I read this years ago in NurtureShock. Studies of adopted kids showed they still shared more personality traits with biological parents than adoptive ones. In f

I read this years ago in NurtureShock. Studies of adopted kids showed they still shared more personality traits with biological parents than adoptive ones. In fact they measured the two biggest factors as genetics and peer relationships with parenting being marginal. If you casually observe good parents with good kids or vice versa that's mostly genetic. Of course there's also a big distinction between personality and behavior. Parenting can certainly influence behavior regardless of personality.