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Direct linkTheobald, Elli – CBE - Life Sciences Education, 2018
Discipline-based education researchers have a natural laboratory--classrooms, programs, colleges, and universities. Studies that administer treatments to multiple sections, in multiple years, or at multiple institutions are particularly compelling for two reasons: first, the sample sizes increase, and second, the implementation of the treatments…
Descriptors: Educational Research, Hierarchical Linear Modeling, Program Implementation, Predictor Variables
Download full textWendler, Cathy; Feigenbaum, Miriam; Escandón, Mérida – College Entrance Examination Board, 2001
The SAT Program undertook two studies aimed at evaluating the impact of allowing students to indicate more than one ethnic/racial category. Results of this study indicated that there is little impact on DIF [differential item functioning] analyses when different definitions of ethnic/racial classifications are used compared to traditionally…
Descriptors: Group Membership, Definitions, Cluster Grouping, Racial Differences
Hand, Carol A.; Prather, James E. – 1986
This paper investigates the problems of the impact of grouping on measuring academic performance. It focuses on inferences made from the group level to the individual level. Data for a large state college system with over 30 individual colleges is used. The problem of aggregation bias is studied using the analysis of covariance and is related to…
Descriptors: Academic Achievement, Analysis of Variance, Cluster Grouping, College Entrance Examinations
