I tend to believe that Katie B. is in the ball park regarding the best answer to this question. I have no idea but can tell you that in my case at least, my mother expected a girl and wanted a girl. She had only selected girl names and she was so dissappointed when I was born a male. She had not chosen a male name nor given it any thought. The nurse told her she would not be allowed to take me home from the hospital until she had named me ( Jokingly, I'm sure).

In my earliest memories, my mother had dressed me in girl clothes on many occasions, but as I got older and began maturing she stopped and I grew up as a young man, joined the military and when I got out took on a tough manly job and fought the urges to dress for many years before I succumbed.

Today, retired, I feel that I am a male with a unique feminine side and I enjoy both sides, although, I favor the female side more and more as I get up in my years.