'No Two Alike: Human Nature and Human Individuality,' by Judith Rich Harris - The New York Times Book Review - New York Times

'No Two Alike: Human Nature and Human Individuality,' by Judith Rich Harris - The New York Times Book Review - New York Times: "Does home environment — parenting style, marital harmony, the use or rejection of day care — shape a child's personality, making her more agreeable, less aggressive or more extroverted? Nope. Research shows that twins don't turn out more alike if they're raised together than if they're raised apart. Nor do adoptive siblings. And when you compare apples to apples — making sure that each parent-child unit in a study is as genetically related as any other — being raised in one home rather than another, on average, makes no difference."