Claims

Dialogic Reading's average oral-language improvement index is +19 percentile points, ranging from –6 to +48 across findings

Claim · All claims
Evidence · 1 study · quant-synthesis r? · q3
Currency · newest study 2007 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q3 i? The WWC-computed average improvement index for oral language is +19 percentile points across the five studies, with individual findings ranging from –6 to +48 percentile points. → WWC Intervention Report: Dialogic Reading 2007

Evidence

WWC Intervention Report: Dialogic Reading 2007

WWC Intervention Report: Dialogic Reading. (2007). What Works Clearinghouse, U.S. Department of Education, Revised February 8, 2007. https://ies.ed.gov/ncee/wwc

q3 · i? · quant-synthesis · r?

WWC synthesis computing improvement indices (difference in percentile rank between average intervention and comparison students) across five studies of Dialogic Reading in center-based settings; the review reports an average of "+19 percentile points" with a wide range across findings. No standardized effect size is printed for this aggregate.

"The average improvement index for oral language is +19 percentile points across the five studies, with a range of –6 to +48 percentile points across findings."

Discussion

Learner Variables

- Dialogic Reading Improves Language Outcomes — the general claim this finding bears on, with the studies behind it

Page metadata
Field Value
type claim
id dialogic-reading-oral-language-improvement-index
title Dialogic Reading's average oral-language improvement index is +19 percentile points, ranging from –6 to +48 across findings
description Dialogic Reading's average oral-language improvement index is +19 percentile points, ranging from –6 to +48 across findings
status review
evidence_strength moderate
newest_evidence 2007
generated by process:wiki-ingest on 2026-10-07
trust unverified — no one has confirmed this page's content
sources 1 — wwc-intervention-report-dialogic-reading-2007

Frontmatter is the page's machine-readable record — see the Schema & Guide.