Cognitive Abilities Test (CogAT) is one of the most frequently used gifted identification tools. In this meta-analytic study, we investigated empirical evidence of the validity of CogAT, in relation to different types of instruments. After reviewing 1,480 studies, a total of 24 with 33 effect sizes were included in the meta-analysis. According to…

Background: The Language Development Survey (LDS) and the MacArthur-Bates Communicative Development Inventories (MB-CDI) are two parental report forms that have been productive in providing data on early child language during the past 30 years. The instruments have been used both in studies relating to typical developing children and in screening…

The basic assumptions underlying the development of early identification procedures for at-risk children are reviewed. The effectiveness of screening measures designed to identify educationally "at-risk" children is critically examined. It is concluded that there is a general lack of evidence for the usefulness of such instruments. (Author)

Describes the Dyslexia Early Screening Test (DEST) and the Cognitive Profiling System, both normed and designed to be administered to children four years and older. Reliability and validity of the tests are discussed, as well as their use to identify children at risk before they fail. (Author/CR)

The reliability, validity, and clinical utility of the Asperger Syndrome Diagnostic Scale in the diagnosis of pervasive developmental disorders are reviewed. While the measure holds promise as a research tool, there appears little evidence that it can distinguish among the variety of types of pervasive developmental disorders, or diagnose Asperger…

Procedures that have been used for assessing a discrepancy between ability and achievement of students suspected to have a learning disability are examined. Methodological deficiencies and/or unavailability of conclusive validity evidence are cited to support the conclusion that all of the procedures are worthless for screening purposes. (SEW)

This paper reviews the literature on assessment bias issues in special education. While assessment instruments yielding a single IQ score are seen as useful components in a comprehensive multifactored assessment, and are the primary tool of diagnosis for mental retardation, they are found to be irrelevant when applied to students with learning…

The 19 chapters of this text on assessment in special education are divided into two parts. Part 1 discusses basic concepts in assessment in special education. Part 2 addresses the special education process by describing steps in the assessment continuum. Individual chapters examine the following topics: (1) an introduction to assessment; (2)…

This report synthesizes the key themes and ideas discussed at two 1-day workshops addressing issues in the use of IQ tests in special education evaluation and placement. The first section considers the background and legal context of the issue. The next section looks at IQ tests in school settings. Key ideas raised include the importance of never…