Provocation; frustration; retaliation
I love eden's answer, however I do think some of violent behavior comes from being in a violent environment and is a choice of acting on an impulse and how about those who join the military, box and the children warriors of Darfur they don't all have this gene do they?
Violence does lead to more violence..due to the 3 things mentioned above. People usually react violently to violence. See 9/11.
2007-03-03 13:05:41
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answer #1
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answered by margherita 4
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Violent Behavior and the Brain - Do we know it all?
Ingrid Katz
Violence - pure and simple, is intrinsic to humanity. It almost goes unnoticed as a way of life in many communities.
Social scientists have begun to suggest that, in fact, violent crime needs to be viewed much like an infectious disease.
Further work has been done on the sociological factors affecting men who abuse their wives.
The study examines the pscho-social factors that cause men to act violently.
Researchers have found that men who fear abandonment and have witnessed a high level of abuse in their family are often prone to be more violent.
Still, other studies on the topic have found that men who have suffered head-injury are six times more likely to abuse their partner than non-aggressive men.
Although it is certain that genetics alone cannot explain a pattern of violence in any individual, it may certainly play a contributory role in the manifestation of violent behavior.
Several studies suggest that reduced levels of the central nervous system (CNS) neurotransmitter serotonin may be associated with aggressive behavior, which, in turn can lead to violent behavior.
Further studies have shown that suicidal individuals may have reduced serotonin levels in the brain. These studies suggest that serotonin may play a part in impulsive aggressive behavior.
Additional research published in Discover Magazine on genetic research has revealed that a specific stretch of DNA along a chromosome, if mutated, may produce violent behavior.
The study of a family in which ten men over five generations displayed violent behavior has led geneticists to form specific causal links. It was noted that all violent family members were male, and the trait seemed to be passed from mother to son, suggesting that the trait for aggressive behavior may be carried one the single X chromosome of males.
These same researchers found that all living males who were violent had the same genetic marker and so did some of the women in the family, who would be carriers of the defect.
The non-violent men in the family were not found to have the genetic marker. Researchers suspect one gene that codes for the enzyme monoamine oxidase A (MAOA) may be malfunctioning
Further research on the biological causes of violent behavior has pointed less to a genetic link and more to brain damage that has occurred to the fetus or postnatal infant.
As Adrian Raine notes in the Journal of Biological Psychiatry, murderers' brains show a significantly lower rate of glucose uptake than a healthy brain.
The study, conducted by Raine and colleagues at USC and the University of California at Irvine, used positron emission tomography to scan the brains of 41 murderers who had pleaded not guilty due to reasons of insanity.
This was followed by a scan of 41 brains of control subjects matched for known mental disorders, as well as for age and gender.
The study showed that the murderers, on average, showed significantly lower rates of glucose uptake in three areas of the brain -- the prefrontal cortex, the corpus callosum and the posterior cortex.
This research demonstrates a link between brain damage and criminal violence, eliminating the possibility that mental disorders alone predispose criminals to violence.
This model is certainly the more wholistic one when assessing an individual's desire to commit a violent act. Still, it leaves open the question of just how essential the brain is during the process of whether or not to act violently. .
2007-03-04 05:39:42
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answer #2
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answered by Eden* 7
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Jealousy, Greed, Protectiveness (as a parent for their child who is being hurt).
2007-03-03 21:04:45
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answer #3
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answered by ♫ frosty ♫ 6
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dumb people/ un educated, boredom, en equality
2007-03-03 21:06:14
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answer #4
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answered by TEBOE7 3
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