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dc.contributor.authorForss, Sofia I. F.
dc.contributor.authorWillems, Erik
dc.contributor.authorCall, Josep
dc.contributor.authorvan Schaik, Carel P.
dc.identifier.citationForss , S I F , Willems , E , Call , J & van Schaik , C P 2016 , ' Cognitive differences between orang-utan species: a test of the cultural intelligence hypothesis ' , Scientific Reports , vol. 6 , 30516 .
dc.identifier.otherPURE: 245028670
dc.identifier.otherPURE UUID: 200a4451-0d3d-42b3-99d2-b5b44e605809
dc.identifier.otherScopus: 84979924778
dc.identifier.otherORCID: /0000-0002-8597-8336/work/37478028
dc.identifier.otherWOS: 000380974700001
dc.descriptionWe also express our gratitude to the following foundations who have financially supported this project: A. H. Schultz Foundation, Paul Schiller Foundation and the Claraz Foundation in Switzerland and Waldemar von Frenckells Foundation, Ella and Georgh Ehrnrooths Foundation, Otto A. Malms Donationsfond, Nordenskiöld Samfundet and Oskar Öflunds Foundation in Finland.en
dc.description.abstractCultural species can-or even prefer to-learn their skills from conspecifics. According to the cultural intelligence hypothesis, selection on underlying mechanisms not only improves this social learning ability but also the asocial (individual) learning ability. Thus, species with systematically richer opportunities to socially acquire knowledge and skills should over time evolve to become more intelligent. We experimentally compared the problem-solving ability of Sumatran orang-utans (Pongo abelii), which are sociable in the wild, with that of the closely related, but more solitary Bornean orang-utans (P. pygmaeus), under the homogeneous environmental conditions provided by zoos. Our results revealed that Sumatrans showed superior innate problem-solving skills to Borneans, and also showed greater inhibition and a more cautious and less rough exploration style. This pattern is consistent with the cultural intelligence hypothesis, which predicts that the more sociable of two sister species experienced stronger selection on cognitive mechanisms underlying learning.
dc.relation.ispartofScientific Reportsen
dc.rights© The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
dc.subjectBF Psychologyen
dc.titleCognitive differences between orang-utan species: a test of the cultural intelligence hypothesisen
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

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