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Rushton, J. Philippe – Intelligence, 1992
Cranial capacities were calculated from external head measurements reported for a stratified random sample of 6,325 Army personnel measured in 1988. Data suggest that human populations differ in brain size by race and sex. The major source of variation in data was sex; race was second and rank last. (Author/SLD)
Descriptors: Anthropology, Blacks, Females, Intelligence