Presents both logical and empirical evidence to illustrate that the conventional scoring algorithm for ranking tasks significantly underestimates the initial level of group ability and that Slevin's alternative scoring algorithm significantly overestimates the initial level of ability. Presents a modification of Slevin's algorithm which authors…

After an interview procedure used with educable mentally retarded children is described, the findings of an examination of some collected interview data are reported in this study of the Computer Based Project for the Evaluation of Media for the Handicapped. An ex post facto analysis revealed a moderately high correlation between interviewer…

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…