However it should be noted that this study may be biased in terms of its sample (i.e.potentially those swinging couples who had stronger relationships would be motivated to complete the questionnaire, or alternatively the stress that swinging may place on a marriage means that only those with higher than average levels of commitment to their partners are able to remain married whilst swinging; additionally, couples that have jealousy or strife issues caused by swinging will not usually stay in the swinging lifestyle).
Regardless of club rules it is considered polite within the scene to always assume that condoms are to be used.
This signifies that rejection of a sexual proposal does not require justification and must always be respected.
Violation of the ground rules can occasion immediate expulsion.
There was no difference between the responses of men and women, although more males (70%) than females completed the survey.
(Bergstrand & Williams, Today's Alternative Marriage Styles: The Case of Swingers, Electronic Journal of Human Sexuality, Vol.3, 10 October 2000 ).