The Blind Learning Aptitude Test (BLAT), an individual test, is described. Distinction is made between product and process sampling in testing for learning aptitude. Standardized upon 961 educationally blind children, it has high reliability; and its validity, particularly with respect to the more complex school learnings, is clearly indicated.…

The author's response to H. Reed's paper (EC 115 148) on the nature of the relationship between biological defects and educational attitude and achievement refutes the relevance of biological knowledge to education, and contends the neuropsychological test data are of doubtful validity and may work against the academic interests of the student.…

The validity of a learning potential assessment procedure with institutionalized moderately and severely retarded adolescents and adults was examined with 38 Ss. (Author)

The author's response to H. Reed's paper (EC 115 148) on the nature of the relationship between biological defects and educational aptitude and achievement discusses, from the viewpoint of a physician, the issues of relevance, test validity, and cooperation and understanding between neuropsychologists and special educators. (For other responses…

The Detroit Tests of Learning Aptitude, 3rd Edition (DLTA-3) is a battery of 11 subtests that measure different but interrelated mental abilities. These are clinically assessed by the battery, which further attempts to delineate the factors that contribute to Spearman's factor for general intelligence. The DLTA-3 has age norms expressed for test…