Time Wall Task
System Requirements
Minimum: 800×600
Recommended: 1024×768
Description
A time estimation task from the UTC test battery (Jerison et al., 1957). A square target descends at constant speed, becomes occluded behind a wall, and participants estimate when it would reach a notch at the bottom. Tests temporal perception and mental extrapolation.
Test Details
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Scientific Background
Original Task References:
These references describe the original task that this PEBL implementation is based on.
- Jerison, H. H., Crannell, C. W., & Pownall, O. (1957). Acoustic noise and repeated time judgements in a visual movement projection task (WADC-IR-57-54). Wright Air Development Center, Wright-Patterson Air Force Base, Ohio.
- Jerison, H. J., & Arginteanu, J. (1958). Time judgements, acoustic noise, and judgement drift (WADC-TR-57-454). Wright Air Development Center, Wright-Patterson Air Force Base, Ohio.
Data Output
Creates one data file: timewall-<subnum>.csv with trial-level data including subnum, trial number, target transit time (actual), response time (estimated), accuracy (proportional error), and direction of error (short/long). Feedback provided after each trial showing actual vs. estimated time.
Example Data
| subnum | trial | targtime | resptime | acc | shortlong |
|---|---|---|---|---|---|
| 1116 | 1 | 6631.58 | 6412 | 0.0331111 | -1 |
| 1116 | 2 | 5368.42 | 5365 | 0.000637255 | -1 |
| 1116 | 3 | 3263.16 | 3223 | 0.0123065 | -1 |
Sample data showing typical output format. Actual values will vary by participant.
About This Test
A time estimation task from the UTC test battery (Jerison et al., 1957). A square target descends at constant speed, becomes occluded behind a wall, and participants estimate when it would reach a notch at the bottom. Tests temporal perception and mental extrapolation.
Category: Perception
Estimated Duration: 3 minutes
Available Translations: 7 languages
Documentation Sources:
Test implementation, Parameter schema
Documentation Status: Standard