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).
Nicholl, C.G. et al (1995). THE COGNITIVE DRUG RESEARCH COMPUTERIZED ASSESSMENT SYSTEM IN SPEED OF THE ESSENCE? 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 |