Discusses the research debate over the question whether intelligence diminishes as a function of birth order. Presents a study of Zimbabwean children confirming the general downward trend of intelligence as a function of birth order. Addresses the influence of family size. (DB)

Examines whether differences in the functional strategies of texts written by English-speaking children of concrete and low formal operations levels of intelligence also exist in texts written by Polish-speaking children. Studies fifth and eighth grade elementary school children. Concludes that formal operational subjects were better able to…