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  "path": "/2026/02/19/new-research-debunks-the-brain-at-25-factoid.html",
  "publishedAt": "2026-02-19T19:38:29.000Z",
  "site": "https://boingboing.net",
  "tags": [
    "Post",
    "brain development",
    "myths",
    "neuroscience",
    "psychology",
    "Science",
    "Read the rest",
    "The \"brain isn't done until 25\" factoid is based on a funding cutoff",
    "Boing Boing"
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  "textContent": "[](https://boingboing.net/2026/02/19/new-research-debunks-the-brain-at-25-factoid.html \"The \"brain isn't done until 25\" factoid is based on a funding cutoff\")\n\nYou've seen the claim on TikTok, in parenting forums, and in roughly a million Instagram infographics: \"Your brain isn't fully developed until you're 25.\" It's the go-to explanation for everything from bad relationships to impulsive tattoos. The number 25, though, has almost nothing to do with neuroscience. — Read the rest \n\nThe post The \"brain isn't done until 25\" factoid is based on a funding cutoff appeared first on Boing Boing.",
  "title": "The \"brain isn't done until 25\" factoid is based on a funding cutoff"
}