Return to the Reflexive Imagery Task (RIT) page
						
										Reflexive Imagery Task (RIT)
SCRIPT INFO

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 09-12-2017
last updated: 11-30-2017 by K.Borchert (katjab@millisecond.com) for Millisecond Software LLC

Script Copyright © 11-30-2017 Millisecond Software


BACKGROUND INFO 

											*Purpose*
This script implements a computerized Reflexive Imagery Task as described in:

Allen, A.K., Wilkins, K., Gazzaley, A. & Morsella, E. (2013). Conscious thoughts from reflex-like processes: A new
experimental paradigm for consciousness research. Consciousness and Cognition, 22, 1318–1331.

Note: this script implements only the condition in which participants are asked to suppress thinking of the 
name of the presented objects.

											  *Task*
Participants are presented images of objects for 4s (default) and are instructed to NOT think of the name
of the object. However, if they do think of the name, they are instructed to press the Spacebar immediately.
Optional: spacebar presses are followed by two likert questions about 'automaticity' of the thoughts and 
the 'urge to utter' the name of the object aloud.

By default, participants work on 20 practice problems and 20 test problems.
The length of practice/test is controlled by the number of provided practice/test problems and can
be adjusted by adding or deleting images from item.practiceTargets and item.testTargets under section
Editable Stimuli.



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

(1) Raw data file: 'rit_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 
/skipAutomaticityQuestion:		1 (true) = the automaticity likert question is skipped after a spacebar press (default)
								0 (false) = the automaticity likert question is presented after a spacebar press
/skipUrgeToUtterQuestion:		1 (true) = the urgeToUtter likert question is skipped after a spacebar press (default)
								0 (false) = the  urgeToUtter likert question is presented after a spacebar press
									Note: if selected the automaticity question always precedes the urgeToUtter question in this script
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; by default data is collected unless /recorddata = false is set for a particular trial/block) 
stimulusitem:					the first fixed-coded stimulusitem to appear in the trial
/image:							stores the presented image
response:						the participant's response
								trial.practice/trial.test: 57 = spacebar press
								likert trials = the rating (1-8)
latency: 						the response latency (in ms); measured from: onset of stimuli
/failedSuppression:				1 = failed suppression (spacebar was pressed); 0 = otherwise
/automaticityResponse:			the automaticity rating
/urgeToUtterResponse:			the urge to utter rating

(2) Summary data file: 'rit_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 (prematurely aborted); 1 = script was completed (all conditions run)
/skipAutomaticityQuestion:		1 (true) = the automaticity likert question is skipped after a spacebar press (default)
								0 (false) = the automaticity likert question is presented after a spacebar press
/skipUrgeToUtterQuestion:		1 (true) = the urgeToUtter likert question is skipped after a spacebar press (default)
								0 (false) = the  urgeToUtter likert question is presented after a spacebar press
									Note: if selected the automaticity question always precedes the urgeToUtter question in this script
/propFailedSuppression:			proportion failed suppressions during the test 
/meanRTfailedSuppression:		mean latency (in ms) of failed suppressions (measured at point of spacebar press)
/MeanAutomaticityRating:		mean automaticity rating (if applicable)
/MeanUrgeToUtterRating:			mean urge to utter rating (if applicable)

* separate data files: to change to one data file for all participants (on Inquisit Lab only), go to section
"DATA" and follow further instructions


EXPERIMENTAL SET-UP
1. Practice/Demo Block: runs as many trials as there are practice items (see section Editable Stimuli item.practiceTargets)- default: 20
* First practice trial presents instruction reminders on screen
* the 20 default stimuli are based on List A used by Allen et al (2013) with three substitutions
* the order of the stimuli is determined randomly

2. Test: runs as many trials as there are test items (see section Editable Stimuli item.testTargets)- default: 20
* a reminder to press  to start trial is presented after 5s
* the 20 default stimuli are based on List B used by Allen et al (2013) with three substitutions
* the order of the stimuli is determined randomly

Automaticity/Urge to Utter -Likert questions: optional (see section Editable Parameters), by default they are both turned off
- 'automaticity' question always precedes 'urge to utter' question (unless 'automaticity' question is skipped)
- are presented if the Spacebar is pressed during the presentation of the target images
- present a scale from 1-8 and wait for selection


Trial Sequence:
Start-screen with prompt (5000s, editable) -> Fixation cross for 700ms (editable) -> image for max 4000ms (waits for Spacebar response)
IF: spacebar response, 2 likert questions regarding ratings for 'automaticity' and 'urge to utter' are given
(optional)


STIMULI
The images provided with this script are digitalized versions (300px x 300px) of the pictures presented by:
Snodgrass, J. G., & Vanderwart, M. (1980). A standardized set of 260 pictures: Norms for name agreement, 
image agreement, familiarity, and visual complexity. Journal of Experimental Psychology:
Human Learning & Memory, 6, 174-215.

The images were created in Paint.NET by Millisecond Software LLC.

the images can be easily edited under section Editable Stimuli
Note: the number of stimuli listed under item.practiceTargets and item.testTargets controls
the number of practice/test trials run

INSTRUCTIONS
provided by Millisecond Software - can be edited under 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:

/promptDuration:					duration (in ms) of the prompt (default: 5000ms)
/fixationDuration:					duration (in ms) of fixation cross (default: 700ms)
/targetDuration:					max. duration (in ms) of target image (default: 4000ms)

/picSize:							controls the proportional sizing of the images (proportional to canvas height) (default: 30%)

/skipAutomaticityQuestion:			1 (true) = the automaticity likert question is skipped after a spacebar press (default)
									0 (false) = the automaticity likert question is presented after a spacebar press 
/skipUrgeToUtterQuestion:			1 (true) = the urgeToUtter likert question is skipped after a spacebar press (default)
									0 (false) = the  urgeToUtter likert question is presented after a spacebar press 
									Note: if selected the automaticity question always precedes the urgeToUtter question in this script
Copyright © Millisecond Software. All rights reserved.
Contact | Terms of Service | Security Statement | Employment