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The repeatability of cognitive performance: a meta-analysis
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Number of Authors: 422018 (English)In: Philosophical Transactions of the Royal Society of London. Biological Sciences, ISSN 0962-8436, E-ISSN 1471-2970, Vol. 373, no 1756, article id 20170281Article in journal (Refereed) Published
Abstract [en]

Behavioural and cognitive processes play important roles in mediating an individual's interactions with its environment. Yet, while there is a vast literature on repeatable individual differences in behaviour, relatively little is known about the repeatability of cognitive performance. To further our understanding of the evolution of cognition, we gathered 44 studies on individual performance of 25 species across six animal classes and used meta-analysis to assess whether cognitive performance is repeatable. We compared repeatability (R) in performance (1) on the same task presented at different times (temporal repeatability), and (2) on different tasks that measured the same putative cognitive ability (contextual repeatability). We also addressed whether R estimates were influenced by seven extrinsic factors (moderators): type of cognitive performance measurement, type of cognitive task, delay between tests, origin of the subjects, experimental context, taxonomic class and publication status. We found support for both temporal and contextual repeatability of cognitive performance, with mean R estimates ranging between 0.15 and 0.28. Repeatability estimates were mostly influenced by the type of cognitive performance measures and publication status. Our findings highlight the widespread occurrence of consistent inter-individual variation in cognition across a range of taxa which, like behaviour, may be associated with fitness outcomes. This article is part of the theme issue 'Causes and consequences of individual differences in cognitive abilities'.

Place, publisher, year, edition, pages
2018. Vol. 373, no 1756, article id 20170281
Keywords [en]
cognitive repeatability, evolutionary biology of cognition, individual differences, learning, memory, attention
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-160199DOI: 10.1098/rstb.2017.0281ISI: 000441443800002PubMedID: 30104426OAI: oai:DiVA.org:su-160199DiVA, id: diva2:1251338
Available from: 2018-09-27 Created: 2018-09-27 Last updated: 2018-09-27Bibliographically approved

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Boussard, AnnikaBuechel, Severine D.Nawroth, C.Wallis, L. J.
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