Re: Men
[FONT=arial]this might be why men seek extra-marital relationships. Studies shows that men in "new relationships" (i.e., less than 12 months) have significantly higher levels of testosterone than men in long-term relationships:
[SIZE=2]"Results showed that levels of testosterone of single men and men in new relationships did not differ, but both had significantly greater levels of testosterone than men in long-term relationships. Differences in levels of testosterone were unrelated to sociosexual orientation and extra-pair sexual interest. These findings support the evolutionary explanation of levels of testosterone in men varying in accordance with their internal motivation to seek new potential mates."
[/SIZE][URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116"][SIZE=2]http://journals.sagepub.com/doi/f[/SIZE]ull/10.1177/147470491501300116[/URL]
[SIZE=2]"An intriguing area of recent research has highlighted the association between relationship status and/or mating strategies in men and their fluctuating levels of circulatory testosterone. Examples of this include the findings from multiple studies that pair-bonded men (who are either married or in long-term, committed relationships) have lower levels of testosterone than single men ([URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Booth and Dabbs, 1993[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Burnham et al., 2003[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Gray, Chapman, et al., 2004[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Gray, Kahlenberg, Barrett, Lipson, and Ellison, 2002[/URL][COLOR=#333333]; [/COLOR][URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Mazur and Michalek, 1998[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]van Anders and Watson, 2006[/URL]).
Further findings suggest that fathers have lower levels of testosterone than non-fathers independently of relationship status, and that pair-bonded fathers demonstrate lower levels than pair-bonded non-fathers (e.g., [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Alvergne, Faurie, and Raymond, 2009[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Gettler, McDade, Feranil, and Kuzawa, 2011[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Jasienska, Jasienski, and Ellison, 2012[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Kuzawa, Gettler, Muller, McDade, and Feranil, 2009[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Muller, Marlowe, Bugumba, and Ellison, 2009[/URL]; [URL="http://journals.sagepub.com/doi/full/10.1177/147470491501300116#"]Perini, Ditzen, Fischbacher, and Ehlert, 2012[/URL])."
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[/SIZE][/FONT][FONT=arial][SIZE=2]" Again, this is commensurate with the suggested evolutionary explanation; these men, although pair-bonded, [B]will still be psychologically motivated to seek new sexual encounters and/or additional sexual partners[/B]. In other words, they do not show the same hormonal response to external cues (such as marriage or fatherhood) as have men who are “honestly” committed to reduced mating effort."[/SIZE]
[URL]https://www.psychologytoday.com/us/blog/women-who-stray/201108/putting-the-t-in-infidelity[/URL]
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