Editing Open marriage (section)

===Types of openness: from  "polyamory style" to "swinging style"===
Extramarital relationships vary in terms of the degree of sexual involvement desired and the degree of emotional involvement desired.<ref name="Sprenkle, Weis, 1978">Sprenkle, D.H., & Weis, D.L. (1978). Extramarital Sexuality: Implications for Marital Therapists. ''Journal of Sex and Marital Therapy'', 4:279–291.</ref> Presented with the potentiality of non-monogamous intimacy, a given individual might be motivated more either by the desire for multiple sexual partners or a wider erotic experience than offered by monogamy, or by the desire for multiple others with whom to form an emotional or familial bond.

Polyamory is motivated by a desire to expand love by developing emotionally involved relationships with extramarital partners. Swinging is motivated by a desire for physical gratification by engaging in sexual activities with extramarital partners. The distinction between polyamory and swinging applies to open marriages. Delineation of polyamory and swinging has appeared in academic literature,<ref name="Jenks, 2001">Jenks, R. (2001). The Lifestyle: A Look at the Erotic Rites of Swingers, by Terry Gould. ''Journal of Sex Research'', 38, pp. 171–173.</ref><ref name="Sagarin, 2005">Sagarin, B.J. (2005). Reconsidering evolved sex differences in jealousy: Comment on Harris (2003). [[Personality and Social Psychology Review]], 9, pp. 62–75.</ref><ref name="Cook, 2005">Cook, E. (2005). Commitment in polyamorous relationships. A research project presented in partial fulfillment of the requirement for the degree Master of Arts in Liberal Studies Psychology, Regis, University. Retrieved July 16, 2006, from http://www.aphroweb.net/papers/thesis/index.htm.</ref><ref name="Keener, 2004">Keener, M.C. (2004)  Phenomenology of polyamorous persons. A thesis submitted to the faculty of The University of Utah in partial fulfillment of the requirements for the degree of Master of Science, Department of Educational Psychology, The University of Utah. Retrieved July 16, 2006, from http://www.xmission.com/~mkeener/thesis.pdf.</ref> popular media,<ref name="Epstein, 2004">Epstein, R.J. (2004). Whole lotta love:'Polyamorists' go beyond monogamy. The Milwaukee Journal Sentinel, Sep 13, 2004. Retrieved July 16, 2006, from http://www.findarticles.com/p/articles/mi_qn4196/is_20040913/ai_n15332654{{Dead link|date=December 2022 |bot=InternetArchiveBot |fix-attempted=yes }}.</ref><ref name="White, 2004">White, V. (2004). A Humanist looks at polyamory. Humanist, Nov–Dec, 2004.  Retrieved July 16, 2006 from http://www.findarticles.com/p/articles/mi_m1374/is_6_64/ai_n9532076 {{Webarchive|url=https://web.archive.org/web/20080915235910/http://findarticles.com/p/articles/mi_m1374/is_6_64/ai_n9532076 |date=15 September 2008 }}.</ref> and Web sites devoted respectively to polyamory<ref name="PolyamorySociety.Org">PolyamorySociety.Org. Retrieved July 16, 2006, from http://www.polyamorysociety.org/page16.html.</ref><ref name="Polyamory.Com">Polyamory.Com. Retrieved July 16, 2006, from http://www.polyamory.com.</ref> and to swinging.<ref name="SelectSwingers.Org, 2003">SelectSwingers.Org (2003). Why do couples swing? Retrieved July 19, 2006 from http://www.selectswingers.org/why_couples_swing_.html.</ref><ref name="CloudNine, 2006">CloudNine (2006). What is swinging? Retrieved July 19, 2006 from http://www.cloud9social.com/swinging.html {{Webarchive|url=https://web.archive.org/web/20110719183337/http://www.cloud9social.com/swinging.html |date=19 July 2011 }}.</ref> (The swing sites prefer to frame the distinction more along Gould's<ref name="Gould, 1999">Gould, T. (1999). The Lifestyle: A Look at the Erotic Rites of Swingers. Canada: Vintage Books.</ref> "utopic swingers" and "recreational swingers".)