This study was designed to compare the performance on selected intelligence tests of a group of Canadian Indian children who had never been to school with the performance of a similar group of children who were attending school regularly. (Author/RK)

Item components that might contribute to the difficulty of items on the Raven Colored Progressive Matrices (CPM) and the Standard Progressive Matrices (SPM) were studied. Subjects providing responses to CPM items were 269 children aged 2 years 9 months to 11 years 8 months, most of whom were referred for testing as potentially gifted. A second…