The primary emphasis in this book "… is upon the import of the sociocultural environment and unique individual experiences as conditioners of sexually pervertive behavior." Following a discussion of "The perversion and the norm," the author treats homosexuality, transvestism, pyromania, sadomasochism, lust murder, fetishism, pedophilia, necrophilia, exhibitionism and voyeurism. Many case histories are presented, as well as many references to world sexual literature. A critical review of the Kinsey report and a bibliography of books dealing with sex variants supplement the text.