Evidence extent for Voyager is moderate to large for alphabetics and small for comprehension, with no qualifying studies of fluency or general reading achievement¶

Claim · All claims
Evidence · 1 study · quant-synthesis r1 · q2
Currency · newest study 2007 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Two studies (12 schools, 611 students) addressed alphabetics; one study (4 schools, 213 students) addressed comprehension; none addressed fluency or general reading achievement. → Voyager Universal Literacy System® — WWC Intervention Report 2007

Evidence¶

Voyager Universal Literacy System® — WWC Intervention Report 2007¶

Voyager Universal Literacy System® — WWC Intervention Report. (2007). What Works Clearinghouse, U.S. Department of Education. https://ies.ed.gov/ncee/wwc/InterventionReport/538

q2 · i? · quant-synthesis · r1

WWC Extent of Evidence categorization (Appendix A5) based on number of studies and total sample size meeting standards with reservations. Of seven reviewed studies, five did not meet WWC evidence screens.

"The WWC considers the extent of evidence for Voyager Universal Literacy System ® to be moderate to large for alphabetics and small for comprehension. No studies that met WWC evidence standards with or without reservations addressed fluency or general reading achievement."

Discussion¶

Related Claims¶

• The evidence base for Read, Write & Type!™ is a single small-extent randomized trial, limiting confidence in the effectiveness ratings — related
• No studies meeting WWC standards addressed SSL effects on fluency, comprehension, or general reading achievement, and the extent of alphabetics evidence is small — related
• The Frechtling, Zhang, and Silverstein (2006) study showed a substantively important positive average alphabetics effect, while Hecht (2003) did not — a narrower finding that bears on this claim
• The WWC found Voyager Universal Literacy System® had potentially negative effects on comprehension — related
• The WWC found Voyager Universal Literacy System® had potentially positive effects on alphabetics for kindergarten students — related
• The evidence base for Little Books is small: only one study met WWC standards, addressing only general reading achievement, with no studies meeting standards for alphabetics, fluency, or comprehension — related