Children's vocabulary and reaction time improved significantly from 18 to 24 months, and maternal talk measures were highly intercorrelated¶
Claim · All claims
Evidence · 1 study · associationalr2·q2
Currency · newest study 2008 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2013: baselines and conditions change
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.
q2 i? Children's vocabulary increased from M = 50 words (SD = 50) at 18 months to M = 203 (SD = 142) at 24 months, t(26) = 6.5, p < .001, and mean RT decreased from 1034 ms to 892 ms, t(24) = 3.3, p < .003. → Hurtado Nereyda 2008
Evidence¶
Hurtado Nereyda 2008¶
Hurtado Nereyda, Marchman Virginia A., Fernald Anne. (2008). Does input influence uptake? Links between maternal talk, processing speed and vocabulary size in Spanish-learning children. Developmental Science. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2898277/
q2 · i? · associational · r2
Descriptive longitudinal change analysis in the 27-dyad sample using parent-reported vocabulary and eye-tracked RT. The article reports "Children's vocabulary showed significant gains from 18 (M = 50 words, SD = 50) to 24 months (M = 203, SD = 142), t(26) = 6.5, p < .001" and mean RT decreased significantly from 1034 ms (SD = 163) to 892 ms (SD = 153), t(24) = 3.3, p < .003.
"Children's vocabulary showed significant gains from 18 (M = 50 words, SD = 50) to 24 months (M = 203, SD = 142), t(26) = 6.5, p < .001."
Discussion¶
Related Claims¶
- Faster word recognition at 24 months is associated with larger vocabularies and greater vocabulary gains in Spanish-learning children — related
- Children of mothers who produced more word tokens at 18 months were faster to recognize familiar words at 24 months — related
- Substantial variability in maternal talk existed within this primarily low-SES sample, and maternal talk was uncorrelated with SES — related
- Maternal talk influences on vocabulary and processing speed are largely overlapping, with each mediating the other's relation to input — related
- Children get faster at recognising familiar words in speech between 19 and 31 months of age — related
- Maternal talk quantity at 18 months predicts Spanish-learning children's vocabulary size and vocabulary gains at 24 months, controlling for earlier vocabulary — related
- Individual differences in processing speed remain broadly stable between 19 and 31 months — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
vocabulary-and-processing-speed-gains-18-to-24-months |
title |
Children's vocabulary and reaction time improved significantly from 18 to 24 months, and maternal talk measures were highly intercorrelated |
description |
Children's vocabulary and reaction time improved significantly from 18 to 24 months, and maternal talk measures were highly intercorrelated |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2008 |
recheck_by |
2013 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — hurtado-nereyda-2008 |
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