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									FACE EMOTION PARADIGM
SCRIPT INFO

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 11-11-2013
last updated: 06-02-2016 by K.Borchert (katjab@millisecond.com) for Millisecond Software LLC

Copyright © 06-02-2016 Millisecond Software


BACKGROUND INFO

											*Purpose*
This script implements a Face Emotion Paradigm as described in:

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.


											  *Task*
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


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

(1) Raw data file: 'FaceEmotion_raw*.iqdat' (a separate file for each participant)

build:							Inquisit build
computer.platform:				the platform the script was run on
date, time, subject, group:		date and time script was run with the current subject/groupnumber 
/group:							1 = run with half design set 1
								2 = run with half design set 2
blockcode, blocknum:			the name and number of the current block
trialcode, trialnum: 			the name and number of the currently recorded trial
								(Note: not all trials that are run might record data) 
/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)

script.startdate:				date script was run
script.starttime:				time script was started
script.subjectid:				subject id number
script.groupid:					group id number
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; 1 = script was completed (all conditions run)
/prop_emotion_accuracy: 		proportion of emotion profile responses that rated the target emotion the highest
									(across all emotions; not counting neutral)

EXPERIMENTAL SET-UP:

(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)

STIMULI:
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.

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



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:

/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


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