Of 132 early literacy interventions evaluated by high-quality impact studies, 38 demonstrated effectiveness in at least one language or literacy outcome domain and 93 showed inconclusive effects¶

Claim · All claims
Evidence · 1 study · quant-synthesis r2 · q3
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? 38 of 132 interventions evaluated by high-quality impact studies significantly outperformed comparison groups in at least one outcome domain. → Sarah Herrera 2021 q3 i? 93 of 132 interventions demonstrated inconclusive effects, with performance statistically comparable to comparison groups on all assessed domains. → Sarah Herrera 2021

Evidence¶

Sarah Herrera 2021¶

Sarah Herrera, Beth M. Phillips, Yi-Chieh Newton, Jennifer L. Dombek, and James A. Hernandez. (2021). Effectiveness of Early Literacy Instruction: Summary of 20 Years of Research. Regional Educational Laboratory Southeast, REL 2021-084. https://ies.ed.gov/ncee/edlabs

q3 · i? · quant-synthesis · r2

Systematic review using WWC-modeled standards of 132 interventions from 109 high-quality experimental or quasi-experimental studies published 1997-2017. The review reports "38 demonstrated effectiveness in at least one language or literacy outcome domain relative to the comparison group"; all others except one showed inconclusive effects.

"Of the 132 interventions evaluated by high-quality impact studies, 38 demonstrated effectiveness in at least one language or literacy outcome domain relative to the comparison group."

Discussion¶

Related Claims¶

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• Language and early writing interventions showed larger effects on researcher-developed than standardized outcome measures, while phonological awareness, print knowledge, and decoding effects were comparable across measure types — a narrower finding that bears on this claim
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