This article criticizes the term "comorbidity" used to describe the overlap of developmental syndromes or disorders. Data from 179 school-age children are evaluated for criteria of seven disorders. Since fully 50 percent of the sample met the criteria for at least two diagnoses, the premise that these disorders are discrete categories on…

Noting a high incidence of learning disabilities among students with visual impairments, this article compares definitions of the two conditions. Common assessment approaches are discussed and those inappropriate for students with low vision or blindness are identified. Suggested intervention approaches include adaptation of the environment,…

Considers whether mental retardation can be considered a concomitant disability associated with learning disabilities or whether these are mutually exclusive categories. Emerging issues concerning definitions, classification, etiology, and lifelong development of these students are addressed. Also discussed are appropriate educational curricula,…

A discussion of language disorders that often occur with learning disabilities focuses on definitions, characteristics, alternative assessment methods, and service delivery models and interventions. Use of standardized test batteries, curriculum-based language assessment, and portfolio assessment is reviewed. Principles and methods to enhance…