Weather Prediction Task
System Requirements
Minimum: 1024×768
Recommended: 1024×768
Description
A probabilistic category learning task based on Knowlton et al. (1994). Participants see 1-3 cards with different symbols, each probabilistically predicting sun or rain. Through trial-and-error with feedback, participants learn which cards predict which weather outcome. Tests implicit learning and habit formation.
Test Details
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Scientific Background
Original Task References:
These references describe the original task that this PEBL implementation is based on.
- Knowlton, B. J., Squire, L. R., & Gluck, M. A. (1994). Probabilistic classification learning in amnesia. Learning & Memory, 1(2), 106-120.
Data Output
Creates one data file: wpt-<subnum>.csv with trial-level data including subnum, trial number, configuration (pattern A-N), presence of each card (c1-c4), sample probability, rain probability, alternative probability calculation, presentation time, reaction time, response (rain/sun prediction), actual outcome, correctness. Running point total displayed throughout task.
Example Data
| subnum | test | trial | config | c1 | c2 | c3 | c4 | sampleprob | rainprob | time | rt | resp | outcome | correct | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | wpt | 1 | L | 1 | 1 | 0 | 0 | 0.087 | 0.9 | 0.9 | 104670 | 12387 | <lshift> | 1 | 1 |
| 1 | wpt | 2 | B | 0 | 0 | 1 | 0 | 0.084 | 0.38 | 0.38 | 118095 | 748 | <rshift> | 1 | 0 |
| 1 | wpt | 3 | D | 0 | 1 | 0 | 0 | 0.084 | 0.62 | 0.62 | 120381 | 1169 | <lshift> | 0 | 0 |
| 1 | wpt | 4 | B | 0 | 0 | 1 | 0 | 0.084 | 0.38 | 0.38 | 123087 | 1371 | <rshift> | 0 | 1 |
| 1 | wpt | 5 | C | 0 | 0 | 1 | 1 | 0.087 | 0.1 | 0.1 | 125502 | 1573 | <rshift> | 0 | 1 |
| 1 | wpt | 6 | D | 0 | 1 | 0 | 0 | 0.084 | 0.62 | 0.62 | 128112 | 809 | <lshift> | 0 | 0 |
| 1 | wpt | 7 | J | 1 | 0 | 1 | 0 | 0.064 | 0.82 | 0.82 | 130464 | 1369 | <lshift> | 0 | 0 |
| 1 | wpt | 8 | D | 0 | 1 | 0 | 0 | 0.084 | 0.62 | 0.62 | 133370 | 1755 | <lshift> | 0 | 0 |
| 1 | wpt | 9 | B | 0 | 0 | 1 | 0 | 0.084 | 0.38 | 0.38 | 136663 | 731 | <rshift> | 1 | 0 |
Sample data showing typical output format. Actual values will vary by participant.
About This Test
A probabilistic category learning task based on Knowlton et al. (1994). Participants see 1-3 cards with different symbols, each probabilistically predicting sun or rain. Through trial-and-error with feedback, participants learn which cards predict which weather outcome. Tests implicit learning and habit formation.
Category: Learning
Estimated Duration: 25 minutes
Available Translations: 2 languages
Documentation Sources:
Test implementation, Parameter schema
Documentation Status: Standard