Four-Choice Serial Response Time
System Requirements
Minimum: 800×600
Recommended: 1024×768
Description
A four-choice serial reaction time task from the UTC test battery (Wilkinson & Houghton, 1975). A plus sign appears in one of four screen quadrants, and participants press the corresponding key as quickly as possible. Optional auditory feedback for lapses.
Test Details
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Scientific Background
Original Task References:
These references describe the original task that this PEBL implementation is based on.
- Wilkinson, R. T., & Houghton, D. (1975). Portable four-choice reaction time test with magnetic tape memory. Behavior Research Methods & Instrumentation, 7(5), 441-446.
- Perez, W. A., Masline, P. J., Ramsey, E. G., & Urban, K. E. (1984). Unified Tri-Services Cognitive Performance Assessment Battery: Review and methodology (DTIC Document ADA181697).
Data Output
Creates two data files: (1) fourchoice-<subnum>.csv with trial-level data including subnum, response type, inter-stimulus interval, trial number, sound enabled, response key, target quadrant, left/right location, up/down location, response quadrant, correctness, lapse flag, and reaction time; (2) fourchoice-summary-<subnum>.txt with accuracy statistics, mean reaction time, and breakdown by correctness with median, mean, and standard deviation of reaction times.
Example Data
| subnum | resptype | isi | trial | sound | resp | quad | leftright | updown | respquad | corr | lapse | rt |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| oeau | 2 | 200 | 1 | 1 | 1 | 3 | left | bottom | 3 | 1 | 0 | 95 |
| oeau | 2 | 200 | 2 | 1 | 5 | 2 | right | top | 2 | 1 | 0 | 910 |
| oeau | 2 | 200 | 3 | 1 | 2 | 4 | right | bottom | 4 | 1 | 0 | 507 |
| oeau | 2 | 200 | 4 | 1 | 1 | 3 | left | bottom | 3 | 1 | 0 | 398 |
| oeau | 2 | 200 | 5 | 1 | 2 | 4 | right | bottom | 4 | 1 | 0 | 435 |
| oeau | 2 | 200 | 6 | 1 | 5 | 2 | right | top | 2 | 1 | 0 | 511 |
| oeau | 2 | 200 | 7 | 1 | 5 | 2 | right | top | 2 | 1 | 0 | 466 |
| oeau | 2 | 200 | 8 | 1 | 4 | 1 | left | top | 1 | 1 | 0 | 402 |
| oeau | 2 | 200 | 9 | 1 | 5 | 2 | right | top | 2 | 1 | 0 | 396 |
Sample data showing typical output format. Actual values will vary by participant.
About This Test
A four-choice serial reaction time task from the UTC test battery (Wilkinson & Houghton, 1975). A plus sign appears in one of four screen quadrants, and participants press the corresponding key as quickly as possible. Optional auditory feedback for lapses.
Category: Processing Speed
Estimated Duration: 4 minutes
Available Translations: 7 languages
Documentation Sources:
Test implementation, Parameter schema
Documentation Status: Standard