By way of the popular literature in recent years, my sister has always believed that most socialization and play is learned. So when she had two sons followed by a daughter, she thought that her daughter would learn to like what her brothers liked. Well, it turns out that she likes the classical girl things like dolls, and pretty dresses, and colorful bunny toys, and has no interest in the toys that her brothers played with, which were classical boy toys. My sister has really been shocked by this. Years of Oprah shows and Parent Magazine subscriptions, right down the tubes!