The authors encourage those in the field of school psychology to consider the use of learning disabilities assessment practices in relation to specific American Psychological Association and National Association of School Psychologists ethical codes and in regard to the American Educational Research Association, American Psychological Association,…

The conclusion that learning disabled children have a deficit in perceptual organization is not accepted because of two major methodological problems. Dean refutes this criticism showing that learning disabled children have a perceptual organization deficit when compared with emotionally disturbed children. (Author/BEF)

Research procedures used to evaluate the intelligence of children with specific language impairment are reviewed. Almost half of the 167 studies did not include adequate descriptions of intelligence assessment. (Author/JDD)

Problems with experimental research on mental retardation include: (1) difficulties with defining mental retardation; (2) neglect in demonstrating causal relationships; and (3) reliance on methodology not necessarily appropriate for defining the criteria of retardation. The author advocates abandoning definitions based on intelligence tests and…

This research is, in part, a study of a method of differentiating between two different types of retardation (the exogenous or brain injured and the endogenous or non-brain injured). However, this paper is also an example of the evaluation of a research problem, for it incorporates data and information from three different studies, each of which…