List of Books by Serena Anderlini-D'Onofrio. See all books authored by Serena Anderlini-D'Onofrio
About Serena Anderlini-D'Onofrio
Fred "Fritz" Klein (December 27, 1932 – May 24, 2006) was an American psychiatrist and sex researcher who studied bisexuals and their relationships. He helped begin a foundation that promoted bisexual culture. He was an author and editor, as well as the developer of the Klein Sexual Orientation Grid a scale that measures an individual's sexual orientation. Klein believed that sexual orientation changed over the course of a lifetime and that researches underestimated the number of men that had sexual interactions with both sexes