r = .21, the cor. btw a 4th grade child's IQ and their best friend's IQ, controlling for maternal IQ and SES (N=810) http://www.sciencedirect.com/science/article/pii/S0160289617300697 …
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r = .21, the cor. btw a 4th grade child's IQ and their best friend's IQ, controlling for maternal IQ and SES (N=810) http://www.sciencedirect.com/science/article/pii/S0160289617300697 …
