1. Psychological adjustment of homosexual and heterosexual men: A cross-national replication

   • Marvin Siegelman

   OriginalPaper Pages: 1 - 11

2. Circadian and circannual rhythms in sexual activity and plasma hormones (FSH, LH, Testosterone) of five human males

   • Alain Reinberg
   • Michel Lagoguey

   OriginalPaper Pages: 13 - 30

3. Early sexual experience as a factor in prostitution

   • Jennifer James
   • Jane Meyerding

   OriginalPaper Pages: 31 - 42

4. Sexual behavior of Colombian female university students

   • Heli Alzate

   OriginalPaper Pages: 43 - 54

5. Age and sexual behavior of Japanese macaques (Macaca Fuscata)

   • Linda Wolfe

   OriginalPaper Pages: 55 - 68

6. Book review

   • Julia R. Heiman

   BookReview Pages: 69 - 71

7. Letter to the editor

   • Gunter Schmidt

   Letter Pages: 73 - 75

8. Institute for Sex Research

   Announcement Pages: 77 - 77