This article describes the history, evidence warrants, and evolution of the Center for Research on Evaluation, Standards, and Student Testing's (CRESST) model-based assessments. It considers alternative interpretations of scientific or practical models and illustrates how model-based assessment addresses both definitions. The components of the…

The purpose of this article is to describe and demonstrate a three-step process of using differential distractor functioning (DDF) in a post hoc analysis to understand sources of differential item functioning (DIF) in multiple-choice testing. The process is demonstrated on two multiple-choice tests that used complex alternatives (e.g., "No…

Develops a conceptual framework that addresses score comparability for performance assessments, adaptive tests, paper-and-pencil tests, and alternate item pools for computerized tests. Outlines testing situation aspects that might threaten score comparability and describes procedures for evaluating the degree of score comparability. Suggests ways…

In this article, I specify a conceptual framework for test validity research on content assessments taken by English language learners (ELLs) in U.S. schools in grades K-12. This framework is modeled after one previously delineated by Willingham et al. (1988), which was developed to guide research on students with disabilities. In this framework…

Discusses the provision of accommodations in admissions testing and in educational programs, the test score flagging practices that impact admissions testing, validity concerns, and issues surrounding fairness and compliance with federal disability laws for such practices. Some conclusions are drawn about the legality of the use of flagged test…

Discusses the intellectual history supporting the use of educational testing and describes four current tensions in testing: (1) learning and change versus measurement models; (2) quality of information and policy use; (3) precision versus utility; and (4) individual attainment versus standardized attainment. (SLD)

Discusses the long-term estrangement of psychology and educational testing, a breach that occurred as a result of differences in the goals of experimental psychologists and correlational psychologists who studied the measurement of aptitude and ability. Discusses the development of a new field merging modern knowledge of cognition and learning and…

The two articles in this special section, combined with two previous articles, discuss the use of portfolios in large-scale assessment. Ten years ago, there was great interest in portfolio assessment in state testing programs, but no large-scale program relies on portfolios at the present time. These articles continue to consider their uses. (SLD)