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Miciak, Jeremy; Taylor, W. Pat; Stuebing, Karla K.; Fletcher, Jack M.; Vaughn, Sharon – Journal of Research on Educational Effectiveness, 2016
An appropriate estimate of statistical power is critical for the design of intervention studies. Although the inclusion of a pretest covariate in the test of the primary outcome can increase statistical power, samples selected on the basis of pretest performance may demonstrate range restriction on the selection measure and other correlated…
Descriptors: Educational Research, Research Design, Intervention, Statistical Analysis
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Solís, Michael; Scammacca, Nancy; Barth, Amy E.; Roberts, Garrett J. – Learning Disabilities: A Contemporary Journal, 2017
This experimental study examined the effectiveness of a text-based reading and vocabulary intervention with self-regulatory supports for 4th graders with low reading comprehension. Students with standard scores on the Gates MacGinitie Reading Test between 1.0 standard deviation (SD) and 0.5 SD below the normative sample were included (N=44) and…
Descriptors: Teaching Methods, Reading Instruction, Vocabulary Development, Grade 4
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Sharon Vaughn; Leticia R. Martinez; Jeanne Wanzek; Greg Roberts; Elizabeth Swanson; Anna-Mária Fall – Journal of Educational Psychology, 2017
Supporting the reading comprehension and content knowledge acquisition of English language learners (ELs) requires instructional practices that continue beyond developing the foundational skills of reading. In particular, the challenges ELs face highlight the importance of teaching reading comprehension practices in the middle grades through…
Descriptors: Course Content, Social Studies, Grade 8, Middle School Teachers