Non-consensual and Consensual Non-monogamy in Norway.

The paper sets out to study Norwegians' experiences of non-monogamy. Data were collected by questionnaires in a web sample of 4160 Norwegians (18-89 years). 26.3% of men and 17.8% of women reported that they ever had non-consensual non-monogamy. Consensual non-monogamy was reported by 3%. Compared to participants with no or non-consensual experience, consensual non-monogamy was highly related to relationship intimacy and positive sexual attitudes toward sex and sexuality. At the most recent extradyadic event, 21.5% of heterosexual men and 47.1% of gay/bisexual men reported condom use, which implies a risk for sexually transmitted diseases.