View Single Post
Old 07-08-2012, 02:52 PM
StarTeddy's Avatar
StarTeddy StarTeddy is offline
Join Date: May 2011
Posts: 55

I was actually reading an somewhat unrelated article and I found some interesting information regarding the topic. The article isn't about poly, it's about infidelity, but it's easy to draw comparisons.

The attachment system, fueled by the neurohormones oxytocin in females and vasopressin in males, drives animals, including humans, to pair-bond to rear their offspring as a team. Both hormones are triggered by orgasm, and both trigger dopamine release in reward regions of the brain. But all animals cheat, even when they form pair bonds. In most mammals, the bond lasts only as long as it takes to rear the young. Among prairie voles, science's favorite model of monogamy, knocking out the gene that codes for vasopressin receptors abolishes their penchant for pair-bonding. And implanting it in their notoriously promiscuous cousins, the mountain voles, leads the males to fixate on a specific female partner even when alluring others are abundantly available.

More recently, in a study of over 500 men, Swedish researchers found that variations in a gene that codes for vasopressin receptors in humans influences the very ability to form monogamous relationships. Men with two copies of a specific gene variant scored significantly lower on a questionnaire known as the Partner Bonding Scale and reported twice as many marital crises in the past year. Those with two copies of the variant were also twice as likely to be involved in outside relationships and far less likely to have ever been married than those not carrying the allele.
In a study reported in 2010 in PLoS One, Justin Garcia, a postdoctoral fellow at Binghamton University, outlined another payoff—pure, passionate thrill. He found that individuals with a variant of a dopamine receptor gene were more likely than those without it to have a history of "uncommitted sex, one-night stands, and adultery." The motivation, he says, "stems from a system of pleasure and reward." Fisher suspects that's just the tip of the infidelity iceberg, and more biological contributors are likely to be identified in future studies.
The entire article can be found here.

Last edited by StarTeddy; 07-08-2012 at 02:55 PM.
Reply With Quote