John Bancroft, M.D., Editor
Clive M. Davis, Ph.D., Associate Editor
Deborah Weinstein, MSW, Associate Editor

Contents
The Explicit and Implicit Use of the Scripting Perspective in Sex Research ... 1
John H. Gagnon

Surveys of Heterosexual Behaviour ... 45
Ulrich Clement, translated by Ulrike Dous

History and the Understanding of Human Sexuality ... 75
Vern L. Bullough

Personality Dispositions as Mediators of Sexual Responses ... 93
Donn Byrne and Lisa Schulte

Cognitive and Affective Contributions to Sexual Functioning ... 119
Margaret A. Cranston-Cuebas and David H. Barlow

Transsexual Surgery Follow-Up: Status in the 1990s ... 163
Richard Green and Davis T. Fleming

Biological Determinants of Sexual Orientation ... 175
Louis Gooren, Eric Fliers, and Keith Courtney

The Neuroendocrine Regulation of Sexual Behaviour in Female Primates ... 197
Alan F. Dixson

Sexuality and Aging in Men ... 227
Raul C. Schiavi

Physiology and Pathology of Penile Erection ... 251
Ashok K. Batra and Tom F. Lue

Recent Developments in the Clinical Assessment and Diagnosis of Erectile Dysfunction ... 265
Jacques Buvat, Michelle Buvat-Herbaut, Antoine Lemaire, Gerard Marcolin, and Epienne Quittelier