University of Limerick
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Test–retest reliability and practice effects on a shortened version of the category switch task – a pilot study

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posted on 2024-06-06, 07:57 authored by Tim David SmithiesTim David Smithies, Adam TothAdam Toth, Mark CampbellMark Campbell

Test–retest reliability and practice effects have not been assessed for the Category Switch Task (CST), a task-switching paradigm readily available to researchers. Forty-eight participants completed a shortened CST twice. Test–retest intervals were either same day, one day, or one week. Test–retest reliability was assessed via Pearson’s correlation and intraclass correlation coefficient. Practice Effects were assessed using paired-samples t-tests, and the effect of interval was examined through a series of ANCOVAs. Single task, switch cost and mixing cost response time test–retest reliability was comparable to other task-switching paradigms, while reliability for switch and mixing cost accuracy was poor. Test–retest Practice Effects were present for single task response time and accuracy, and mixing cost response time. Of these, Practice Effects varied as a function of interval only for single task accuracy, where an interval of one week resulted in a smaller improvement compared to one day. Results and implications for use are discussed


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Journal of Cognitive Psychology pp. 1–12


Routledge Taylor & Francis Group

Other Funding information

European Regional Development Fund through the Southern and Eastern Regional Operational Programme to Lero—the Science Foundation Ireland Centre for Software Research ( TS is receiving funding from the Irish Research Council Employment-Based Postgraduate Programme Scholarship (EBPPG/2019/21), with Logitech as the “Employment Partner”

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  • LERO - The Science Foundation Ireland Research Centre for Software

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  • Physical Education and Sports Science

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