The author cites issues involved in defining learning disabilities and suggests that it is a subcategory of underachievement. He summarizes his ongoing attempt to identify underachievers in kindergarten through a regression-referenced approach. (CL)

This article presents an operational, inclusionary definition of dyslexia constructed by the Orton Dyslexia Society Research Committee and others. Each clause of the definition is explained in terms of relevant research findings. The definition attempts to identify unique factors of reading disability, independent of its common association with…

It is argued the proposed definition of dyslexia is restricted to developmental dyslexia in which a student struggles to learn to read and does not apply to acquired dyslexia in which a previously normal reader loses reading functions. The need for classification schemes for defining specific learning disabilities is emphasized. (Contains…