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Download full textProvasnik, Stephen; Malley, Lydia; Neidorf, Teresa; Arora, Alka; Stephens, Maria; Balestreri, Kathryn; Herz, Katie; Perkins, Robert; Tang, Judy H. – National Center for Education Statistics, 2019
"U.S. Performance on the 2015 TIMSS Advanced Mathematics and Physics Assessments: A Closer Look" expands upon the results described in NCES' [National Center for Education Statistics'] initial "Highlights" report on TIMSS Advanced. This new report provides in-depth analyses that (1) examine the demographics, school…
Descriptors: Elementary Secondary Education, Achievement Tests, Mathematics Achievement, Science Achievement
Deke, John; Wei, Thomas; Kautz, Tim – National Center for Education Evaluation and Regional Assistance, 2017
Evaluators of education interventions are increasingly designing studies to detect impacts much smaller than the 0.20 standard deviations that Cohen (1988) characterized as "small." While the need to detect smaller impacts is based on compelling arguments that such impacts are substantively meaningful, the drive to detect smaller impacts…
Descriptors: Intervention, Educational Research, Research Problems, Statistical Bias
