Reports findings of a 2-phase extensive and intensive social psychiatric study of 3-15 yr. old children (N - 1716 and N - 197, respectively) from 3 villages in Central Sudan. Ss showed few pronounced symptoms in spite of organic stress factors such as illness and infections with cerebral symptoms. Important factors in individual behavior disturbances were: urinary tract infections, absence of overstimulation and noise, oral tratification, upbringing practice, absence of temptation, strict social control, and genetic factors. Findings were interpreted to mean (1) village environment makes small demands on the functional ability of children; (2) homogeneous culture offers the individual a static well-defined role, and strong support through extended family; and (3) collective forms of defense help the individual cope with anxiety. (6 p. ref.)