Show simple item record

Files in this item


Item metadata

dc.contributor.authorEckert, Johanna
dc.contributor.authorRakoczy, Hannes
dc.contributor.authorDuguid, Shona
dc.contributor.authorHermann, Esther
dc.contributor.authorCall, Josep
dc.identifier.citationEckert , J , Rakoczy , H , Duguid , S , Hermann , E & Call , J 2021 , ' The ape lottery : chimpanzees fail to consider spatial information when drawing statistical inferences ' , Animal Behavior and Cognition , vol. 8 , no. 3 , pp. 305-324 .
dc.identifier.otherPURE: 270617543
dc.identifier.otherPURE UUID: 7b9a3579-fb69-4fad-bb11-d3e845ee4574
dc.identifier.otherORCID: /0000-0002-8597-8336/work/98488038
dc.identifier.otherORCID: /0000-0003-4844-0673/work/98488263
dc.descriptionFunding: this work was supported by a research grant of the German Science Foundation DFG (grant # RA 2155/3-1) to Hannes Rakoczy and Josep Call. We acknowledge additional support by the Leibniz Association through funding for the Leibniz ScienceCampus Primate Cognition.en
dc.description.abstractHumans and nonhuman great apes share a sense for intuitive statistics, making intuitive probability judgments based on proportional information. This ability is of tremendous importance, in particular for predicting the outcome of events using prior information and for inferring general regularities from limited numbers of observations. Already in infancy, humans functionally integrate intuitive statistics with other cognitive domains, rendering this type of reasoning a powerful tool to make rational decisions in a variety of contexts. Recent research suggests that chimpanzees are capable of one type of such cross-domain integration: The integration of statistical and social information. Here, we investigated whether apes can also integrate physical information into their statistical inferences. We tested 14 sanctuary-living chimpanzees in a new task setup consisting of two “gumball machine”-apparatuses that were filled with different combinations of preferred and non-preferred food items. In four test conditions, subjects decided which of two apparatuses they wanted to operate to receive a random sample, while we varied both the proportional composition of the food items as well as their spatial configuration above and below a barrier. To receive the more favorable sample, apes needed to integrate proportional and spatial information. Chimpanzees succeeded in conditions in which we provided them either with proportional information or spatial information, but they failed to correctly integrate both types of information when they were in conflict. Whether these limitations in chimpanzees' performance reflect true limits of cognitive competence or merely performance limitations due to accessory task demands is still an open question.
dc.relation.ispartofAnimal Behavior and Cognitionen
dc.rightsCopyright © 2021 The Author(s). Open Access article distributed under the Creative Commons Attribution 3.0 License, which permits individuals to copy, reuse, reprint, modify, distribute, transmit, and adapt their work in any medium, so long as the original work is properly cited.en
dc.subjectIntuitive statisticsen
dc.subjectProbabilistic reasoningen
dc.subjectPhysical cognitionen
dc.subjectCross-domain integrationen
dc.subjectGreat apesen
dc.subjectQL Zoologyen
dc.titleThe ape lottery : chimpanzees fail to consider spatial information when drawing statistical inferencesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Psychology and Neuroscienceen
dc.contributor.institutionUniversity of St Andrews.Centre for Social Learning & Cognitive Evolutionen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record