Race Differences and r / K Theory A Reply to

To allow an adequate evaluation of r/K theory in light of Silverman’s critique, data are tabulated showing that, on average, Mongoloids > Caucasoids > Negroids in brain size and intelligence, maturational delay, sexual restraint, quiescent temperament, and social organization. The sequence of this suite of life-history characters may parallel the order of emergence of the populations in earth history. The phased linearity is ordered by a theory of r/K reproductive strategies in which Mongoloids are more K selected than Caucasoids and especially more than Negroids. It is suggested that behavioral differences among human races arose because the more predictable environment faced by later emerging populations selected for increased brainsize, fewer and slower maturing offspring, greater parental care per each offspring, stronger pair bonds, and increased social organization.