Researchers across many fields have called for greater attention to heterogeneity of treatment effects--shifting focus from the average effect to variation in effects between different treatments, studies, or subgroups. True heterogeneity is important, but many reports of heterogeneity have proved to be false, non-replicable, or exaggerated. In…

Beginning with a reference to living in a time of both uncertainty and opportunity, this article presents a discussion of key areas where shared understanding is needed if we are to successfully realize the design and use of high quality, valid assessments of science. The key areas discussed are: (1) assessment purpose and use, (2) the nature of…

Attempts to determine if the measurement of young children's learning is enhanced when the modality used in the testing is congruent with that employed in the instructional phase. More specifically, does a test consisting of words for objects provide a valid index of pupil growth when a different medium is used in the teaching of a specified…

Criticizes the use of test-retest correlations, differences between means, and other group effects in studies attempting to evaluate the relative stability of learning styles. Examines the use of the "Learning Style Inventory" and the "Learning Style Questionnaire." Recommends that researchers directly analyze the stability and…

The following papers are presented in this book: "Self-Directed Learning: Consensus and Conflict" (Long); "Challenges in the Study and Practice of Self-Directed Learning" (Long); "A Conceptual Model of Autodidactism" (Tremblay, Theil); "Functional and Dysfunctional Uses of Self-Directedness in Adult…

The "No Child Left Behind Act" of 2001 crystallized the concern for accountability in education. National testing was mandated as a way to improve the "broken" educational system. Publicly funded early education programs were not spared from such testing. While the positive effects of high-quality early education on children's…