Earobics® has positive effects on alphabetics for K–3 beginning readers, based on four WWC-reviewed studies¶

Claim · All claims
Evidence · 1 study · quant-synthesis r2 · q3 · i2 medium
Currency · newest study 2009 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i2 Across four studies meeting WWC standards, Earobics® showed positive effects on alphabetics, with a domain average effect size of 0.49 and an average improvement index of +25 percentile points. → What Works Clearinghouse 2009

Evidence¶

What Works Clearinghouse 2009¶

What Works Clearinghouse. (2009). WWC Intervention Report: Earobics®. U.S. Department of Education, What Works Clearinghouse. https://www.earobics.com

q3 · i2 · quant-synthesis · r2

WWC synthesis of four studies (two RCTs, two meeting standards with reservations) totaling 246 K–3 students. Appendix A3.1 prints the domain average effect size for alphabetics as 0.49 with an improvement index of +25, which the report summarizes as "The average improvement index for alphabetics is +25 percentile points across the four studies."

"Domain average for alphabetics across all studies 9 0.49 na +25"

Discussion¶

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