The end of barroom brawlsJuly 18, 2007Study shows alcohol can reduce aggression The link between alcohol and aggression is well known. What's not so clear is just why drunks get belligerent. What is it about the brain-on-alcohol that makes fighting seem like a good idea" And do all intoxicated people get more aggressive" Or does it depend on the circumstances" University of Kentucky psychologist Peter Giancola and his student Michelle Corman decided to explore these questions in the laboratory. One theory about alcohol and aggression is that drinking impairs the part of the brain involved in allocating our limited mental resources-specifically attention and working memory. When we can only focus on a fraction of what's going on around us, the theory holds, drunks narrow their social vision, concentrating myopically on provocative cues and ignoring things that might have a calming or inhibiting effect. The scientists tested this idea on a group of young Kentucky men. Some of the men drank three to four screwdrivers before the experiment, while others stayed sober. Then they had them all compete against another person in a somewhat stressful game that required very quick responses. Every time they lost a round, they received a shock varying in intensity. Likewise, when they won a round they gave their opponent a shock. The idea was to see how alcohol affected the men's belligerence, as measured by the kinds of shocks they chose to hand out. But there was more to it. Giancola and Corman also deliberately manipulated some of the volunteers' cognitive powers. They required them-some drinkers, some not-to simultaneously perform a difficult memory task. The idea was to see if they could distract those who were "under the influence" from their "hostile" situation. If they could tax their limited powers of concentration, perhaps they wouldn't process the fact that someone was zapping them with electricity. And that's exactly what happened. As reported in the July issue of Psychological Science, the drunks who had nothing to distract them were predictably mean, exhibiting aggression towards their adversaries. However, the drunks whose attention was focused elsewhere were actually less aggressive than the sober non-drinkers. This seems counterintuitive at first, but it's really not: The sober men were cognitively intact, so they would naturally attend to both provocations and distractions in the room, resulting in some low level of aggression. It appears that alcohol has the potential to both increase and decrease aggression, depending on where's one's attention is focused. The psychologists speculate that working memory is crucial not only to barroom behavior, but to all social behavior, because it provides the capacity for self-reflection and strategic planning. Activating working memory with salient, non-hostile, and health-promoting thoughts, in effect reduces the "cognitive space" available for inclinations towards violence. Association for Psychological Science |
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| Related Aggression Current Events and Aggression News Articles Daycare may double TV time for young children, study finds In a new study, the amount of television viewed by many young children in child care settings doubles the previous estimates of early childhood screen time, with those in home-based settings watching significantly more on average than those in center-based daycares. The narrow line between love and jealousy A new study carried out at the University of Haifa has found that the hormone oxytocin, the "love hormone", which affects behaviors such as trust, empathy and generosity, also affects opposite behaviors, such as jealousy and gloating. Male sabertoothed cats were pussycats compared to macho lions Despite their fearsome fangs, male sabertoothed cats may have been less aggressive than many of their feline cousins, says a new study of male-female size differences in extinct big cats. Hormone that affects finger length key to social behavior The hormones, called androgens, are important in the development of masculine characteristics such as aggression and strength. Angry faces: Research suggests link between facial structure and aggression Angry words and gestures are not the only way to get a sense of how temperamental a person is. According to new findings in Psychological Science, a journal of the Association for Psychological Science, a quick glance at someone's facial structure may be enough for us to predict their tendency towards aggression. Stress-induced changes in brain circuitry linked to cocaine relapse Stress-evoked changes in circuits that regulate serotonin in certain parts of the brain can precipitate a low mood and a relapse in cocaine-seeking, based on mouse studies published online this week in the Proceedings of the National Academy of Sciences. When ants attack: Researchers recreate chemicals that trigger aggression in Argentine ants Experiments led by researchers at the University of California, Berkeley, have demonstrated that normally friendly ants can turn against each other by exploiting the chemical cues they use to distinguish colony-mates from rivals. Adolescents' gambling a part of a cluster of problem behaviors Ten percent of young adolescent boys -- or one in 10 -- exhibit a symptom of conduct disorder as well as a symptom of risky or problem gambling, according to new research findings from the University at Buffalo's Research Institute on Addictions (RIA). Being a standout has its benefits, study shows Standing out in a crowd is better than blending in, at least if you're a paper wasp in a colony where fights between nest-mates determine social status. Eating sweets every day in childhood 'increases adult aggression' Children who eat sweets and chocolate every day are more likely to be violent as adults, according to new research. More Aggression Current Events and Aggression News Articles |
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