Literacy Express has positive effects on print knowledge for preschool children, with significant effects in two of three studies¶

Claim · All claims
Evidence · 1 study (3 entries) · causal r2 · q3 · i1–i2
Currency · newest study 2010 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i2 Farver, Lonigan, and Eppe (2009) found a statistically significant positive effect size of 0.64 on print knowledge. → Literacy Express 2010 q3 i1 Lonigan et al. (2005) found a statistically significant and substantively important positive effect size of 0.32 on print knowledge. → Literacy Express 2010 (2) q3 i? PCER Consortium (2008) found no statistically significant differences on print knowledge measures, though a substantively important effect of 0.30 on WJ-III Letter-Word Identification. → Literacy Express 2010 (3)

Evidence¶

Literacy Express 2010¶

Literacy Express. (2010). WWC Intervention Report: Literacy Express. U.S. Department of Education, What Works Clearinghouse. https://ies.ed.gov/ncee/wwc/InterventionReport/288

q3 · i2 · causal · r2

In the Los Angeles Head Start randomized trial (94 children analyzed), the Pre-CTOPPP Print Knowledge subtest showed a printed effect size of 0.64 favoring the combined Literacy Express groups over High/Scope control.

"Their analyses showed, and the WWC confirmed, a statistically significant positive effect of 0.64 when comparing the Literacy Express group and the control group."

Literacy Express 2010 (2)¶

Literacy Express. (2010). WWC Intervention Report: Literacy Express. U.S. Department of Education, What Works Clearinghouse. https://ies.ed.gov/ncee/wwc/InterventionReport/288

q3 · i1 · causal · r2

In the 48-preschool Florida/California randomized trial (722 children), the Pre-CTOPPP Print Knowledge subtest showed a printed effect size of 0.32 favoring Literacy Express over standard curricula.

"Their analyses showed, and the WWC confirmed, a statistically significant and substantively important positive effect of 0.32 when Literacy Express was compared to the control group curriculum."

Literacy Express 2010 (3)¶

Literacy Express. (2010). WWC Intervention Report: Literacy Express. U.S. Department of Education, What Works Clearinghouse. https://ies.ed.gov/ncee/wwc/InterventionReport/288

q3 · i? · causal · r2

In the PCER Florida randomized trial (188 children analyzed), TERA-3, WJ-III Letter-Word Identification, and WJ-III Spelling showed no statistically significant differences; the 0.30 Letter-Word effect was not significant.

"The authors report, and the WWC confirms, that differences between Literacy Express and the control group curriculum are not statistically significant on any of these measures, although there is a substantively important effect of 0.30 on the WJ-III Letter-Word Identification subtest."

Discussion¶

Learner Variables¶

• Alphabet Knowledge and Print Awareness — outcome: instruction changes it

Related Claims¶

• Literacy Express shows no discernible effects on cognition and math for preschool children — related
• Literacy Express has positive effects on oral language for preschool children, with significant effects in two of three studies — related
• Literacy Express has positive effects on phonological processing for preschool children, with significant effects in two of three studies — related
• Headsprout Early Reading has a statistically significant positive effect on the print knowledge of at-risk preschool children — related