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Educational expansion and the hidden reversal of the Flynn effect-Differential trends across socioeconomic strata.

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Title: Educational expansion and the hidden reversal of the Flynn effect-Differential trends across socioeconomic strata.
Authors: Bratsberg B; Ragnar Frisch Centre for Economic Research, Oslo 0349, Norway.; Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo N-0213, Norway., Fjell AM; Center for Lifespan Changes in Brain and Cognition, Department of Psychology, University of Oslo 0349, Oslo, Norway.; Computational Radiology and Artificial Intelligence, Department of radiology and nuclear medicine, Oslo University Hospital, Oslo 0424, Norway., Rogeberg OJ; Ragnar Frisch Centre for Economic Research, Oslo 0349, Norway., Walhovd KB; Center for Lifespan Changes in Brain and Cognition, Department of Psychology, University of Oslo 0349, Oslo, Norway.; Computational Radiology and Artificial Intelligence, Department of radiology and nuclear medicine, Oslo University Hospital, Oslo 0424, Norway.
Source: Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2026 Jul 14; Vol. 123 (28), pp. e2536089123. Date of Electronic Publication: 2026 Jul 06.
Publication Type: Journal Article
Journal Info: Publisher: National Academy of Sciences Country of Publication: United States NLM ID: 7505876 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1091-6490 (Electronic) Linking ISSN: 00278424 NLM ISO Abbreviation: Proc Natl Acad Sci U S A Subsets: MEDLINE
Database: MEDLINE Ultimate
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  Data: <searchLink fieldCode="AU" term="%22Bratsberg+B%22">Bratsberg B</searchLink>; Ragnar Frisch Centre for Economic Research, Oslo 0349, Norway.; Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo N-0213, Norway.<br /><searchLink fieldCode="AU" term="%22Fjell+AM%22">Fjell AM</searchLink>; Center for Lifespan Changes in Brain and Cognition, Department of Psychology, University of Oslo 0349, Oslo, Norway.; Computational Radiology and Artificial Intelligence, Department of radiology and nuclear medicine, Oslo University Hospital, Oslo 0424, Norway.<br /><searchLink fieldCode="AU" term="%22Rogeberg+OJ%22">Rogeberg OJ</searchLink>; Ragnar Frisch Centre for Economic Research, Oslo 0349, Norway.<br /><searchLink fieldCode="AU" term="%22Walhovd+KB%22">Walhovd KB</searchLink>; Center for Lifespan Changes in Brain and Cognition, Department of Psychology, University of Oslo 0349, Oslo, Norway.; Computational Radiology and Artificial Intelligence, Department of radiology and nuclear medicine, Oslo University Hospital, Oslo 0424, Norway.
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        Value: 10.1073/pnas.2536089123
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              Text: 2026 Jul 14
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