But to what extent are they different because we, as a society, train them to be different from birth? I have twin children, a boy and a girl. My daughter likes math, science, art and playing piano and she has a "tough" personality. My son likes literature and classic rock music and is scared of spiders and horror movies. He is more concerned with clothes and appearance than she is. He gives me hugs and kisses on the cheek in public and she prefers a smile and a high-five. They are 12 years old, and they don't correspond to what society expects of them in their personalities. They each have "traditionally" masculine and feminine traits. Is there something wrong with them?