Faster processing speed predicts greater vocabulary growth only for children with smaller vocabularies at 19 months¶
Claim · All claims
Evidence · 1 study · associationalr2·q3
Currency · newest study 2019 · 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 interaction between Mean RT and Vocabulary Level significantly improved model fit for the linear term, indicating the effect of processing speed on linear vocabulary growth differed for children with high versus low vocabularies. → Michelle S. Peter 2019
Evidence¶
Michelle S. Peter 2019¶
Michelle S. Peter, Samantha Durrant, Andrew Jessop, Amy Bidgood, Julian M. Pine, Caroline F. Rowland. (2019). Does speed of processing or vocabulary size predict later language growth in toddlers? Cognitive Psychology 115 (2019) 101238. https://doi.org/10.1016/j.cogpsych.2019.101238
q3 · i? · associational · r2
Growth curve model of change in expressive vocabulary between 19 and 25 months, with children divided by median split into high and low vocabulary groups at 19 months. Visual inspection of Fig. 4 suggested "processing speed has a positive effect on vocabulary growth for children with lower vocabularies".
"An interaction between Mean RT and Vocabulary Level, however, did significantly improve the model fit for the linear term (β=0.30 [0.03, 0.57], SE=0.14, χ2(1)=1.53, p=0.038), indicating that the effect of processing speed on linear vocabulary growth was different for children with high versus low vocabularies."
Discussion¶
Related Claims¶
- Faster word recognition at 24 months is associated with larger vocabularies and greater vocabulary gains in Spanish-learning children — related
- Individual differences in processing speed remain broadly stable between 19 and 31 months — related
- Processing speed at 19 months does not significantly influence linear vocabulary growth between 19 and 30 months — related
- Processing speed at 19 months correlates with expressive vocabulary between 18 and 31 months, but processing speed at 25 and 31 months does not — related
- Faster processing speed at 19 months predicts faster syntactic growth between 19 and 30 months, controlling for concurrent vocabulary — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
processing-speed-predicts-vocabulary-growth-low-vocabulary-only |
title |
Faster processing speed predicts greater vocabulary growth only for children with smaller vocabularies at 19 months |
description |
Faster processing speed predicts greater vocabulary growth only for children with smaller vocabularies at 19 months |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2019 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — michelle-s-peter-2019 |
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