Executive function

CognitionKit Digit Symbol Substitution (DSST)

The CognitionKit DSST is a global measure of cognitive ability, requiring multiple cognitive domains to complete effectively.

Executive function tasks

Task format

The task presents participants with an array of abstract symbols associated with numbers. When a particular number is highlighted on screen, the participant must draw the corresponding abstract shape using their index finger on the smartphone. This is a timed test, so the participant must try to complete as many symbol-to-number matches within the allotted timeframe.

Outcome measures

Outcome measures include total correct, errors and latency (movement latency and response latency).

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