1.   Gagnon studies sexuality.

2.   With five colleagues at the conference, Dr. Calderone set up an informal committee to study human sexuality.

3.   Masters studied human sexuality at Washington University in St. Louis, where he co-founded the Masters and Johnson Institute.

4.   Suicides for any reason are rare among the priesthood, said A.W. Richard Sipe, a psychologist and former priest who studies sexuality in the church.