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									INATTENTIONAL BLINDNESS- Paper & Pencil Input
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Script Author: An Raes
last updated:  03-13-2020 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Millisecond Software thanks An Raes for sharing this script!

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BACKGROUND INFO 	
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This script runs an Inattentional Blindness Task adapted from:

Most, S. B., Simons, D. J., Scholl, B. J., Jimenez, R., Clifford, E., & Chabris, C. F. (2001). 
How not to be seen: The contribution of similarity and selective ignoring to sustained 
inattentional blindness. Psychological Science, 12, 9-17. 

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TASK DESCRIPTION	
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Participants view several videos that depict members of 4 spider-like figures in white and black floating around
in a field. The task is to count how often a certain kind of figure bumps into the walls.
At some point during the experiment, a black spider 'walks' through the field from right to left.
Note: in this script, no responses are colleced by the computer 
(see script inattentionalblindness_compinput.iqx for an alternative)
											  
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DURATION 
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the default set-up of the script takes appr. 5 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: 'inattentionalblindness_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 such as feedback trials
										
stimulusitem:					the presented stimuli in order of trial presentation
response:						the participant's response (scancode of response buttons)
latency: 						the response latency (in ms)

(2) Summary data file: 'inattentionalblindness__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)

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EXPERIMENTAL SET-UP 
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2 trials that present videos without target
2 trials that present video with a target (here: spider) without target alert 
-> however, instructions at the end ask whether something unusual was noticed
1 trial that presents video with a target with explicit target alert
STIMULI
see section Editable Stimuli

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INSTRUCTIONS 
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see 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.