Relative to chronological age, one year of schooling had its largest ratio on working memory (ratio = 2.2), higher than cIQ (1.1) and fIQ (0.54)¶
Claim · All claims
Evidence · 1 study · causalr2·q3
Currency · newest study 2022 · 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? WM had the highest schooling-to-age ratio of 2.2, meaning one year of schooling had double the effect of one year of chronological age for this age range. → Nicholas Judd 2022
Evidence¶
Nicholas Judd 2022¶
Nicholas Judd, Bruno Sauce and Torkel Klingberg. (2022). Schooling substantially improves intelligence, but neither lessens nor widens the impacts of socioeconomics and genetics. npj Science of Learning. https://doi.org/10.1038/s41539-022-00148-5
q3 · i? · causal · r2
Descriptive contrast of schooling-versus-age coefficient ratios from the same regression discontinuity models: cIQ ratio = 1.1, fIQ ratio = 0.54, WM ratio = 2.2. The article reports this pattern rather than a test of the ratio difference.
"Interestingly, WM, a subtask of fIQ, had the highest ratio of 2.2, indicating for this age range, 1 year of schooling had double the effect of 1 year of chronological age."
Discussion¶
Related Claims¶
- One year of schooling significantly improves children's crystallized intelligence, fluid intelligence, and working memory (schooling β = 0.13, 0.10, 0.09 respectively) — related
- Schooling showed no significant interaction with cogPGS or SES on any intelligence domain, and Bayesian ROPE analysis found interaction effects under 0.05 SD with 95% probability — related
- Schooling's effect on general intelligence (g) was 0.136 SD, mirroring the domain findings, with no significant interactions — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
schooling-age-ratio-highest-working-memory |
title |
Relative to chronological age, one year of schooling had its largest ratio on working memory (ratio = 2.2), higher than cIQ (1.1) and fIQ (0.54) |
description |
Relative to chronological age, one year of schooling had its largest ratio on working memory (ratio = 2.2), higher than cIQ (1.1) and fIQ (0.54) |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2022 |
generated |
by process:wiki-ingest on 2026-10-26 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — nicholas-judd-2022 |
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