___________________________________________________________________________________________________________________ GENERAL KNOWLEDGE TASK ___________________________________________________________________________________________________________________ Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC Date: 11-19-2012 last updated: 02-23-2022 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC Script Copyright © 02-23-2022 Millisecond Software ___________________________________________________________________________________________________________________ BACKGROUND INFO ___________________________________________________________________________________________________________________ This script implements the General Knowledge Task as used in: Redick, T.S., Shipstead, Z., Fried, D.E., Hambrick, D.Z., Kane, M.J. & Engle, R.W. (2012). No Evidence of Intelligence Improvement After Working Memory Training: A Randomized, Placebo-Controlled Study. Journal of Experimental Psychology: General, 1-21. ( http://www.psychology.gatech.edu/renglelab/publications/2012/RedicketalJEPG.pdf) ___________________________________________________________________________________________________________________ TASK DESCRIPTION ___________________________________________________________________________________________________________________ Participants work through 10 general knowledge questions (Note: questions are culturally sensitive). ___________________________________________________________________________________________________________________ DURATION ___________________________________________________________________________________________________________________ the default set-up of the script takes appr. 7 minutes to complete ___________________________________________________________________________________________________________________ DATA FILE INFORMATION ___________________________________________________________________________________________________________________ The default data stored in the data files are: (1) Raw data file: 'generalknowledge_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 session: 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. parameters.taskduration: time alloted to the entire task in ms (default: 420000ms = 7min) stimuluitem.1-stimulusitem.2: the presented stimuli in order of trial presentation choice1-choice4: contains the stimulus for the 4 choices correctchoice: stores the correct choice response: the participant's response correct: the correctness of the response (1 = correct; 0 = otherwise) latency: the response latency (in ms); measured from onset of question numcorrect: sum up all correct responses (2) Summary data file: 'generalknowledge_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) taskduration: time alloted to the entire task (default: 420000ms = 7min) numcorrect: sum up all correct responses ___________________________________________________________________________________________________________________ EXPERIMENTAL SET-UP ___________________________________________________________________________________________________________________ The script presents 10 general knowledge trials (block.generalknowledge) Each trial presents a target question and 4 answer choices. After participants select their choice via mouse-click, the selection gets briefly highlighted before the next trial starts. There are 2 practice problems to familiarize participants with the set-up. There are 7 min allotted to finish block.generalknowledgetask (default, can be changed under section EDITABLE PARAMETERS). A clock on the screen counts down the min/s for the participants. 60s (default, can be changed under section EDITABLE PARAMETERS) before the 7 min are up, a red circle appears around the clock to highlight the remaining time. ___________________________________________________________________________________________________________________ STIMULI ___________________________________________________________________________________________________________________ Stimuli can be edited under section Editable Stimuli ___________________________________________________________________________________________________________________ INSTRUCTIONS ___________________________________________________________________________________________________________________ Instructions 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: /taskduration: time alloted to the entire task in ms (default: 420000ms = 7min) /timereminder: a red circle appears around the clock at this time to highlight how much time is left (default: 60000ms = 1min left)