Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond
SCRIPT INFO
Created: January 24, 2017
Last Modified: January 09, 2023 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
This script was programmed for and made available by the ABCD Research Consortium.
This script implements a mental rotation task for children. The current version is optimized for tablet use/tablet size (e.g. ipads) used for iperson testing. A smartphone version optimized for remote testing is also available in the Millisecond library.
5 minutes
Participants are presented figures that carry a suitcase in either the left or right hand. Figures can show their front or back and can be right side up or up side down. Participants work through 4 practice problems with the test administrator before working on 32 problems on their own.
- 1 demo problem (if incorrect, it can be repeated as often as necessary); no response deadline
- 3 additional practice problems
- demo and practice problems are presented in a fixed order
- 32 test problems (presented in fixed order)
Trial Sequence:
homebutton needs to be pressed (changes color from white to gray) -> ITI: 1500ms -> stim (until response or timeout at 5s) ->
practice trials
The error feedback is presented for at least 1000ms regardless of whether the home button is pressed beforehand or not.
ITI is started only if the home button was pressed.
provided by ABCD Consortium, see section Editable Stimuli
provided by ABCD Consortium, see section Editable Instructions
File Name: abcdlittlemantest_tablet_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 |
| lmtScrAssessDate | Currently simply stores the script.startDate (the local time is stored under script.startTime) |
| lmtSrcPropCorrect | Proportion of correct responses |
| lmtScrNumCorrect | Absolute number of correct responses |
| lmtScrNumWrong | Absolute number of (active) error responses |
| lmtScrNumTimedOut | Absolute number of timeout (passive) errors. |
| lmtScrAvgRT | Average response time of correct and incorrect selections timeouts latencies are excluded from this variable |
| lmtScrRtCorrect | Average only correct RT; calculation (Mean latency for correct =1) |
| lmtScrRtWrong | Average only wrong RT (= latencies of incorrect selections) Note (KB): timeout errors are excluded |
| lmtScrEfficiency | Accuracy/ Reaction Time; calculation (lmt_src_prop_correct/lmt_scr_rt_correct) lmtStimType1CorrectRt- |
| lmtStimType8CorrectRt | Latency of correct selections by stimulus type (1-8) lmtStimType1NumCorrect- |
| lmtStimType8NumCorrect | Number of correct selections by stimulus type (1-8) lmtStimType1WrongRt- |
| lmtStimType8WrongRt | Latency of error selections by stimulus type (1-8) lmtStimType1NumWrong- |
| lmtStimType8NumWrong | Number of error selections by stimulus type (1-8) lmtStimType1NumTimedOut- |
| lmtStimType8NumTimedOut | Number of timed-out selection trials by stimulus type (1-8) |
File Name: abcdlittlemantest_tablet_raw*.iqdat
| Name | Description |
|---|---|
| build | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| date, time, subject, group, session | Date and time script was run with the current subject/groupnumber/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 |
| lmtStimulusXx | Stores the currently presented image file |
| lmtStimulusTypeXx | 1 Backward Down Left 2 Backward Down Right 3 Backward Up Left 4 Backward Up Right 5 Forward Down Left 6 Forward Down Right 7 Forward Up Left 8 Forward Up Right |
| lmtCorrectButtonXx | Stores the correct location of the suitcase: 0 = left; 1 = right |
| response | Stores the response button pressed: "leftbutton" vs. "rightbutton" vs. 0 => no response (Inquisit default response variable) |
| lmtButtonPressedXx | Stores the response button pressed: 0 = "left"; 1 = "right"; or "timedout" (custom response variable) |
| lmtCorrectXx | Accuracy of response: 1 = correct response; 0 = otherwise (wrong selection or timeout) |
| lmtRTXx | The response latency (in ms); measured from: onset of images until response or timeout timeout latencies are stored as -1 |
| homeButtonRT | The time (in ms) that it took to press the green home Button during trial.ITI |
The procedure can be adjusted by setting the following parameters.
| Name | Description | Default |
|---|---|---|
| picSize | The proportional size of the little man images | 60% |
| responseButtonSize | The proportional size of the response buttons | 8% |
| iti | The duration (in ms) of the intertrial interval | 1500ms |
| readyDuration | The duration (in ms) of the ready trial | 3000ms |
| responseDeadline | A response deadline in ms | 5000ms |
| scriptLastUpdate | Should store the date of the last change made to the script |