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)

Morphometric analysis of magnetic resonance imaging scans revealed that, compared to nondisabled controls, the seven children with attention deficit hyperactivity disorder had a smaller corpus callosum. Results suggest that subtle differences may exist in the brains of these children and that deviations in normal corticogenesis may underlie the…

Research findings from autopsy studies, neuroimaging, functional imaging, and electrophysiological measures specific to dyslexia have provided a better understanding of the reading process, particularly as it applies to individuals with dyslexia. Evidence from these studies pertaining to the neurological origins of dyslexia is reviewed, and…

The article addresses the neuroimaging, electrophysiological, and postmortem evidence concerning the neurological basis of dyslexia and concludes that inconsistent findings may be related to limitations of investigative technologies. Correlates of reading ability and disability are discussed in a developmental-neuropsychological context.…

This article reviews Bakker's developmental neuropsychological model (the Balance Model) of reading development (EC 602 750), notes the need for validating research before employing these procedures in clinical practice, and raises some conceptual problems such as evidence that learning disability subtypes evolve over time. (Author/DB)

An overview is provided of the literature on genetic, biochemical, neurobehavioral, and neuroanatomical correlates of Attention-Deficit Hyperactivity Disorder (ADHD). Accumulating evidence suggests a neurological etiology and a possible genetic basis in most children. The role of the school psychologist in helping children with ADHD is discussed.…