User Manual for Inquisit's Emotional Memory Task


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								Emotional Memory Task
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 05-06-2022
last updated:  05-20-2022 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 05-20-2022 Millisecond Software

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BACKGROUND INFO 	
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This script implements Millisecond Software's version of the Emotional Memory Task described by Daming et al (2021).
The task tests participants' recognition memory of emotionally charged images that they previously rated.
This version of the Emotional Memory Task uses mouse/touch input but the task could be easily converted
to a keyboard version.

Reference:											
Daming Mo, Xin Li, Shuwen Hu, Pengfei Guo, Shuai Liu, Feng Geng, Xiaomei Cao, Binbin Chen, Hui Zhong (2021)
Somatization Symptoms Regulate Emotional Memory Bias in Adolescents With Major Depressive Disorder.
Frontiers in Psychiatry, 12, 1-10.
https://www.frontiersin.org/article/10.3389/fpsyt.2021.656198  
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TASK DESCRIPTION	
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The Emotional Memory Task consists of 2 phases.

PhaseA is the unintentional learning phase during which participants get familiarized with a selection
of positive, negative and neutral images and are asked to rate them in regard to their valence on a 
scale of 1-9. Participants are not explicitly told to memorize the images.

PhaseB is the recognition phase during which participants are presented with the 'old' images from
phaseA as well as 'new' images they did not see during the rating phase. The images are presented in
random order and participants are asked to indicate whether they have seen the images before (yes/no answer).

Daming et al (2021) used a delay of 72 hours in between phaseA and phaseB.

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DURATION 
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Phase A takes approximately 5 minutes
Phase B takes approximately 7 minutes

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

(1) Raw data file: 'emotionalmemorytask_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:					with the current subject id
group: 						with the current group id
session:					with the current session id

(parameter) phaseSetting	1 = learning phase only
							2 = test phase only
							3 = learning phase -> break -> test phase

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. 
								
phase:						current phase of the study: "A" (learning/rating) vs. "B" (recognition) 
trialCount:					the trialCounte for the current phase
category:					valence of image: "negative" vs. "neutral" vs. "positive"
image:						the current image filename
itemnumber:					the itemnumber of the currently presented image
presentationPhase:			the phase during which the image was first presented: "A" (=old image) vs. "B" (=new image)

corrRsp:					the correct response

//custom DVs:
selectedRsp:				the currently given response by participant
							phaseA: the rating 1-9
							phaseB: 'yes' vs. 'no'
							
RT:							the response latency of the current response (in ms)
							phaseA: the time it took to submit the rating; measured from onset of rating scale
							phaseB: the time it took to select yes or no button
								
								
//built-in DVs: note, they currently do not contain useful information for phaseA as phaseA results
are only stored at the very end of the rating trial
response:					the response of participant (scancode of response button)
correct:					correctness of response (1 = correct, 0 = error)
latency:					response latency (in ms); measured from:


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

inquisit.version:			Inquisit version run
computer.platform:			the platform the script was run on (win/mac/ios/android)
startdate:					date script was run
starttime:					time script was started
subjectid:					assigned subject id number
groupid:					assigned group id number
sessionid:					assigned session id number
elapsedtime:				time it took to run script (in ms); measured from onset to offset of script
completed:					0 = script was not completed (prematurely aborted); 
							1 = script was completed (all conditions run)

(parameter) phaseSetting	1 = learning phase only
							2 = test phase only
							3 = learning phase -> break -> test phase

//PhaseA: Ratings (if applicable); scale: 1-9
meanRating_negative:		the mean rating for negative images				
meanRating_neutral:			the mean rating for neutral images
meanRating_positive:		the mean rating for positive images

//PhaseB: Recognition (if applicable)
propCorrect_overall:		proportion correctly categorized images as 'new' and 'old' across valence conditions 
meanCorrRT_overall:			mean response time for correctly categorized images as 'new' and 'old' across valence conditions 

propCorrect_negative:		proportion correctly categorized images as 'new' and 'old' for 'negative' images
meanCorrRT_negative:		mean response time for correctly categorized images as 'new' and 'old' for 'negative' images 

propCorrect_neutral:		proportion correctly categorized images as 'new' and 'old' for 'neutral' images
meanCorrRT_neutral:			mean response time for correctly categorized images as 'new' and 'old' for 'neutral' images 

propCorrect_positive:		proportion correctly categorized images as 'new' and 'old' for 'positive' images
meanCorrRT_positive:		mean response time for correctly categorized images as 'new' and 'old' for 'positive' images 		
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EXPERIMENTAL SET-UP 
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This script provides the option to run only 'PhaseA', only 'PhaseB' or both phases one after the other 
separated by a  break/delay. Check section Editable Parameters for more information.
By separating PhaseA and PhaseB, longer delays - such as 72hours (see Daming et al, 2021) can
be run using the same script.

Phase A: presents 45 trials (15 negative, 15 neutral, 15 positive)
Each trial presents the image file for 3000ms (editable parameter) and then presents a visual
rating scale (1-9) for as long as participants need to submit their valence rating of the image.
A brief blank screen is presented before each image.

Note: Phase A presents the unintentional learning phase of the images. Participants are not asked to memorize
the images but simply to rate them.

Delay/Break: the delay/break period is only run IF parameters.phaseSetting = 3 (see section Editable Parameters)
By default, the script presents a delay trial for 10 minutes. After the delay period is over,
participants can continue with the task by pressing a 'Continue' button.

Phase B: presents 90 trials 
(45 old images from phaseA and 45 new ones; 1/3 of the images are negative; 1/3 are neutral; 1/3 are positive)
Each trial presents the image file for 3000ms (editable parameter) and then presents a 
YES and NO button to indicate whether the image was seen during the rating phase.
A brief blank screen is presented before each image.

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STIMULI
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The images are provided by Millisecond Software and are taken from the IAPS database.
They are meant for demonstration purposes only.
The images can be easily replaced under section Editable Stimuli.
 
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INSTRUCTIONS 
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provided by Millisecond Software - can be edited under section 'Editable Instructions'.
The provided instructions contain some misdirections in order to minimize attentional learning
of the images during the rating-learning phase.
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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: