Parent rare word use at 30 months predicts child PPVT at 42 months with quantity, SES, and prior vocabulary controlled¶
Claim · All claims
Evidence · 1 study · associationalr2·q2
Currency · newest study 2012 · not yet checked against its sources · not reviewed by a person
Subclaims¶
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q2 i? Parent rare word types at 30 months significantly predict PPVT scores at 42 months after controlling for parent education, prior PPVT, and word tokens. → Rowe Meredith L 2012
Evidence¶
Rowe Meredith L 2012¶
Rowe Meredith L. (2012). A longitudinal investigation of the role of quantity and quality of child-directed speech in vocabulary development. Child development. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3440540/
q2 · i? · associational · r2
Multiple regression analysis (Model 6) predicting PPVT at 42 months. "when the number of rare word types was included as a predictor instead of total word types, it was a significant positive predictor (p < 0.01)" yielding R-squared of 58 percent.
"Similarly, in Model 6 when the number of rare word types was included as a predictor instead of total word types, it was a significant positive predictor (p < 0.01) and the resulting model showed an R-squared of 58 percent, about 6-percent higher than nested-model 4."
Discussion¶
Related Claims¶
- Parent explanations at 42 months are marginally related to child PPVT at 54 months with controls — related
- Parent education relates to input quantity and quality but not to narrative utterances — related
- Parent vocabulary diversity at 30 months predicts child PPVT at 42 months with quantity, SES, and prior vocabulary controlled — possibly the same claim (merge candidate)
- Proportions of rare words and decontextualized utterances in parent input increase linearly from 18 to 42 months — related
- Parental language input differs in quantity and quality across SES groups and relates to children's vocabulary, grammar, and processing development — related
- Parent number talk is not related to children's general vocabulary development once SES and overall talk are controlled, indicating domain specificity — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
rare-word-use-30-months-predicts-vocabulary-42-months |
title |
Parent rare word use at 30 months predicts child PPVT at 42 months with quantity, SES, and prior vocabulary controlled |
description |
Parent rare word use at 30 months predicts child PPVT at 42 months with quantity, SES, and prior vocabulary controlled |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2012 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — rowe-meredith-l-2012 |
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