Professional review teams in nine Third World countries assessed a sample of children referred as probable cases (or as controls) from a door to door household survey of 1000+ children aged 3 to 9 years. Examines the criteria used by the teams in determining whether or not the children should be classified as severely mentally handicapped. (RWB)

British and Zambian children were compared on their abilities to reproduce patterns, from tactile and visual presentations, by modeling, drawing, and gesturing. Age, sex, and intelligence variables were analyzed. Results suggested that cross-cultural differences in these tasks reflect differences in specific perceptual skills rather than broad…