Originally published in 1974, this volume is primarily devoted to what is known about human infancy from an ethological, evolutionary viewpoint. Included are discussions of pan-specific traits, presumably shared by all infants; individual genetic variations on these behaviours (as judged by twin-studies); sex differences, presumably shared by infants of all ethnic groups; and genetically based ethnic differences. However, the author favours neither biological determinism nor cultural determinism, and does not consider interactionism to be a viable solution. Instead, a monistic position is...