According to the text, of U. S. women over the age of 85, about ____ are widows

Prenatal sexual differentiation of the brain may explain why

A) females have a larger brain and are more verbal. B) males have a larger brain and are dominant in sexual relationships. C) females have a better ability to identify and communicate feelings than do men. D) males have better visual-spatial skills than do women.

According to research by Simon LeVay, what differs between homosexual and heterosexual men?

a. Anatomy of part of the hypothalamus b. Ratio of testosterone to estradiol in the blood c. Opportunities for certain types of play in childhood d. Extraverted versus introverted personality