Anne Fausto-Sterling, Ph.D., (born 1944) is Professor of Biology and Women's Studies at Brown University. She participates actively in the field of sexology and has written extensively on the fields of sexual identity, gender identity, and gender roles.
She has written two books intended for the general audience. The second edition of the first of those books, Myths of Gender (ISBN 0-465-04792-0), was published in 1992.
Her second book for the general public is Sexing the Body (ISBN 0465077145), published in 2000. She stated that in it she sets out to "convince readers of the need for theories that allow for a good deal of human variation and that integrate the analytical powers of the biological and the social into the systematic analysis of human development."
She once claimed, in a paper entitled "The Five Sexes," that there were five sexes: male, female, merm , ferm , and herm. Advocates for intersexual people stated that this theory was wrong, confusing and unhelpful to the interests of intersexual people. In response she has since stated that she no longer advocates the use of these terms.