?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Chickens+prefer+beautiful+humans&rft.creator=Ghirlanda%2C+Stefano&rft.creator=Jansson%2C+Liselotte&rft.creator=Enquist%2C+Magnus&rft.subject=Ethology&rft.subject=Animal+Cognition&rft.subject=Philosophy+of+Mind&rft.subject=Evolutionary+Psychology&rft.subject=Animal+Behavior&rft.description=We+trained+chickens+to+react+to+an+average+human+female+face+but+not+to+an+average+male+face+(or+vice-versa).+In+a+subsequent+test%2C+the+animals+showed+preferences+for+faces+consistent+with+human+sexual+preferences+(obtained+from+university+students).+This+suggests+that+human+preferences+arise+from+general+properties+of+nervous+systems%2C+rather+than+from+face-specific+adaptations.+We+discuss+this+result+in+the+light+of+current+debate+on+the+meaning+of+sexual+signals%2C+and+suggest+further+tests+of+existing+hypotheses+about+the+origin+of+sexual+preferences.%0A&rft.date=2002&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5272%2F1%2Fghirlanda_jansson_enquist2002.pdf&rft.identifier=++Ghirlanda%2C+Stefano+and+Jansson%2C+Liselotte+and+Enquist%2C+Magnus++(2002)+Chickens+prefer+beautiful+humans.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5272%2F