The purpose of this study was to explore whether asking middle-aged gamers and non-gamers about their video games habits will affect their performance of cognitive-motor tasks. One-hundred and twenty-one participants were randomly assigned to four groups: (a) gamers who were asked about their playing habits prior to the study, (b) gamers who were asked about their playing habits following the study, (c) non-gamers who were asked about their playing habits prior to the study, and (d) non-gamers who were asked about their playing habits following the study. The participants performed three reaction time (RT) tasks and a digit-span memory task. In a task-switching task, gamers had more correct responses when they answered the questionnaire before performing the task compared with after the task. For the non-gamers, the opposite occurred. We conclude that some performance measures of cognitive-motor tasks could have been affected by the timing of the completion of the questionnaire. This finding should be known to researchers as it may lead to biases gaming research.
Keywords: Cognitive performance; Middle-age; Response expectancy theory; Suggestion.
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