In previous research, we developed a serious target acquisition game (with moles as targets) for assessing cognitive speed. Tong, Chignell, Tierney, and Lee demonstrated that performance on the game may be a useful screening tool for risk of delirium onset. In this study, we validate a version of the game where there are not only targets (moles) that should be hit but also distractors (butterflies, or moles with hats) that should not be hit. We hypothesized that performance on the game should be a measure of response inhibition ability, which has been implicated as a factor in many types of psychopathology. We carried out an experiment (with 30 healthy participants) to test whether the serious game does in fact measure response inhibition by comparing game performance with a standard response inhibition task (the Go/No-Go discrimination task). Our results show that, with the distractors, the game does in fact assess response inhibition ability. We discuss the implications of this work for assessing executive functions in the elderly, and for evaluating recovery in neuro-rehabilitation, and declining ability to perform activities of daily living.
Keywords: go/no-go discrimination task; cognitive assessments; executive function; response inhibition; serious games.