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Published effect sizes shrink as more studies are done, and that decline is what the replication crisis is made of.

Drawn from what Stuart Ritchie said

Subjectspeer reviewmetascience
What these subjects mean

peer review How science checks itself, and the case that the checking mostly does not work.

metascience Research about research: whether published findings hold up, and what makes a field more or less reliable.

What Stuart Ritchie actually said

  1. Stuart Ritchie Psychologist, formerly a lecturer at King's College London
    The decline effect is the idea that scientific findings get smaller over time. That is, initial findings tend to report effect sizes that then crumble away—sometimes to nothing—with subsequent research.

    Where this was said

    ↗How growth mindset shranksciencefictions.org

    11 Oct 2022

    All 3 korrents from this piecethis one is 2nd

Added to korrents 7 Sept 2026 · How quotes work · Something wrong? Tell us

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