Tóm tắt
Summary. The present study investigated some relationships between age, socio‐economic status (SES), and cognitive task performance among 120 children from Grades 1 and 4. A battery of tasks differing in transformational requirements and ostensibly in cultural loading was administered to all children. Analyses of results indicate that low SES children were more handicapped in some tasks of so‐called reasoning ability when compared to middle SES children. But contrary to expectations, the test scores of the contrasted SES groups were more disparate in Grade 1 than in Grade 4. For the older age group, SES differences on the culturally loaded Peabody Picture Vocabulary Test (PPVT) were apparent, whereas differences on the culturally‐reduced Raven's Coloured Progressive Matrices were statistically non‐significant.
