This paper reviews literature supporting the notion that learning disabilities are presumed to be a result of central nervous system dysfunction. It focuses on the postmortem and neuroimaging studies that provide evidence of a neurological conceptualization of learning disabilities. (Author/JDD)

The paper summarizes several approaches to the identification of learning disability and then discusses the nature of learning disability in the context of competing hypotheses as possible explanations of insufficient or unsatisfactory achievement. Because learning disability may only be inferred as a cause of unsatisfactory learning, the…

Among conclusions of this review of findings regarding contemporary neuropsychology and cerebral hemisphere specialization as related to learning disabilities are: (1) differential specialization occurs very early; (2) anomalous hemispheric specialization is not necessarily associated with cognitive deficit; and (3) left- and right-hemisphere…

Fundamental assumptions concerning the cause of learning disabilities are described and criticized. At a broader level, research and theory in three different paradigms are discussed: (1) neuropsychological; (2) information processing; and (3) applied behavior analysis. Four recommendations for future progress in the conceptualization and…

The mechanisms of both language-based and non-language-based learning disabilities are presented within the framework of central nervous system development and the compromises to that development that arise from genetic, hormonal, antibody, medication, and postnatal compromises. Also reviewed is the need for a taxonomy of learning disabilities.…

This article highlights the scientific contributions of nineteenth-century German researchers in describing neuropsychologic dysfunction and in conceptualizing and cerebrally localizing clinical syndromes associated with learning disabilities. Noted are contributions of Pierre Paul Broca, Carl Wernicke, Ludwig Lichtheim, Hugo Karl Liepmann, B.…

The role of pharmacologic agents in the treatment of learning and behavior disorders in children is discussed with respect to the biological basis of these disorders. Illustrative studies dealing with autonomic reactivity and cortical excitability as reflected in the cortical evoked response are presented. The question of the combined effects of…

The article examines neuropsychological theories of behavior and considers their application to special education, with particular emphasis on learning disabilties. Among problems involved with the approach are difficulties communicating educationally relevant data and confusion over the validity and utility of the neuropsychological approach. (CL)

A theory of the development of anomalous dominance and its biological associations is explained and the literature is reviewed in an attempt to apply this theory to the study of autism. The review supported the increased incidence of left-handedness, learning disabilities, and immune disorders postulated by the theory. (Author/DB)

The article discusses stimulating motor development as it relates to learning difficulties with reference to the work of Dutch neurologist P. Mesker. It is concluded that disturbance in sensorimotor development is the most important cause of learning difficulties in the first years of elementary school. (SBH)

The article discusses the arithmetic achievement deficits of learning disabled students, cites research on cognitive factors involved, reviews the neurological evidence, and describes orientations focusing on cognitive psychology and the instructional context. Recent findings of an arithmetic task force from Columbia University are summarized. (CL)

Theory and research on the relation of lateral dominance to the causation of reading disability are reviewed. Both direct and indirect measures of cerebral hemisphere functioning are considered. (SBH)

Reviews recent neuroradiologic and brain imaging techniques in the assessment of learning disability. Technologies reviewed include computerized tomography; magnetic resonance imaging; electrophysiological and metabolic imaging; computerized electroencepholographic studies of evoked potentials, event-related potentials, spectral analysis, and…

The review provides a classification of learning disorders; current views on possible physical and chemical factors contributing to such disorders; neurodevelopmental requirements for learning to read, write, and spell; and a method for assessing neurodevelopment. Also noted are indications for the use of medication. (Author/DB)

The paper traces the development of an integrated model of cognition stemming from Soviet neuropsychology and reviews recent research on simultaneous and successive syntheses. Implications for mental retardation, learning disability, hyperactivity, and reading disability are given. (Author/CL)