Sixty-five Kikuyu infants were developmentally evaluated (Bayley Test) at two-month intervals during the first year of life. Precocity was demonstrated for mental as well as motor test performance. Familial economic status was positively related to infant performance. Social and demographic variables contributed at least 25% to test score…

The work of four task forces on human deprivation is reported. Aspects of deprivation treated include psychosocial deprivation and personality development; influences of biological, psychological, and social deprivations upon learning and performance; socialization and social structure; and biological substrates of development and behavior. For…