An aspect of Sigmund Freud’s developmental theory. Freud believed that during development girls had to switch from having the mother as the love object to having the father as the love object: and also switch from the clitoris to the vagina as the main genital zone. At about the age of four, Freud believed that girls first discovered they lacked a penis. The girl will blame her mother or the lack of a penis and the consequent hurt to her own self-esteem. This causes the girl to give up clitoral sexuality, and turn to the father as love object. This aspect of Freud’s theory has received a great deal of criticism, particularly from feminist psychoanalysts.