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Baddeley's 3-Minute Grammatical Reasoning Test
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Script Author: Sean Draine, Ph.D. (seandr@millisecond.com) for Millisecond Software, LLC
last updated: 02-17-2022 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC
Script Copyright © 02-17-2022 Millisecond Software
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BACKGROUND INFO
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This script implements the Baddeley's 3-Minute Grammatical Deductive Reasoning Test
described in:
Baddeley, A. D. (1968). A 3 min reasoning test based on grammatical transformation.
Psychonomic Science, 10, 341-342.
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TASK DESCRIPTION
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Participants view statements like "A follows B" paired with 2 letters "AB" or "BA" and are asked
to judge whether the letter pair is a correct representation of the statement by clicking
"true" or "false". The test times out after 3 minutes.
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DURATION
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the default set-up of the script takes appr. 4 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: 'baddeley_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
sesion: 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.
stimulusitem: the presented stimuli in order of trial presentation
response: the participant's response ('true' or 'false')
correct: accuracy of response: 1 = correct response; 0 = otherwise
latency: the response latency (in ms); measured from: onset of problem
totalCorrectCount: total correct responses tallied separately for practice and test trials
(2) Summary data file: 'baddeley_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)
totalCorrectCount: total number of correct test responses
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EXPERIMENTAL SET-UP
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- 64 statements (half of them are 'true') tested in 3 minutes
- order of statements random
PRACTICE
- 4 practice statements
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STIMULI
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- 64 statements: 2 phrasing (positive vs negative) x 2 activeness (active vs passive) x 2 Correctness (true vs false) x 2 order (precedes vs. follows) x 2 first letter mentioned in statement (A or B) vs. 2 letter pairs (AB vs BA)
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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.
The parameters you can change are:
/testduration: sets the duration of the test in ms (default: 3min => 180000ms)
