Descriptive analyses of socially important or theoretically interesting phenomena and trends are a vital component of research in the behavioral, social, economic, and health sciences. Such analyses yield reliable results when using representative individual participant data (IPD) from studies with complex survey designs, including educational…

The methodology suggested in this paper employs a selection rule for identifying group members that generates groups that have a range of achievement within groups but equal distribution of raw scores between. (Author/BW)

Describes some of the "big ideas" of Richard E. Snow about aptitude, person-situation transaction, and test validity. Also describes the design of a high school study undertaken to explore some of Snow's ideas further and introduces the articles of this special issue. (SLD)

The development of curriculum frameworks for mathematics and science was an essential first step in the Third International Mathematics and Science Study (TIMSS). The frameworks have served as guides for the design of the achievement testing component of TIMSS, and as the foundation upon which the curriculum analysis component of the study is…

With the growing interest in comparing student achievement state by state, there is a need to develop better techniques for making such comparisons. Approaches available now, particularly the use of Scholastic Aptitude Test (SAT) and American College Test (ACT) scores, have obvious shortcomings but nonetheless continue to be prominent because…

The conceptual framework for the instructionally sensitive assessment that guided the analyses of data from the Second International Mathematics Study (SIMS) are described. The intellectual rationale for the project effort and the current draft version of the guiding conception of "instructionally sensitive psychometrics" are discussed,…