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Ramezanali, Nasrin; Uchihara, Takumi; Faez, Farahnaz – TESOL Quarterly: A Journal for Teachers of English to Speakers of Other Languages and of Standard English as a Second Dialect, 2021
This meta-analysis examined the effectiveness of an additional gloss mode in single versus dual and dual versus triple glossing on second language (L2) learners' word learning. In total, 22 studies, providing 26 independent effect sizes, were coded, and 11 moderator variables including quality of data sample, learner variables, gloss features,…
Descriptors: Instructional Effectiveness, Second Language Learning, Vocabulary Development, Meta Analysis
Bloom, Howard S.; Weiland, Christina – MDRC, 2015
This paper uses data from the Head Start Impact Study (HSIS), a nationally representative multisite randomized trial, to quantify variation in effects of Head Start during 2002-2003 on children's cognitive and socio-emotional outcomes relative to the effects of other local alternatives, including parent care. We find that (1) treatment and control…
Descriptors: Program Evaluation, Program Effectiveness, Early Intervention, At Risk Students
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Elleman, Amy M.; Lindo, Endia J.; Morphy, Paul; Compton, Donald L. – Journal of Research on Educational Effectiveness, 2009
A meta-analysis of vocabulary interventions in grades pre-K to 12 was conducted with 37 studies to better understand the impact of vocabulary on comprehension. Vocabulary instruction was found to be effective at increasing students' ability to comprehend text with custom measures (d = 0.50), but was less effective for standardized measures (d =…
Descriptors: Preschool Education, Elementary Secondary Education, Vocabulary, Vocabulary Development