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dc.contributor.authorKnolle, Franziskaen
dc.contributor.authorGoncalves, Rita Pen
dc.contributor.authorMorton, Jenniferen
dc.date.accessioned2018-01-31T16:12:19Z
dc.date.accessioned2019-06-03T09:20:17Z
dc.date.available2018-01-31T16:12:19Z
dc.date.available2019-06-03T09:20:17Z
dc.date.issued2017-11-08en
dc.identifier.issn2054-5703
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/293283
dc.description.abstract© 2017 The Authors. One of the most important human social skills is the ability to recognize faces. Humans recognize familiar faces easily, and can learn to identify unfamiliar faces from repeatedly presented images. Sheep are social animals that can recognize other sheep as well as familiar humans. Little is known, however, about their holistic face-processing abilities. In this study, we trained eight sheep (Ovis aries) to recognize the faces of four celebrities from photographic portraits displayed on computer screens. After training, the sheep chose the ‘learned-familiar’ faces rather than the unfamiliar faces significantly above chance. We then tested whether the sheep could recognize the four celebrity faces if they were presented in different perspectives. This ability has previously been shown only in humans. Sheep successfully recognized the four celebrity faces from tilted images. Interestingly, there was a drop in performance with the tilted images (from 79.22±7.5% to 66.5±4.1%) of a magnitude similar to that seen when humans perform this task. Finally, we asked whether sheep could recognize a very familiar handler from photographs. Sheep identified the handler in 71.8±2.3% of the trials without pretraining. Together these data show that sheep have advanced face-recognition abilities, comparable with those of humans and non-human primates.
dc.format.mediumElectronic-eCollectionen
dc.languageengen
dc.relation.replaceshttps://www.repository.cam.ac.uk/handle/1810/271416
dc.relation.replaces1810/271416
dc.relation.replaces1810/283160
dc.relation.replaceshttps://www.repository.cam.ac.uk/handle/1810/283160
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleSheep recognize familiar and unfamiliar human faces from two-dimensional images.en
dc.typeArticle
prism.issueIdentifier11en
prism.publicationDate2017en
prism.publicationNameRoyal Society open scienceen
prism.startingPage171228
prism.volume4en
dc.identifier.doi10.17863/CAM.18403
dc.identifier.doi10.17863/CAM.40438
dc.identifier.doi10.17863/CAM.40438
dc.identifier.doi10.17863/CAM.40438
dcterms.dateAccepted2017-10-04en
rioxxterms.versionofrecord10.1098/rsos.171228en
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-11-08en
dc.contributor.orcidKnolle, Franziska [0000-0002-9542-613X]
dc.contributor.orcidMorton, Anne [0000-0003-0181-6346]
dc.identifier.eissn2054-5703
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idCHDI Foundation, Inc (A2548)
pubs.funder-project-idRoyal Society (unknown)
pubs.funder-project-idRoyal Society (LT2009/JM/HL)
pubs.funder-project-idCHDI Foundation, Inc (A-4050)
pubs.funder-project-idCHDI Foundation, Inc (A-4050)
cam.orpheus.successThu Jan 30 13:00:24 GMT 2020 - The item has an open VoR version.*
rioxxterms.freetoread.startdate2100-01-01


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International