Some believe that open relationships occur more frequently in certain demographics, such as the young rather than the old in America, including, more specifically, the college-educated middle-class, rather than the uneducated working-class, or people of certain ethnic and/or other racial minorities [REF].
A 1974 study showed that male students who either cohabit or live in a communal group are more likely to become involved in open relationships than females, and are still more interested in the concept than females even if not participating in open relationships [REF].