Ad-Express and Daily Iowegian, Centerville, IA

CNHI/Southeast Iowa

November 29, 2012

What's going on in the brain of a cheater?

(Continued)

In the study, the scientists squirted oxytocin (or an inert spray) up the noses of male test subjects, some of whom were involved in a monogamous relationship with a woman and some of whom were not. Then they introduced the men to an attractive woman.

Rather than approach the attractive woman, as one might anticipate given oxytocin's reputation, the men in monogamous relationships who received oxytocin tended to keep her at a distance compared to men who received placebo squirts. Oxytocin had no effect on single guys.

In other words, giving a shot of oxytocin up the nose of bonded men tended to reinforce monogamy. This finding supports work by a Dutch scientist named Carsten de Dreu who has shown that oxytocin tends to increase trust toward members of a group, but not toward outsiders. In this case, the pretty woman is the outsider.

This is an interesting finding, but not so much because it tells us that oxytocin will forever prevent a man from stepping out. Rather, it shows us that chemicals in our heads can influence our social behavior just as they influence the behavior of animals, to the point that we do not have complete rational control over our actions.

A large body of evidence gathered over the past 15 years or so shows how chemical communication between neurons can bias our behavior. Oxytocin is only one of the chemicals involved. Stress hormones, dopamine, vasopressin, opioids (the brain's heroin) all have their say. And the science tells us that "monogamous" individuals — whether birds, rodents, or people — can be driven to have sex with those outside their socially exclusive pair bond.

One of us, Larry Young, conducts studies of bonding in a monogamous rodent called a prairie vole. His work has often been cited by social conservatives who have used the prairie vole as a kind of furry paragon of morality because the critters are stubbornly loyal to their mates. Socially, that is. Sexually, it's another story. Many bonded males are happy to have sex with another female if they happen to run across one that's in heat and willing. But they come home to their partner at end of the day.

Text Only
CNHI/Southeast Iowa
  • Sunburn isn't the only sign of summer that can leave you itchy and blistered

    You've got a rash. You quickly rule out the usual suspects: You haven't been gardening or hiking or even picnicking, so it's probably not a plant irritant such as poison ivy or wild parsnip; likewise, it's probably not chiggers or ticks carrying Lyme disease; and you haven't been swimming in a pond, which can harbor the parasite that causes swimmer's itch.

    July 30, 2014

  • Survey results in legislation to battle sexual assault on campus

    Missouri U.S. Sen. Claire McCaskill joined a bipartisan group of senators Wednesday to announce legislation that aims to reduce the number of sexual assaults on college campuses.

    July 30, 2014

  • An alarming threat to airlines that no one's talking about

    It's been an abysmal year for the flying public. Planes have crashed in bad weather, disappeared over the Indian Ocean and tragically crossed paths with anti-aircraft missiles over Ukraine.

    July 30, 2014

  • Sharknado.jpg Sharknado 2 set to attack viewers tonight

    In the face of another "Sharknado" TV movie (the even-more-inane "Sharknado 2: The Second One," premiering Wednesday night on Syfy), there isn't much for a critic to say except to echo what the characters themselves so frequently scream when confronted by a great white shark spinning toward them in a funnel cloud:
    "LOOK OUT!!"

    July 30, 2014 1 Photo

  • 20140729-AMX-GIVHAN292.jpg Spanx stretches into new territory with jeans, but promised magic is elusive

    The Spanx empire of stomach-flattening, thigh-slimming, jiggle-reducing foundation garments has expanded to include what the brand promises is the mother of all body-shaping miracles: Spanx jeans.

    July 29, 2014 1 Photo

  • Medical marijuana opponents' most powerful argument is at odds with a mountain of research

    Opponents of marijuana legalization are rapidly losing the battle for hearts and minds. Simply put, the public understands that however you measure the consequences of marijuana use, the drug is significantly less harmful to users and society than tobacco or alcohol.

    July 29, 2014

  • linda-ronstadt.jpg Obama had crush on First Lady of Rock

    Linda Ronstadt remained composed as she walked up to claim her National Medal of Arts at a White House ceremony Monday afternoon.

    July 29, 2014 1 Photo

  • Can black women have it all?

    In a powerful new essay for the National Journal, my friend Michel Martin makes a compelling case for why we need to continue the having-it-all conversation.

    July 29, 2014

  • 0729 OTT Picture veteran -T -M Veteran finally receives his medals OTTUMWA — A World War II injury may have saved the life of a U.S. Coast Guardsman from Iowa, but he lost friends and a box of military awards. Francis Hardy Harbour was born on Dec.16, 1919, in Drakesville. He joined the Coast Guard in 1941 as a mach

    July 29, 2014 1 Photo

  • Dangerous Darkies Logo.png Redskins not the only nickname to cause a stir

    Daniel Snyder has come under fire for refusing to change the mascot of his NFL team, the Washington Redskins. The Redskins, however, are far from being the only controversial mascot in sports history.  Here is a sampling of athletic teams from all areas of the sports world that were outside the norm.

    July 28, 2014 3 Photos

  • 'Rebel' mascot rising from the dead

    Students and alumni from a Richmond, Va.-area high school are seeking to revive the school's historic mascot, a Confederate soldier known as the "Rebel Man," spurring debate about the appropriateness of public school connections to the Civil War and its icons.

    July 28, 2014

  • Fast food comes to standstill in China

    The shortage of meat is the result of China's latest food scandal, in which a Shanghai supplier allegedly tackled the problem of expired meat by putting it in new packaging and shipping it to fast-food restaurants around the country

    July 28, 2014

  • wd saturday tobias .jpg Stranger’s generosity stuns Ohio veteran

    Vietnam War veteran David A. Tobias was overwhelmed recently when a fellow customer at an OfficeMax store near Ashtabula, Ohio paid for a computer he was purchasing.

    July 28, 2014 1 Photo

  • Screen Shot 2014-07-28 at 1.33.11 PM.png VIDEO: High-dive accident caught on tape

    A woman at a water park in Idaho leaped off a 22-foot high dive platform, then tried to pull herself back up with frightening results. Fortunately, she escaped with only a cut to her finger.

    July 28, 2014 1 Photo

  • CATS-DOGS281.jpg Where cats are more popular than dogs in the U.S.-and all over the world

    We all know there are only two types of people in the world: cat people and dog people. But data from market research firm Euromonitor suggest that these differences extend beyond individual preferences and to the realm of geopolitics: it turns out there are cat countries and dog countries, too.

    July 28, 2014 1 Photo

Obituaries
Featured Ads
Poll

The Iowegian wants readers to think about the solicitation ordinance that will prevent groups or individuals from entering a roadway to solicit money. The Centerville City Council in June by a 5-0 vote passed the first reading of just such an ordinance. Public pressure and during a subsequent special meeting, the council voted 3-2 to table the ordinance. A second special meeting to discuss the solicitation ordinance is scheduled for 5:30 p.m. Thursday, Aug. 7 at City Hall. So, the question of the week is, "Do you or do you not support the ordinance to prevent solicitation of funds in city streets?"

A. I support the ordinance
B. I do not support the ordinance
C. Not sure
     View Results
Iowegian on Facebook