Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond
Created: January 19, 2012
Last Modified: January 15, 2023 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
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.
( https://www.psychology.gatech.edu/renglelab/publications/2012/RedicketalJEPG.pdf)
7 minutes
Participants work through 10 general knowledge questions ( questions are culturally sensitive).
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 can be edited under section Editable Stimuli
Instructions can be edited under section Editable Instructions
File Name: generalknowledge_summary*.iqdat
| Name | Description |
|---|---|
| inquisit.version | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| startDate | Date the session was run |
| startTime | Time the session was run |
| subjectId | Participant ID |
| groupId | Group number |
| sessionId | Session number |
| elapsedTime | Session duration in ms |
| completed | 0 = Test was not completed 1 = Test was completed |
| taskDuration | Time alloted to the entire task (default: 420000ms = 7min) |
| numCorrect | Sum up all correct responses |
File Name: generalknowledge_raw*.iqdat
| Name | Description |
|---|---|
| build | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| date | Date the session was run |
| time | Time the session was run |
| subject | Participant ID |
| group | Group number |
| session | Session number |
| blockCode | Name of the current block |
| blockNum | Number of the current block |
| trialCode | Name of the current trial |
| trialNum | Number of the current trial |
| 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 |
The procedure can be adjusted by setting the following parameters.
| Name | Description | Default |
|---|---|---|
| taskDuration | Time alloted to the entire task in ms | 420000ms = 7min |
| timeReminder | A red circle appears around the clock at this time to highlight how much time is left | 60000ms = 1min left |