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Download full textXu, Zeyu; Nichols, Austin – National Center for Analysis of Longitudinal Data in Education Research, 2010
The gold standard in making causal inference on program effects is a randomized trial. Most randomization designs in education randomize classrooms or schools rather than individual students. Such "clustered randomization" designs have one principal drawback: They tend to have limited statistical power or precision. This study aims to…
Descriptors: Test Format, Reading Tests, Norm Referenced Tests, Research Design
Mandinach, Ellen B.; Bridgeman, Brent; Cahalan-Laitusis, Cara; Trapani, Catherine – College Board, 2005
The effects of extended time on SAT Reasoning Test™ performance are examined. The study explored the impact of providing standard time, time and a half (1.5 time) with and without specified section breaks, and double time without specified section breaks on the verbal and mathematics sections of the SAT®. Differences among ability, disability, and…
Descriptors: College Entrance Examinations, Standardized Tests, Timed Tests, Disabilities
