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Birth month is a big factor in athletic performance • Daniel Kiikka (danielkiikka.com)

submitted 9 months ago by [email protected] to c/[email protected]

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[–] [email protected] 13 points 9 months ago (3 children)

Isn't this driven by grouping children by age? I.e. a kid born 6 months before the school year will have a developmental advantage over the other kids in the same group. If so, the title could be changed to: using age to group children creates unfair differences in competencies.

[–] [email protected] 4 points 9 months ago

Yup, and this is not new information. i've seen studies about this effect for at least a decade, probably more like 2 but time flies now

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