?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Why+Grandmothers+May+Need+Large+Brains.+(Commentary+on+Skoyles+on+Brain+Expertise)&rft.creator=Humphrey%2C+Nicholas&rft.subject=Animal+Cognition&rft.subject=Physiological+Psychology&rft.subject=Psycoloquy&rft.subject=Sociobiology&rft.subject=Evolutionary+Psychology&rft.subject=Behavioral+Neuroscience&rft.description=Skoyles's+case+against+human+brain+size+being+related+to+IQ+is+strong%3B+but+his+case+in+favor+of+its+being+related+to+expertise+is+weak.+I+propose+that+the+explanation+for+the+evolutionary+expansion+of+the+human+brain+in+fact+lies+far+away%2C+in+the+need+to+have+a+brain+that+could+continue+to+function+into+old+age.&rft.date=1999&rft.type=Journal+(On-line%2FUnpaginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F848%2F1%2Fskoyles.htm&rft.identifier=++Humphrey%2C+Nicholas++(1999)+Why+Grandmothers+May+Need+Large+Brains.+(Commentary+on+Skoyles+on+Brain+Expertise).++%5BJournal+(On-line%2FUnpaginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F848%2F