Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond
Created: January 24, 2013
Last Modified: January 20, 2023 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
This script implements a Prospective Time Estimation procedure similarly to the one described in:
Wittmann, M., Leland, D.S., Jan Churan, J. & Paulus, M.P.(2007). Impaired time perception and motor timing in stimulant-dependent subjects. Drug and Alcohol Dependence, 90, 183–192. (p.184)
1 minute
Participants are asked to estimate a time interval that starts with the presentation of a green circle and a recording saying "start" and ends with the presentation of a red circle and the sound of an alarm. After pressing the Spacebar to turn off the alarm, participants are asked to estimate the duration of the time interval on a slider with 1s increments (0-3min).
Participants are played a tone for a set time interval (editable).
Afterwards they have to estimate the length of the time interval via a slider-response
see section Editable Stimuli
Instructions are not original to the task. They are provided by Millisecond
as htm/html pages and can be edited by changing the provided htm/html files.
To edit htm/html-files: open the respective documents in simple Text Editors such as TextEdit (Mac)
or Notepad (Windows).
File Name: prospectivetimeestimation_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 |
| timeinterval | Time interval to estimate in ms (default: 53000ms = 53s) |
| intervalestimation | Stores the participant's estimation in s |
File Name: prospectivetimeestimation_raw*.iqdat
| Name | Description |
|---|---|
| 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 |
| timeinterval | Time interval to estimate in ms (default: 53000ms = 53s) |
| intervalestimation | Stores the participant's estimation in s |
| latency | The response latency (in ms) |
The procedure can be adjusted by setting the following parameters.
| Name | Description | Default |
|---|---|---|
| timeInterval | Time interval to estimate in ms | 53000ms = 53s |
| Note | If time interval is changed, slider.TE_response may have to be adapted accordingly | |
| pretrialPause | Pause in ms (empty screen) before green circle appears after starting the task |