Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond
Created: January 01, 2020
Last Modified: January 10, 2025 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
This script implements a procedure to test Immediate Word Recognition. Immediate Word Recognition is a subset of the Cognitive Drug Research Computerized Assessment System (COGDRAS).
THE EVALUATION OF EARLY DEMENTIA. INTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY, VOL. 10: 199-206.
3 minutes
Participants view a list of 12 words, each presented for 3seconds. Afterwards they are given 24 words (12 old, 12 new) and are asked to press a dedicated YES-key for words previously seen and press a dedicated NO-key for new words.
(1) Learning:
- 12 words are presented one-by-one in the middle of the screen; each is presented for 3s (editable parameter)
(2) Recognition Test
- 12 target words (from learning) and 12 foil (=new)) words are presented, one-by-one in the middle of the screen;
order is randomly determined
- participant respond by pressing 'Q' for yes (it's a target) or 'P' for no (it's a foil/not a target)
provided by Millisecond - can be edited under section Editable Stimuli
The current words provided in this script were taken from:
McEvoy, C. L., & Nelson, D. L. (1982). Category name and instance norms for 106 categories of various sizes.
American Journal of Psychology, 95, 581-634.
Nairne, J. S. (1990). A feature model of immediate memory. Memory and Cognition, 18, 251-269.
Each of the 24 words come from a different category.
The words can easily be exchanged for others.
provided by Millisecond - can be edited under section Editable Instructions
File Name: immediatewordrecognition_cogdras_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 |
| irecAcc | Proportion correct recognition (across target and foil words) in Immediate Word Recognition Test |
| irecRT | Mean response time (in ms) of correct responses (across target and foil words) during recognition phase in Immediate Word Recognition Test |
| irecHitRT | Mean response time (in ms) of correct responses for target words only |
| rHit | The hitrate (proportion correct responses for target words => participant said 'yes' to target words) |
| rFA | The false alarm rate (proportion of incorrect responses for foil words => participants said 'yes' to foil words) |
| irecAPrime | Non-parametric measure of sensitivity in Immediate Word Recognition Test Range: 0 (all incorrect responses) - 0.5 (random responses) - 1 (all correct responses) For Aprime measure see Stanislaw, H. & Todorov, N. (1999). Calculation of signal detection theory measures. Behavior Research Methods, Instruments, & Computers, 1999, 31 (1), 137-149. Nicholl et al (1995) used the non-parametric signal theory index (SI) presented by Frey and Colliver (1973) with a range of -1 (all incorrect) to 1 (all correct) |
File Name: immediatewordrecognition_cogdras_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 | 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 |
| stimulusitem | The presented words |
| response | The participant's response (scancode of response buttons) 16 = Q 25 = P 57 = spacebar |
| responseLabel | "yes" vs. "no" |
| responseCategory | "Hit" (pressed yes-key for a target word) "Miss" (pressed no-key for a target word) = omission error "CR" (pressed no-key for a foil word) = correct rejection "FA" (pressed yes-key for a foil word) = commission error |
| correct | Accuracy of response: 1 = correct response; 0 = otherwise |
| latency | The response latency (in ms); measured from: onset of words |
The procedure can be adjusted by setting the following parameters.
| Name | Description | Default |
|---|---|---|
Stimsize |
||
| stimSize | The proportional sizing of the words | 10% |
Duration Parameters |
||
| firstStimDelay | The delay (in ms) of the first stim after pressing spacebar to start | 1000 |
| stimPresentationDuration | The presentation duration (in ms) of each word | 3000 |
| isi | The interstimulus interval (in ms) | 0 |
Response Keys |
||
| leftKey | The left response key (here: Q) | "Q" |
| rightKey | The right response key (here: P) | "P" |
| yesKey | The assignment of left/right key to the yesKey (here Q); left keys will appear on the left on touch screens | parameters.leftKey |
| noKey | The assignment of left/right key to the noKey (here P); right keys will appear on the right on touch screens | parameters.rightKey |