William Van Ornum is professor of psychology at Marist College in Poughkeepsie, New York. He has written A Thousand Frightening Fantasies: Understanding and Treating Scrupulosity and Obsessive Compulsive Disorder (1997), which includes an introduction by John Cardinal O'Connor of New York. He is the author, coauthor, or general editor for over thirty books, many of them on the relationship between psychology and spirituality.