The sex-positive movement is a social movement and philosophical movement that promotes and embraces sexuality and sexual expression, with an emphasis on safe and consensual sex. Sex-positivity is "an attitude towards human sexuality that regards all consensual sexual activities as fundamentally healthy and pleasurable, encouraging sexual pleasure and experimentation". The sex-positive movement advocates these attitudes. The sex-positive movement also advocates sex education and safer sex as part of its campaign". Part of its original use was in an effort to get rid of the frightening connotation that the term 'positive' had during the height of the AIDS epidemic. The movement generally makes no moral distinctions among types of sexual activities, regarding these choices as matters of personal preference.
The terms and concept of sex-positive (German: sexuell positiv) (or, alternately sex-affirmative (sexuell bejahend)) and sex-negative (sexuell negativ) are generally attributed to Wilhelm Reich. His hypothesis was that some societies view sexual expression as essentially good and healthy, while other societies take an overall negative view of sexuality and seek to repress and control the sex drive. Other terms used to describe this concept include pro-sex, or pro-sexuality.
In opposition, sex-negativity takes on conservative definitions of human sexuality. Sex is seen as a destructive force except under the contract of a marriage. Sexual acts are ranked hierarchically, with marital heterosexuality at the top of the hierarchy and masturbation, homosexuality, and other sexualities that deviate from societal expectations closer to the bottom. Medicine and psychiatry are said to have also contributed to sex-negativity, as they may, designate some forms of sexuality that appear on the bottom of this hierarchy as being pathological (see Mental illness).
The sex-positive movement does not, in general, make moral or ethical distinctions between heterosexual or homosexual sex, or masturbation, regarding these choices as matters of personal preference. Some sex-positive positions include acceptance of BDSM and polyamory as well as asexuality, transsexuality, transgenderism, and other forms of gender transgression in general. Most elements of the sex-positive movement advocate comprehensive and accurate sex education as part of its campaign.