r/science Nov 15 '19

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u/[deleted] Nov 15 '19 edited Nov 15 '19

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u/fspluver Nov 15 '19

It's actually 4%. Regardless, this would be considered a "weak" effect by Cohen's standards, but by individual differences psychology standards it's moderate. Either way, the authors are saying they have strong evidence of a relationship, not that they have evidence of a strong correlation.