Content analysis of the Columbia Mental Maturity Scale and the Test of Nonverbal Intelligence (TONI) revealed differences in the nature of perceptual and conceptual items. Both language-impaired and normal-language children performed significantly better on perceptual-type than conceptual-type items. The predominance of perceptual items was…

This manual is a guide to the special education diagnostic process and covers the various stages of evaluation, interpretation, diagnosis, prescription, and remediation. Test information includes: explanations of the most commonly used diagnostic tests, coverage of the areas measured by each test, interpretation of test patterns for commonly used…

The tests described in this index are used by the Institute for Developmental Studies in its principal areas of research and do not include recently developed tests. The research at the Institute is concerned with (1) the relationship of differing environments to language development, (2) classroom communication between teachers and children of…