TY - GEN ID - cogprints848 UR - http://cogprints.org/848/ A1 - Humphrey, Nicholas Y1 - 1999/// N2 - Skoyles's case against human brain size being related to IQ is strong; 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, in the need to have a brain that could continue to function into old age. KW - brain size KW - evolution of intelligence KW - human life history KW - social intelligence hypothesis KW - human evolution TI - Why Grandmothers May Need Large Brains. (Commentary on Skoyles on Brain Expertise) SP - 1 AV - public EP - 3 ER -