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…

To better assess infant behavior and development in developing countries, cross-cultural psychologists need to more systematically address the following issues: (1) demographic constraints; (2) risk factors; (3) infant care; and (4) the transfer of Western technology to the developing world. (Author/BJV)