?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Categorical+Perception&rft.creator=Harnad%2C+Stevan&rft.subject=Cognitive+Psychology&rft.description=Differences+can+be+perceived+as+gradual+and+quantitative%2C+as+with+different+shades+of+gray%2C+or+they+can+be+perceived+as+more+abrupt+and+qualitative%2C+as+with+different+colors.+The+first+is+called+continuous+perception+and+the+second+categorical+perception.+Categorical+perception+(CP)+can+be+inborn+or+can+be+induced+by+learning.+Formerly+thought+to+be+peculiar+to+speech+and+color+perception%2C+CP+turns+out+to+be+far+more+general%2C+and+may+be+related+to+how+the+neural+networks+in+our+brains+detect+the+features+that+allow+us+to+sort+the+things+in+the+world+into+their+proper+categories%2C+%22warping%22+perceived+similarities+and+differences+so+as+to+compress+some+things+into+the+same+category+and+separate+others+into+different+categories&rft.publisher=MacMillan%3A+Nature+Publishing+Group&rft.date=2003&rft.type=Book+Chapter&rft.type=NonPeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F3017%2F1%2Fcatperc.html&rft.identifier=++Harnad%2C+Stevan++(2003)+Categorical+Perception.++%5BBook+Chapter%5D++++(In+Press)++&rft.relation=http%3A%2F%2Fcogprints.org%2F3017%2F