?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title='Interest'+and+'pleasure'%3A+two+determinants+of+a+monkey's+visual+preferences&rft.creator=Humphrey%2C+Nicholas+K&rft.subject=Animal+Behavior&rft.subject=Perceptual+Cognitive+Psychology&rft.description=When+given+a+choice+between+two+visual+stimuli+(plain+fields+of+light+of+different+colour%2C+photographs%2C+cine+films%2C+etc.)+monkeys+show+strong+and+consistent+preferences.+The+strength+and+direction+of+the+preferences+is+determined+by+two+independent+factors%3A+the+monkey's+relative+'interest'+in+the+stimuli+(determined+largely+by+their+information+content)+and+his+relative+'pleasure'+(determined+by+qualities+such+as+colour+and+brightness).+With+an+unchanging+stimulus+'interest'+rapidly+fades+but+'pleasure'+(or+'unpleasure')+remains+stable.+If+the+two+factors+are+set+against+each+other%2C+as+when+a+red-coloured+cine+film+is+paired+with+a+plain+white+field+(the+pictorial+content+of+the+film+being+interesting%2C+its+colour+unpleasant)%2C+interest+over-rides+pleasure+in+determining+the+observed+preference.+A+quantitative+model+based+on+these+principles+predicts+the+behaviour+in+a+variety+of+situations+with+great+accuracy.&rft.date=1972&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F1768%2F2%2FPerception72.pdf&rft.identifier=++Humphrey%2C+Nicholas+K++(1972)+'Interest'+and+'pleasure'%3A+two+determinants+of+a+monkey's+visual+preferences.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F1768%2F