Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond
Created: January 29, 2015
Last Modified: January 31, 2023 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
This script runs a simple Letter Fluency Test with phonetic categories (letters A, F, S) similar to the Controlled Oral Word Association Test (COWAT). This test collects verbal input combined with 'Spacebar' presses for each valid word (by Test Administrator).
7 minutes
Participants are asked to name as many words as they can that begin with letters A, F, S (tested in blocked-design). They have 2 min for each letter (default). Test Administrators should press the Spacebar for each valid word. Soundfiles are saved for each letter for additional analyses.
3 blocks: one block per targetletter
each block has a timelimit of 2min (editable parameter)
Word Count-Estimate:
- the word counts in this script are based on the number of spacebar presses (by administrator) made
This script test letters A, F, S because of their frequency in English
Different letters can be substituted under EDITABLE CODE -> Editable Values
provide by Millisecond - instructions can be edited under
EDITABLE CODE -> Editable Instructions
File Name: letterfluency_voicerecordings_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 |
| estimateTotal | Sum of the estimated wordcounts for the 3 letters |
| targetLetter1 | Stores the first targetletter (default: "A") ('first' does not refer to order in which letters were run in) |
| targetLetter2 | Stores the second targetletter (default: "F") |
| targetLetter3 | Stores the third targetletter (default: "S") wordCount1- |
| wordCount3 | Estimates word count by counting spacebar presses |
File Name: letterfluency_voicerecordings_raw*.iqdat
| Name | Description |
|---|---|
| build | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| date | Date the session was run |
| time | Time the session was run |
| subject, group, | With the current subject/groupnumber |
| 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 |
| stimulusItem | The presented stimuli in order of trial presentation |
| response | The participant's response (57 = spacebar press) |
| latency | The response latency (in ms) |
| targetLetter | Stores the currently run targetletter |
| response | Stores the string response for a given targetletter |
| responseNoSpaces | Stores the string response for a given targetletter minus spaces |
| wordCount | Estimates word count by counting spacebar presses |
The procedure can be adjusted by setting the following parameters.
| Name | Description | Default |
|---|---|---|
| targetLetter1 | Stores the first targetletter | "A" |
| targetLetter2 | Stores the second targetletter | "F" |
| targetLetter3 | Stores the third targetletter | "S" |
| timeLimit | Stores the number of ms that participants have to come up with the words | 120000ms => 2min |
| warningDuration | Stores the duration in ms of the warning signal to prepare participants to get ready for next round | 1000ms |