I. Q.

According to the Glenwood state school study, I.Q. can be increased or decreased by up to 30 points depending on the environment.

And, according to the Washington University School of Medicine, when children grow up away from their biological parents, their IQs are more closely correlated to biological parents, with whom they share genes, than adoptive parents, with whom they share an environment.

“A son’s intelligence is solely dependant on his mother and that is mirrored in both of her parents.” … Human Genetics Society, Australia 1995.
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