The article gives some very good counter-examples to the overinterpretation of twin studies to claim "family environments don't matter". (Self-promotion: I and

The article gives some very good counter-examples to the overinterpretation of twin studies to claim "family environments don't matter". (Self-promotion: I and a friend wrote something similar here - https://wyclif.substack.com/p/no-wait-stop-it-matters-how-you-raise https://wyclif.substack.com/p/no-wait-stop-it-matters-how-yo....) Still, it is fair to say that some of the underlying differences captured by being in foster care may be genetic.