ArticleRoyal Society open science2022
Of differing methods, disputed estimates and discordant interpretations: the meta-analytical multiverse of brain volume and IQ associations.
Article in Royal Society open science, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Pooled it
- Domain-general and language-specific brain networks are differentially associated with verbal intelligence during development.iScience · 2026Article
- Brain correlates of cognitive reserve in offspring of patients with schizophrenia or bipolar disorder.European child & adolescent psychiatry · 2026Article
- To pull or push? Performance of four passerine species in the lever-pulling task.Animal cognition · 2026Article
- Psychosocial interventions indicate prolonged survival in cancer patients in a systematic review, meta-analysis, and multiverse meta-analysis of randomized controlled trials.Communications psychology · 2026Article
- The negative intelligence-religiosity link may be differentiated according to cognitive testFrontiers in psychology · 2026Article
- A genetic common factor underlying self-reported math ability and highest math class taken.Molecular psychiatry · 2025Article
- Cerebral cortical structures linked to intelligence.bioRxiv : the preprint server for biology · 2025Article
- Clinical examination for identifying low-risk pregnancies suitable for expectant management beyond 40-41 gestational weeks: maternal and fetal outcomes.Archives of gynecology and obstetrics · 2025Article
- The cost of language: functionally over-dominant language circuits in the human brain may limit cognitive abilities and non-verbal executive functions.Frontiers in human neuroscience · 2025Article
- The Physiology of Cognition in Autism Spectrum Disorder: Current and Future Challenges.Cureus · 2023Review
- Cortical thickness, gray matter volume, and cognitive performance: a crosssectional study of the moderating effects of age on their interrelationships.Cerebral cortex (New York, N.Y. : 1991) · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Brain size and IQ are positively correlated. However, multiple meta-analyses have led to considerable differences in summary effect estimations, thus failing to provide a plausible effect estimate. Here we aim at resolving this issue by providing the largest meta-analysis and systematic review so far of the brain volume and IQ association (86 studies; 454 effect sizes from
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.