The relationships between processing speed, intelligence, and school achievement were analyzed on a sample of 184 Russian 16-year-old students. Two speeded tasks required the discrimination of simple geometrical shapes and the recognition of the presented meaningless figures. Raven's Advanced Progressive Matrices and the verbal subtests of…

Prekindergarten children were given a perceptual discrimination task using letterlike forms and their transformations. The magnitude of the relation to subsequent achievement in reading varied according to the difficulty of a transformation. More easily discriminated transformations were associated with higher correlations. Patterns were similar…

Thirty-five second-grade learning disabled children participated in a visual information processing training program designed to teach analysis of visual material into component parts, systematic scanning of visual arrays, pick-up, description, and memory storage of distinctive information, and efficient solution of visual match-to-sample…