Vocabulary adds significantly to predicting knower-level after age, but age does not add after vocabulary, suggesting age does not mediate the vocabulary–number-knowledge link.¶
Claim · All claims
Evidence · 1 study (2 entries) · associationalr2·q3
Currency · newest study 2012 · checked against its sources 2026-10-19 (automated, 2 of 2 entries) · 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? In hierarchical regression, both vocabulary scores added significantly to fit when entered after age, while age did not contribute significantly when entered after vocabulary. → Negen 2012
q3 i? The correlation between age and knower-level controlling for vocabulary was not significant, r(29) = .184, p = .320. → Negen 2012 (2)
Evidence¶
Negen 2012¶
Negen, J., & Sarnecka, B. W. (2012). Number-Concept Acquisition and General Vocabulary Development. Child Development. https://doi.org/10.1111/j.1467-8624.2012.01815.x
q3 · i? · associational · r2
Hierarchical regression on the Experiment 2 data (Table 2): Model 1 entered age (R2 = .468), then receptive vocabulary (ΔR2 = .133**) and expressive vocabulary (ΔR2 = .074*); Model 2's final age step (ΔR2 = .020) was not significant.
"For Model 1, we entered age, then receptive and productive vocabulary, revealing that all steps added to the fit. For Model 2, we entered receptive and productive vocabulary, then age. In this case, age did not contribute significantly to the fit."
Negen 2012 (2)¶
Negen, J., & Sarnecka, B. W. (2012). Number-Concept Acquisition and General Vocabulary Development. Child Development. https://doi.org/10.1111/j.1467-8624.2012.01815.x
q3 · i? · associational · r2
Secondary analysis of the Experiment 2 data found the age–knower-level partial correlation "r(29) = .184, p = .320" was not significant, supporting the claim that language skill, not age, accounts for the shared variance.
"Finally, we calculated the correlation between age and knower-level when controlling for the vocabulary scores. This correlation was not significant r(29) = .184, p = .320."
Discussion¶
Learner Variables¶
- Reading and Language — predictor: learners who differ on it differ in outcomes
- Vocabulary — predictor: learners who differ on it differ in outcomes
Related Claims¶
- Number-word knowledge is strongly correlated with expressive vocabulary, independent of age, in children aged 30–60 months. — related
- Both receptive and expressive vocabulary correlate with number-word knowledge independent of age, replicating Experiment 1. — related
- Children's knower level of verbal number words is cross-sectionally associated with ANS acuity even after controlling for age and sex — related
- ANS acuity correlates with later number sets fluency but does not emerge as a unique predictor once symbolic knowledge is controlled — related
- The mediating role of executive functions remains significant when children's temperament and vocabulary are modeled as alternative mediators — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
vocabulary-predicts-knower-level-beyond-age-hierarchical-regression |
title |
Vocabulary adds significantly to predicting knower-level after age, but age does not add after vocabulary, suggesting age does not mediate the vocabulary–number-knowledge link. |
description |
Vocabulary adds significantly to predicting knower-level after age, but age does not add after vocabulary, suggesting age does not mediate the vocabulary–number-knowledge link. |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2012 |
source_checked |
2026-10-19 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
2 — negen-2012, negen-2012-2 |
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