An investigation was made into causes for decreasing performance on the Common Entrance Examination, a test for admission into secondary schools, by candidates in Borno State, Nigeria. It had been noted that performance had begun to worsen after the introduction of universal primary education in 1976. To gather data addressing the issue, probable…

Tests of 172 fourth grade students in Zaria, Nigeria, supported the hypotheses that non-Western subjects' difficulties in judging depth in linear pictures are a function of individual perceptual organization, and that training could improve field independence and depth perception. Discusses child-rearing practices that may increase field…