Six separate experiments were undertaken to test the hypothesis that poor readers in first, second, and third grade would have more difficulty with simple perceptual discriminations than would good readers in the same grades. Various tasks were used in the experiments, including discrimination of line orientations, checking letters in three-letter…

A study was conducted to determine if attentional difficulties would be found in reading disabled children and to discover if increasing the complexity of a task would result in a relative decrease in the performance of the children. Twelve dyslexic boys, aged eight and nine, and 12 normal subjects similar in age and IQ participated in the study.…