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									Dot Estimation Task

last updated: 06-15-2018 by K.Borchert ( for Millisecond Software LLC
Script Copyright © 06-15-2018 Millisecond Software


This script implements a Dot Estimation Task similarly to the one described in:

Mussweiler, T., Gabriel, S., & Bodenhausen, G.V. (2000). Shifting Social Identities as a Strategy for Deflecting
Threatening Social Comparisons. Journal of Personality and Social Psychology, 79, 398-409.

Participants view several slides that contain a varying number of dots for 1000s (not enough time to count all the dots)
and are subsequently asked to estimate the number of dots.
Based on their preassigned groups, they are told at the end that they are either "underestimators" or "overestimators"
regardless of their actual estimations.

The default data stored in the data files are:

(1) Raw data file: 'DotEstimationTask_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 
/ estimatortype:				between group condition "Underestimator"/"Overestimator"
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) 
stimulusitem:					the presented stimuli in order of trial presentation
response:						the participant's response
correct:						the correctness of the response
latency: 						the response latency (in ms)

(2) Summary data file: 'DotEstimationTask_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)
/ estimatortype:				between group condition "Underestimator"/"Overestimator"

* assigns participants to "overestimator" and "underestimator" condition via groupnumber
(odd -> underestimator; even -> overestimator)
* presents 11 slides of dots in sequence for 1000ms (default)
* presents feedback at the end according to assigned group independent of actual estimation

see section Editable Stimuli

see section Editable Instructions

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:

	pretrialpause:		Adjustable delay in milliseconds. Change as needed.
	dotduration:		Display duration for the dot patterns in milliseconds.

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