Lissitz and Samuelsen (2007) have proposed an operational definition of "validity" that shifts many of the questions traditionally considered under validity to a separate category associated with the utility of test use. Operational definitions support inferences about how well people perform some kind of task or how they respond to some kind of…

This article defines test bias and reviews research methods most aptly applied postpublication to educational and psychological tests. Best methods for estimating bias in criterion-related or predictive validity and determining bias in construct validity across groups are explained. (Author/JDD)

Forty-three adolescents with autism and developmental impairments were assessed with the Autism Diagnostic Interview (ADI), DSM-III-R (Diagnostic and Statistical Manual III, Revised) criteria, and the clinician's diagnosis. DSM-III-R criteria for autism exhibited low specificity and agreed poorly with the other two definitions, whereas the ADI was…

This study addressed the validity of using a five-state multifaceted approach to defining reading disabilities. Comparison of 204 reading-disabled (selected by criteria such as intraindividual differences and low achievement) and normally achieving junior high students on motivational, cognitive, and metacognitive variables (usually associated…

Arguing that reliable and valid dropout rate estimates are prerequisite to establishment of causal factors and intervention programs, this article examines differences in definitions of dropouts, computational methods, and the complexities in defining cohorts, as well as the importance of sample attrition. Several sources of error are discussed.…

Provides a framework for understanding the concept of validity and how it applies to simulation research. Extant tests of validity are discussed in terms of this framework, and a general schema for testing validity is proposed. (MBR)

This paper argues that using intelligence as an aptitude benchmark in defining reading disability conceals unsupported assumptions about educational potential and makes it difficult to differentiate the cognitive characteristics of dyslexic children from those of other poor readers. The use of a more educationally relevant aptitude measure such as…

This study of 640 twins with reading disability and 436 controls (mean age 12) examined external validity of the distinction between specific reading retardation and reading backwardness, in 3 domains: genetic etiology, sex ratio and clinical correlates, and neuropsychological profiles. There was no evidence of differential genetic etiology of the…

The quantitative synthesis of 89 correlations from 16 studies of behavioral ratings and classroom observations suggested significant problems in the areas of the construct of behavioral disorder and criterion-related validity of widely used measures of social behavior. A "components of variance" model is proposed to aid in educational decision…

Describes development of a comprehensive computer literacy assessment battery for K-12 curriculum based on objectives of a curriculum implemented in the Worldwide Department of Defense Dependents Schools system. Test development and field test data are discussed and a correlational analysis which assists in interpretation of test results is…