Integrated literacy and content-area instruction significantly improves vocabulary in the elementary years (g = 0.91)¶
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Evidence · 1 study · quant-synthesisr2·q3·i3large
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person
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q3 i3 Students receiving integrated literacy and content-area instruction showed significant improvement in vocabulary, with an overall effect of g = 0.91 across 36 outcome measures. → HyeJin Hwang 2021
Evidence¶
HyeJin Hwang 2021¶
HyeJin Hwang, Sonia Q. Cabell & Rachel E. Joyner (2021). Effects of Integrated Literacy and Content-area Instruction on Vocabulary and Comprehension in the Elementary Years: A Meta-analysis. Scientific Studies of Reading. https://doi.org/10.1080/10888438.2021.1954005
q3 · i3 · quant-synthesis · r2
Random-effects meta-analysis (Robumeta, robust variance estimation) of 35 (quasi)experimental studies involving 13,289 students in K-5. The pooled vocabulary effect was "g = 0.91" with CI [.34, 1.45], significant at p < .01; heterogeneity was high (I2 = 91.82).
"Students who received integrated literacy and content-area instruction showed improvement in vocabulary (the number of the outcome measures [n] = 36, g = 0.91, 95% confidence interval [CI] = [.34, 1.45]). The effect size was significant (p < .01) and large based on Kraft's (2020) benchmarks"
Discussion¶
Related Claims¶
- Integrated literacy and content-area instruction significantly improves comprehension, including on standardized measures (g = 0.40 overall; g = 0.25 standardized) — related
- Integrated instruction did not significantly improve standardized vocabulary outcomes — related
- Integrated instruction significantly improves content knowledge of taught science and social studies material (g = 0.89), but not on standardized knowledge measures — related
- Integrating oral and written English language instruction into content-area teaching shows positive impacts on content-area acquisition in five RCTs — related
- No significant moderators of effects among research design features or intervention characteristics — related
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