Murderers May Be Hardwired to Kill

Brasidas wrote:Is being born that way soley the fact that someone kills?

Fuzzy Zack wrote:

Brasidas wrote:Is being born that way soley the fact that someone kills?

So you're saying there is an element of choice also. I agree.

Along with brain scans, Fallon also tested each family member's DNA for genes that are associated with violence. He looked at 12 genes related to aggression and violence and zeroed in on the MAO-A gene (monoamine oxidase A). This gene, which has been the target of considerable research, is also known as the "warrior gene" because it regulates serotonin in the brain. Serotonin affects your mood — think Prozac — and many scientists believe that if you have a certain version of the warrior gene, your brain won't respond to the calming effects of serotonin.

Fallon calls up another slide on his computer. It has a list of family members' names, and next to them, the results of the genotyping. Everyone in his family has the low-aggression variant of the MAO-A gene, except for one person.

"You see that? I'm 100 percent. I have the pattern, the risky pattern," he says, then pauses. "In a sense, I'm a born killer."

Fallon's being tongue-in-cheek — sort of. He doesn't believe his fate or anyone else's is entirely determined by genes. They merely tip you in one direction or another.

And yet: "When I put the two together, it was frankly a little disturbing," Fallon says with a laugh. "You start to look at yourself and you say, 'I may be a sociopath.' I don't think I am, but this looks exactly like [the brains of] the psychopaths, the sociopaths, that I've seen before."

I asked his wife, Diane, what she thought of the result.

"I wasn't too concerned," she says, laughing. "I mean, I've known him since I was 12."

Diane probably does not need to worry, according to scientists who study this area. They believe that brain patterns and genetic makeup are not enough to make anyone a psychopath. You need a third ingredient: abuse or violence in one's childhood.