Evidence map›Paper›PMID 36522329›Full record

ArticleNPJ science of learning2022

Schooling substantially improves intelligence, but neither lessens nor widens the impacts of socioeconomics and genetics.

Nicholas Judd, Bruno Sauce, Torkel Klingberg

Abstract read
In one paragraph

Article in NPJ science of learning, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed.

  1. Article
  2. Article
  3. Reply to Fitzgerald et al.: Mischaracterizing our findings; the cognitive profile of elite footballers remains robust.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Article
  5. Childhood IQ and adolescent health behavior.SSM - population health · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Nicholas JuddDepartment of Neuroscience, Karolinska Institute, Stockholm, Sweden. nickkjudd@gmail.com.ORCID http://orcid.org/0000-0002-0196-9871
Bruno SauceDepartment of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.ORCID http://orcid.org/0000-0002-9544-0150
Torkel KlingbergDepartment of Neuroscience, Karolinska Institute, Stockholm, Sweden.ORCID http://orcid.org/0000-0002-3175-2171

Funding

Vetenskapsrådet (Swedish Research Council) 2019-01768_3
6 · The paper itself

Abstract

Schooling, socioeconomic status (SES), and genetics all impact intelligence. However, it is unclear to what extent their contributions are unique and if they interact. Here we used a multi-trait polygenic score for cognition (cogPGS) with a quasi-experimental regression discontinuity design to isolate how months of schooling relate to intelligence in 6567 children (aged 9-11). We found large, independent effects of schooling (β ~ 0.15), cogPGS (β ~ 0.10), and SES (β ~ 0.20) on working memory, crystallized (cIQ), and fluid intelligence (fIQ). Notably, two years of schooling had a larger effect on intelligence than the lifetime consequences, since birth, of SES or cogPGS-based inequalities. However, schooling showed no interaction with cogPGS or SES for the three intelligence domains tested. While schooling had strong main effects on intelligence, it did not lessen, nor widen the impact of these preexisting SES or genetic factors.

Identifiers

PMID36522329
PMCPMC9755250

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.