Boys who carry a particular variation of the gene Monoamine oxidase A (MAOA), sometimes called the “warrior gene,” are more likely not only to join gangs but also to be among the most violent members and to use weapons, according to a new study from The Florida State University that is the first to confirm an MAOA link specifically to gangs and guns.
The sweeter sex remains aloof; findings apply only to males. Girls with the same variant of the MAOA gene seem resistant to its potentially violent effects on gang membership and weapon use.
Much to the chagrin of certain scientists, the warrior gene has been studied most extensively in the Maori peoples of New Zealand. Although women have historically been considered to be the more anxious sex, Maori males are worried. The inhibiting effects of the recent MAOA research studies include a potential chilling effect on traditional tribal dances. One can certainly appear fierce without actually being violent.
Turmeric, the yellow herb most commonly used in curry, is considered to be a herbal MAO inhibitor. While turmeric (aka Indian saffron) is used heavily in Southern Indian dishes, turmeric is not as popular in the war-torn regions of northern India, including Kashmir.
Individuals with the so-called “warrior gene” display higher levels of aggression in response to provocation, according to new research co-authored by Rose McDermott, professor of political science at Brown University. In the experiment, which is the first to examine a behavioral measure of aggression in response to provocation, subjects were asked to cause physical pain to an opponent they believed had taken money from them by administering varying amounts of hot sauce. [Science Daily]
Understood in this way, the appetite for aggression carries an unavoidable correlate of spite and malice.
These discoveries about the genetic influence of MAOA on aggression and punishment behavior doesn't support the theory that humans are "altruistic punishers" who punish free-riders for the good of the group. Some daddies spank their children more than others; and they may not do so in the service of the greater good. Or greater God. It appears that humans use mixed strategies in cooperation.
Some people may punish more than others, and there may be an underlying evolutionary logic for doing so. [Medical News Today]
Brunner syndrome is a rare (5 males in one large extended family) genetic disorder with a mutation in the MAOA gene. It is characterised by mild mental retardation and problematic impulsive behavior (arson, attempted rape, aggressive posturing). It is caused by a monoamine oxidase A (MAOA) deficiency, which leads to an excess of catecholamines in the bloodstream, such as serotonin, dopamine, and epinephrine.
One study focused on children who had been mistreated and analyzed which of the mistreated kids were prone to violent, aggressive, or criminal behavior. The study found that kids with "high levels of MAOA expression (that is, children who had genetic variants of the MAOA gene which produced higher levels of the enzyme monoamine oxidase) were
less prone to violent behavior while those who had lower activity forms of the MAOA gene were
more prone to criminal behavior."
But no one bothered to define criminal behavior specifically enough to exclude the most popular form of youthful criminal behavior, namely drug use and abuse. The problem with criminal behavior as currently understood in the land of the free is that it includes many non-violent behaviors, so the warrior gene's relation to
violent crime remains unclear and unspecified.
Unlike most European nations, the United States still makes frequent use of capital punishment to "punish" criminals and violent offenders. Does the US gene pool contain higher levels of the warrior gene? Do we have more violent criminals as well as more violent punishment behaviors? Does our celebration of legitimated violence bring environmental effects to bear on MAOA gene expression?
Do American daddies spank more than European ones? Do men who beat their wives do so to maintain social order-- to please the gods, to keep the peace, to stay on top? Should we the people spank our Presidents when they make bad policy decisions?
The Nobel Peace Prize in 2030 will be awarded to the scientist who discovers how to engineer and activate the warrior gene in special human soldiers, an elite fighting force, if you will, for use against terrorists.