We review the evolution of the conceptualisation of dyslexia and along with it the current, 21st century definition of dyslexia. Our starting point is the seminal report by Pringle Morgan in 1896, followed by early 20th century reports by Hinshelwood, and continuing with concepts of brain injury and minimal brain dysfunctions then to the emergence…

This article provides a brief overview of the various areas of research that have served to clarify the condition of dyslexia. Using topics and content appearing in A. L. Benton and D. Pearl's (1978) text, Dyslexia: An Appraisal of Current Knowledge, as the point of departure, evolution of the definitions of dyslexia is traced to the current and…

Points out that many students with reading problems are categorized as dyslexic" or minimally brain damaged," while little attention is paid to techniques needed to remediate the difficulty, and stresses the need for operational definitions. (RW)

This article uses a self-organizing systems (SOS) framework to explain the complexity of learning disabilities (LD) and suggest that traditional classification schema may be inadequate. It explains principles of self-organizing systems and reviews research concerning reading and math disabilities and the roles of language, attention, working…