Contributors: Susan Coates, Claudio Laks Eizirik, Peter Fonagy, Richard C. Friedman, Andre E. Haynal, Rainer Krause, Marianne Leuzinger-Bohleber, Linda C. Mayes, Friedemann Pfafin, Anne-Marie Sandler, Sheila Spensley, Sverre Varvin, and Rudi Vermote.

-Sex has undoubtedly become more complex since Freud's original descriptions, yet in another way it has changed little. It is still there as the primary motor ensuring the survival of our species, the perpetuation of our genetic material. For all mammals the process of reproduction is at the centre of their behavioural systems. For...