The Identification Test uses a choice reaction time paradigm to measure attention.
Administration Time (in healthy volunteers): 3 Minutes
Cognitive Domain Measured: Attention
Identification Test Description
The pre-test on-screen instructions ask: “Is the card red?” The test supervisor will read full instructions to the subject from the test supervisor script.
To begin the test, the test supervisor or subject must press the “Enter” key. A playing card is presented in the center of the screen.
The card will flip over so it is face up. As soon as it does this the subject must decide whether the card is red or not.
If it is red he/she should press “Yes”, if it is not red he/she should press “No”.
The subject will practice until they reach the required number of responses, or until the practice period expires.
Then, on screen instructions for the real test are presented. The test supervisor or subject must press the “Enter” key to begin the real test.
The subject should be encouraged to work as quickly as they can and be as accurate as he/she can. For example, the subject should try not to press either the “Yes” or “No” key before a card flips over. If he/she makes a mistake they will hear an error sound.
Primary Outcome measure
Unit of measurement: Log10 milliseconds
Description and interpretation of scores: Speed of performance; mean of the log10 transformed reaction times for correct responses. (Lower score = better performance)