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Li, Linlin; Ringstaff, Cathy; Tripathy, Rachel Grimes; Flynn, Kylie; Thomas, Larry – Grantee Submission, 2019
This study evaluated the efficacy of the Word Learning Strategies (WLS) supplementary program to improve elementary students' vocabulary skills and reading comprehension. The study used a multi-site cluster randomized, experimental design, which randomly assigned 92 4th grade classrooms (n=2558 students) from two cohorts to a treatment or control…
Descriptors: Elementary School Students, Vocabulary Development, Learning Strategies, Reading Comprehension
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Neuman, Susan B.; Cunningham, Linda – American Educational Research Journal, 2009
This study examines the impact of professional development on teacher knowledge and quality early language and literacy practices in center- and home-based care settings. Participants from 291 sites (177 centers; 114 home-based) in four cities were randomly selected to: Group 1, 3-credit course in early language and literacy; Group 2, course plus…
Descriptors: Effect Size, Professional Development, Child Care, Language Acquisition