Fig. 1: Description of Data Protocol and Cognitive Tasks.
From: Mapping computational cognitive profiles of aging to dissociable brain and sociodemographic factors
A Study protocol outlining stages of recruitment, screening, and data collection (encompassing a structured interview, structural MRI scan, and neuropsychological testing). B The Go/No-Go task was used to probe response inhibition. Participants were instructed to respond using the Spacebar when seeing a specific alphabet (Go-Trials) on screen, but to withhold responding when seeing another alphabet (No-Go Trials). Participants were instructed to respond within 500 milliseconds during Go trials otherwise they are given the feedback ‘Too Slow’. Erroneous responses during No-Go trials led to ‘Incorrect’ feedback being displayed. C Cognitive flexibility was assessed using the Wisconsin Card Sorting Task (WCST), which contained 128 trials. Participants are instructed to sort cards into decks based on a rule (either number, colour, or shape). They must discern the rule based on trial-by-trial feedback. If they use the correct rule 10 times in a row (indicating the completion of one set), the rule changes.
