The Efficacy of Recasts in Language Intervention: A Systematic Review and Meta-Analysis

Author:

Cleave Patricia L.1,Becker Stephanie D.2,Curran Maura K.3,Van Horne Amanda J. Owen3,Fey Marc E.2

Affiliation:

1. Dalhousie University, Halifax, Nova Scotia, Canada

2. University of Kansas Medical Center, Kansas City

3. DeLTA Center, University of Iowa, Iowa City

Abstract

Purpose This systematic review and meta-analysis critically evaluated the research evidence on the effectiveness of conversational recasts in grammatical development for children with language impairments. Method Two different but complementary reviews were conducted and then integrated. Systematic searches of the literature resulted in 35 articles for the systematic review. Studies that employed a wide variety of study designs were involved, but all examined interventions where recasts were the key component. The meta-analysis only included studies that allowed the calculation of effect sizes, but it did include package interventions in which recasts were a major part. Fourteen studies were included, 7 of which were also in the systematic review. Studies were grouped according to research phase and were rated for quality. Results Study quality and thus strength of evidence varied substantially. Nevertheless, across all phases, the vast majority of studies provided support for the use of recasts. Meta-analyses found average effect sizes of .96 for proximal measures and .76 for distal measures, reflecting a positive benefit of about 0.75 to 1.00 standard deviation. Conclusion The available evidence is limited, but it is supportive of the use of recasts in grammatical intervention. Critical features of recasts in grammatical interventions are discussed. Supplemental Material https://doi.org/10.23641/asha.6170231

Publisher

American Speech Language Hearing Association

Subject

Speech and Hearing,Linguistics and Language,Developmental and Educational Psychology,Otorhinolaryngology

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