Even if national and international assessments are designed to be comparable, subsequent psychometric analyses often reveal differential item functioning (DIF). Central to achieving comparability is to examine the presence of DIF, and if DIF is found, to investigate its sources to ensure differentially functioning items that do not lead to bias.…

Responds to the criticism offered by M. Scriven of the call for a radical new approach to teacher evaluation made by M. Roth and K. Tobin, noting that more builders of evaluation theory are needed, especially builders of theory that can be useful as the starting point for change. (SLD)

Describes using Vee maps and concept maps to guide student investigations and for student assessment. Technique focuses on following questions: what do I want to find out? what do I know? how do ideas connect? how do I go about finding answer to my question? what can I make of my findings? and what did I observe and measure? (PR)

In education research, a polar distinction is frequently made to describe and produce different kinds of research: "quantitative" versus "qualitative." In this article, the authors argue against that polarization and the associated polarization of the "subjective" and the "objective," and they question the attribution of generalizability to only…

Data from a study of learning conducted with 26 seventh and eighth graders are used to show the highly heterogeneous and contingent nature of students' responses to lever problems. A framework is proposed to explain variations in cognitive performance across situations and to critique some of the assumptions underlying assessments. (SLD)