VIP produces a statistically significant effect on Word Mastery (taught-word definition selection) for English language learners, effect size 1.03¶
Claim · All claims
Evidence · 1 study · causalr2·q3·i3large
Currency · newest study 2006 · 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 i3 The Word Mastery impact of VIP was statistically significant, with an effect size of 1.03 and an improvement index of +35 percentile points. → Vocabulary Improvement Program for English Language Learners and Their Classmates 2006
Evidence¶
Vocabulary Improvement Program for English Language Learners and Their Classmates 2006¶
Vocabulary Improvement Program for English Language Learners and Their Classmates. (2006). What Works Clearinghouse Intervention Report, U.S. Department of Education. http://www.brookespublishing.com/store/books/lively-6342/index.htm
q3 · i3 · causal · r2
In the WWC analysis of the English language learner subsample of the Carlo et al. (2004) trial, the Word Mastery measure (36 curriculum-taught target words with four-definition selection) showed effect size 1.03, mean difference 0.40, statistically significant at α = 0.05, improvement index +35. Multiple word meanings (0.59) and word association (0.44) were "substantively positive".
"The Word Mastery impact was statistically significant; the multiple word meanings and word association impacts were substantively positive."
Discussion¶
Related Claims¶
- VIP shows no statistically significant or substantively important impacts on PPVT-R and Morphology outcomes for English language learners — related
- VIP shows potentially positive effects on reading achievement for fifth-grade English language learners (effect size 0.50, not statistically significant) — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
vip-word-mastery-significant-effect |
title |
VIP produces a statistically significant effect on Word Mastery (taught-word definition selection) for English language learners, effect size 1.03 |
description |
VIP produces a statistically significant effect on Word Mastery (taught-word definition selection) for English language learners, effect size 1.03 |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2006 |
generated |
by process:wiki-ingest on 2026-10-07 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — vocabulary-improvement-program-for-english-language-learners-and-their-classmates-2006 |
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