David P. Barash, Ph. D. , is a zoologist and is currently professor of psychology at the University of Washington in Seattle. He is the author of more than a dozen books, including Making Sense of Sex, co-authored by Judith Lipton.
Judith Eve Lipton, M. D. , a psychiatrist specializing in women's issues, is the recipient of many honors, including a fellowship in the American Psychiatric Association.
Married since 1977, Barash and Lipton live in Redmond, Washington.