When presented with a Ken doll, four-year-old Bradley knows he's a boy because he:
Doesn't have long hair.
Six-year-old Alec correctly identifies the Ken doll as still a boy when he is wearing the skirt. Alec has acquired a sense of
Gender identity.
Once the interviewer puts a skirt on the Ken doll, 4-year-old Bradley identifies the Ken doll as
A girl.