Swinging can offer married bisexuals an opportunity to engage in a sexual relationship with an individual of the same sex (Bergstrand & Williams, 2000). Bergstrand and Williams (2000) found that demographically, swingers are not that different from non-swingers - they are cut across the political spectrum, are a part of the middle to upper-middle class, have a higher degree of education, are white with white collar jobs, and around middle age. Other research indicates the swingers tend to be in their twenties and thirties (Cole & Spaniard, 1974; Fang, 1976; Varni, 1972) though this research is from the 1970s and the mean age of swingers today could simply be older than it once was.