[The sexual psychology of human males]

Human sexuality has both its sociological nature and biological nature. Advances in molecular biology has unveiled almost all the biological mysteries of human sexuality. However, many problems in the psychological and sociological aspects have not yet been thoroughly studied. As a matter of fact, these psychological and sociological factors have much influence on sexuality than those biological ones. This paper briefly introduces some factors affecting male sexual psychology, including masturbation and other common sexual psychological dysfunctions.