Treatment teachers reported providing more incidental exposure to target vocabulary than control teachers (ES = .54)¶

Claim · All claims
Evidence · 1 study · causal r2 · q2 · i1 small
Currency · newest study 2024 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i1 In OLS regression of teacher survey data, treatment teachers self-reported a half standard deviation more incidental exposure to target vocabulary than control teachers (β1 = 0.54, p < .01; ES = .54). → Mosher 2024

Evidence¶

Mosher 2024¶

Mosher, D. M., Burkhauser, M. A., & Kim, J. S. (2024). Improving second-grade reading comprehension through a sustained content literacy intervention: A mixed-methods study examining the mediating role of domain-specific vocabulary. Journal of Educational Psychology, 116(4), 550–568. https://doi.org/10.1037/edu0000868

q2 · i1 · causal · r2

OLS regression of survey responses from the teacher subsample (N = 48 interviewed; survey completed by all 48), controlling for self-reported explicit teaching of target words and gender. The article reports "treatment teachers reporting a half standard deviation of greater exposure" (β1 = 0.54); the abstract labels this Effect Size [ES] = .54, a small effect. Survey results served as a fidelity proxy because COVID-19 closures prevented observations.

"Results (Table 6) indicated significant differences of self-reported incidental exposure between treatment and control conditions, with treatment teachers reporting a half standard deviation of greater exposure (𝛽𝛽1 = 0.54, 𝑆𝑆𝑆𝑆 = 0.20, 𝑝𝑝 < .01)."

Discussion¶

Related Claims¶

• Teachers with high incidental exposure described expanded opportunities for word use and connecting words to topics — related
• L2 learners pick up vocabulary incidentally from meaning-focused input, with reading the most-studied mode and listening yielding similar proportions of words learned — related
• Grade 1 and Grade 2 domain-specific vocabulary knowledge explained 69% of the MORE intervention's treatment effect on Grade 2 domain-specific reading comprehension — related