Reactions to H. Lee Swanson's paper "Toward a Metatheory of Learning Disabilities" are outlined, and his arguments are applied to reading disabilities, focusing on the importance of the scientific attitude, the misuse of ecological validity, interpretation of Thomas Kuhn's work, modularity and reading disability, and scientific progress…

Elementary and middle school children (n=105) completed measures of reading achievement and cognitive abilities. Factor analysis produced three empirically and theoretically derived factors, auditory processing, visual processing/speed, and memory. Together the three factors combined predicted 61 to 85% of the variance associated with different…