_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
script.sessionid:					with the current session id

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.
																		
parameters.group:					1 = run with half design set 1
									2 = run with half design set 2								
																
emotion:							stores the current emotion (e.g. "anger")

ethnicity:							stores the ethnicity of the current encoder (default)
									1 = Subsaharan African
									2 = Chinese
									3 = French Canadian
									Note: not accurate for practice trials
									
gender:								stores the gender of the current encoder (default)
									1 = Female
									2 = Male
									Note: not accurate for practice trials
									
encoder:							stores the "itemnumber" of the current encoder (1-12)
intensity:							stores the current intensity level of the emotion
									Note: by default, this script runs only 1 intensity level
										
stimulusitem:						stores the current stimulus (picture)

emotion_accuracy:					1 = target category was rated the highest of all categories in the emotion profile task
									0 = otherwise

									Note: values.emotion_accuracy
									Beaupre´, M.G., Hess, U. (2005): "The level of accuracy was calculated
									from the intensity scales such that when the target scale received the highest score, 
									judgment was considered as accurate and a score of 1 was given; otherwise, a score of 0 was
									given." (p.359/360)
								
daily_occurence:					the selected probability that presented emotion is presented on a daily basis

slider.anger.response - 
slider.surprise.response:			the selected responses for the 10 questions of the emotion profile tasks


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

computer.platform:					the platform the script was run on (win/mac/ios/android)
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)

parameters.group:					1 = run with half design set 1
									2 = run with half design set 2
								
prop_emotion_accuracy: proportion of emotion profile responses that rated the target emotion the highest
									 (across all emotions; not counting neutral)
									 

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EXPERIMENTAL SET-UP 
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(A )Complete design:
3 encoder ethnicities (e.g. French Canadian, Subsaharan Africans, Chinese) x 2 genders x 6 emotions (anger, happiness, sadness, fear, disgust, shame)
x 4 encoders = 144 trials

Half design: the total set was broken down into 2 sets in Beaupre´& Hess (2005). Each set was made up of expressions by 2 males and 2 females from each cultural group (not 4).
=> 3 encoder ethnicities (French Canadian, Subsaharan Africans, Chinese) x 2 genders x 6 emotions (anger, happiness, sadness, fear, disgust, shame)
x 2 encoders = 72 trials
=> sets were counterbalanced between participants in Beaupre´ & Hess (2005).

!NOTE: this script implements only the half design. To run the complete design, dublicate the script with the second set of stimuli and set
Editable Parameters -> parameters.group = 2.

!NOTE: this script runs only 1 intensity level for each emotion. To add more intensity levels, go to section Editable Stimuli and follow
further instructions

!NOTE: this script runs 3 encoder ethnicities. To add more, follow instructions under section Editable Stimuli


(B) SET-UP
- 1 practice block with 2 emotion trials (e.g. encoders not of the current set)
- 1 test block: selects one of the 6 emotion trials randomly without replacement

Trial Sequence: 72 trials (half design)
Picture (default: 5000ms) -> Emotion Profile (order of questions is random) -> Daily Occurrence question -> Intertrial Interval (default: 0ms)

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STIMULI
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this script runs with placeholder stimuli. To get access to the original stimuli, please
contact Dr. Ursula Hess directly. The stimuli can be edited under section Editable Stimuli.

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INSTRUCTIONS 
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The instructions are not original and can be easily edited unter 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:
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:

/group:									1 = run with half design set 1
										2 = run with half design set 2

/pictureheight:							set the height (width will be adjusted automatically) of the pictures (default: 50% of screen height)

durations:
/stimulusduration:						set the duration of the stimuli (pictures) in ms (default: 5000ms)
/ITI:									set the duration of the intertrial interval in ms (default: 0ms)

/emotionprofile_instruction:			edit the instructions for the emotionprofile task
/dailyoccurrence_instruction:			edit the instructions for the daily-occurrence task