As Paul Newton so ably demonstrates, the concept of validity is both important and problematic. Over the last several decades, a consensus definition of validity has emerged; the current edition of "Standards for Educational and Psychological Testing" notes, "Validity refers to the degree to which evidence and theory support the interpretations of…

The 1999 "Standards for Educational and Psychological Testing" defines validity as the degree to which evidence and theory support the interpretations of test scores entailed by proposed uses of tests. Although quite explicit, there are ways in which this definition lacks precision, consistency, and clarity. The history of validity has taught us…

Paul E. Newton's "Clarifying the Consensus Definition of Validity" addresses the single most important, yet stubbornly protean, value in educational and psychological assessment. "Standards for Educational and Psychological Testing" (American Educational Research Association, American Psychological Association, & National Council on Measurement in…

In the United States, when English language learners (ELLs) are tested, they are usually tested in English and their limited English proficiency is a potential cause of construct-irrelevant variance. When such irrelevancies affect test scores, inaccurate interpretations of ELLs' knowledge, skills, and abilities may occur. In this article, we…

The American Psychological Association, in the late 1940s, began work to establish a code of ethics to include and address the needs of members in scientific and applied fields. Out of the ethics work emerged a set of standards for evaluating psychological tests. Four categories, or types of validity, were identified: content, predictive,…

The traditional concept of validity divides it into three separate types; content, criterion, and construct validities. This view is fragmented and incomplete, failing to take into account evidence of the value implications of score meaning as a basis for action and of the social consequences of score use. The new unified concept of validity…

Scores on the Wechsler Adult Intelligence Scale (WAIS) were compared with reevaluation scores obtained four years later on the WAIS-Revised for a group of 108 mildly and moderately retarded adults. The moderately retarded subgroups (N=22) demonstrated significantly higher WAIS-R intelligence quotients. Implications for use of the WAIS-R are…

Critiques the 1990 revision of the Slosson Intelligence Test. The SIT-R is an untimed, individually administered screening instrument that assesses the mental ability of children and adults. Many of the problems with the original version have been addressed in the revised version, but with varying success. (LKS)

Presents nine articles dealing with aspects of testing and the role of the school counselor. Topics include interpreting test scores, testing problems and solutions, developing tests to predict dropping out, sex bias in vocational testing, detecting bias in standardized tests, assessments of reentry adults, and interest tests for adults. (JAC)

Data from the grade 8 and grade 10 science tests of the National Education Longitudinal Study of 1988 (NELS:88) were used to demonstrate that achievement tests are multidimensional and that using psychologically meaningful subscores in national surveys can enhance test validity and usefulness. (SLD)

This study demonstrates that the validity and usefulness of mathematics achievement tests can be improved by defining psychologically meaningful subscores that yield differential relations with student, teacher, and school variables. The eighth- and tenth-grade mathematics tests from the National Education Longitudinal Study of 1988 (NELS:88) were…