Response times in number comparison show group, notation, and ratio main effects, with a larger ratio effect for dot arrays than Arabic numerals¶
Claim · All claims
Evidence · 1 study · causalr1·q3
Currency · newest study 2009 · 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? Adults responded faster than children, Arabic numerals faster than dot arrays, and 0.5 ratio trials faster than 0.8 ratio trials. → Cantlon Jessica F. 2009
Evidence¶
Cantlon Jessica F. 2009¶
Cantlon Jessica F., Libertus Melissa E., Pinel Philippe, Dehaene Stanislas, Brannon Elizabeth M., Pelphrey Kevin A. (2009). The Neural Development of an Abstract Concept of Number. Journal of Cognitive Neuroscience. https://doi.org/10.1162/jocn.2008.21159
q3 · i? · causal · r1
Response-time ANOVA from the behavioral results of the same fMRI experiment. The article reports "Adults performed significantly faster than children (1041 vs. 723 msec)" and a dot arrays ratio effect of 112 msec versus 13 msec for Arabic numerals.
"An ANOVA with factors of Group (children, adults) × Notation (Arabic, dots) × Ratio (0.5, 0.8) with a repeated measure of response time revealed main effects of group [F(1, 52) = 74.8, p < .001], notation [F(1, 52) = 9.01, p < .001], and ratio [F(1, 52) = 38.14, p < .001]."
Discussion¶
Related Claims¶
- Preschoolers' ANS task performance follows Weber's Law: accuracy decreases as numerical ratio approaches equality, and improves with age over six months — related
- Children and adults engage a common network of occipito-temporal, precentral, and superior parietal cortices during numerical judgments of both Arabic numerals and dot arrays — related
- Neither numerical training significantly improves Arabic number comparison performance — related
- In a number comparison task, adults outperform 6- to 7-year-old children in accuracy, Arabic numerals are easier than dot arrays, and easy 0.5 ratios are easier than difficult 0.8 ratios — related
- The numerical ratio effect in BOLD activity appears in superior parietal cortex in adults but in inferior frontal gyrus, precentral gyrus, and thalamus in children, with no group-level parietal ratio effect in children — related
- Numerosity comparison accuracy is ratio-dependent across grades three to five — related
- Accuracy on approximate addition decreases as ratio approaches 1, with a stronger ratio effect on the non-symbolic task — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
number-comparison-response-time-anova-effects |
title |
Response times in number comparison show group, notation, and ratio main effects, with a larger ratio effect for dot arrays than Arabic numerals |
description |
Response times in number comparison show group, notation, and ratio main effects, with a larger ratio effect for dot arrays than Arabic numerals |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2009 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — cantlon-jessica-f-2009 |
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