Explore the evidence
2 of 88 decisions · clear everything
Survives the gold standardIndependent, durable, rigorousThe debunked shelfCheap winsFor parents at homeFamous numbers, deflatedWhere we admit ignoranceThe terrain
Your situation · from the applicability layer — absence means “not yet assessed,” never “doesn’t apply”
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group / setting
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outcome class
Physical capacity is about as heritable as cognitive ability (~60%, no shared environment). Whether trainability is a stable trait remains unproven — the skeptics are winning.
strong supportconf: highgc: low13/1436/48connected:How should a school run its classrDoes working-memory or brain trainCan executive function be trained,Does teaching a growth mindset rai+4
Talent and trainability — what is heritable, and what that does not license · talent · ages 4–18 · input
Later bells buy adolescents 40+ measured minutes of sleep — the best-identified positive effect in the archive; the achievement payoff is real but far smaller.
strong supportconf: mediumgc: low16/1836/48
Do later school start times increase adolescent sleep, and does that raise achievement? · health · ages 11–18 · input
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