I like his description of Serenity parenting, it matches how we are trying to raise our two sons. I still think I should make a t-shirt that says "My kid's gonna enjoy soccer wether he likes it or not."

But twin research has another far more amazing lesson: With a few exceptions, the effect of parenting on adult outcomes ranges from small to zero. Parents change kids in many ways; the catch is that the changes fade out as kids grow up.

Twin Lessons: Have More Kids. Pay Less Attention to Them. - Ideas Market - WSJ