This paper follows a line of logical argumentation to claim that what Samuel Messick conceptualized about construct validation has probably been misunderstood by some educational policy makers, practicing educators, and classroom teachers. It argues that, while Messick's unified theory of test validation aimed at (a) warning educational…

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…

Criticizes an article by Messick (1989) that emphasizes consequential validity (the potential and actual social consequences of test score interpretation and use) as a component of construct validity. Shows the profitability of separating the construct-indicator link from the indicator-score link, and the greater importance of the former.…

The implications for educational and employment testing of recent measurement, social, and policy issues are compared and contrasted. Changes are proposed relative to technical conceptualization of assessment, an increased focus on performance-based evaluation, and expanded expectations and uses of assessment. (SLD)