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Stallasch, Sophie E.; Lüdtke, Oliver; Artelt, Cordula; Brunner, Martin – Journal of Research on Educational Effectiveness, 2021
To plan cluster-randomized trials with sufficient statistical power to detect intervention effects on student achievement, researchers need multilevel design parameters, including measures of between-classroom and between-school differences and the amounts of variance explained by covariates at the student, classroom, and school level. Previous…
Descriptors: Foreign Countries, Randomized Controlled Trials, Intervention, Educational Research
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Lawrence, Joshua F.; Francis, David; Paré-Blagoev, Juliana; Snow, Catherine E. – Journal of Research on Educational Effectiveness, 2017
We investigate the impact of a relatively brief cross-curricular intervention, Word Generation, on middle school students' development of taught academic vocabulary. Students (n = 8382) in forty-four middle schools in three urban districts were randomly assigned to treatment or control conditions. Treatment teachers implemented the program with…
Descriptors: Intervention, Academic Discourse, Control Groups, Experimental Groups
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Vadasy, Patricia F.; Sanders, Elizabeth A.; Logan Herrera, Becky – Journal of Research on Educational Effectiveness, 2015
A multi-cohort cluster randomized trial was conducted to estimate effects of rich vocabulary classroom instruction on vocabulary and reading comprehension. A total of 1,232 fourth- and fifth-grade students from 61 classrooms in 24 schools completed the study. Students received instruction in 140 Tier Two vocabulary words featured in two…
Descriptors: Vocabulary Development, Grade 4, Grade 5, Elementary School Students
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Jitendra, Asha K.; Star, Jon R.; Dupuis, Danielle N.; Rodriguez, Michael C. – Journal of Research on Educational Effectiveness, 2013
This study examined the effect of schema-based instruction (SBI) on 7th-grade students' mathematical problem-solving performance. SBI is an instructional intervention that emphasizes the role of mathematical structure in word problems and also provides students with a heuristic to self-monitor and aid problem solving. Using a…
Descriptors: Mathematics Instruction, Grade 7, Middle School Students, Schemata (Cognition)
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Michael D. Coyne; Mary Little; D'Ann Rawlinson; Deborah Simmons; Oi-man Kwok; Minjun Kim; Leslie Simmons; Shanna Hagan-Burke; Christina Civetelli – Journal of Research on Educational Effectiveness, 2013
The purpose of this varied replication study was to evaluate the effects of a supplemental reading intervention on the beginning reading performance of kindergarten students in a different geographical location and in a different instructional context from the initial randomized trial. A second purpose was to investigate whether students who…
Descriptors: Reading Achievement, Program Effectiveness, Intervention, Kindergarten