Literacy Express shows no discernible effects on cognition and math for preschool children¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q3
Currency · newest study 2010 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Lonigan et al. (2005) found no statistically significant or substantively important differences on three cognition measures. → Literacy Express 2010 q3 i? PCER Consortium (2008) found no statistically significant or substantively important differences on three math measures. → Literacy Express 2010 (2)

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 · i? · causal · r2

Florida/California randomized trial (722 children) assessing cognition with Pre-CTOPPP Non-Word Repetition, Word Span, and Rapid Object Naming subtests; no significant differences. Average improvement index +1 percentile point.

"The authors report, and the WWC confirms, that the differences between the Literacy Express group and the control group were not statistically significant or substantively important for any of these three measures."

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 · i? · causal · r2

PCER Florida randomized trial (188 children analyzed) assessing math with WJ-III Applied Problems, CMA-A Composite, and Shape Composition; no significant differences. Average improvement index 0 percentile points.

"The authors report, and the WWC confirms, that differences between the Literacy Express group and the control group are not statistically significant or substantively important on any of these measures."

Discussion¶

Related Claims¶

• Literacy Express has positive effects on phonological processing for preschool children, with significant effects in two of three studies — related
• Literacy Express has positive effects on print knowledge for preschool children, with significant effects in two of three studies — related
• Literacy Express has positive effects on oral language for preschool children, with significant effects in two of three studies — related