APR 08, 2015 2:16 PM PDT

'Moral' Brain May Get Switched Off in Killers

WRITTEN BY: Will Hector
A new study has thrown light on how people can become killers in certain situations, showing how brain activity varies according to whether or not killing is seen as justified.

The study, led by Monash researcher Dr. Pascal Molenberghs, School of Psychological Sciences, is published in the journal Social Cognitive and Affective Neuroscience.

Participants in the study played video games in which they imagined themselves to be shooting innocent civilians (unjustified violence) or enemy soldiers (justified violence). Their brain activity was recorded via functional magnetic resonance imaging (fMRI) while they played.

Dr. Molenberghs said the results provided important insights into how people in certain situations, such as war, are able to commit extreme violence against others.

"When participants imagined themselves shooting civilians compared to soldiers, greater activation was found in the lateral orbitofrontal cortex (OFC), an important brain area involved in making moral decisions," Dr. Molenberghs said.

"The more guilt participants felt about shooting civilians, the greater the response in the lateral OFC. When shooting enemy soldiers, no activation was seen in lateral OFC."

The results show that the neural mechanisms that are typically implicated with harming others become less active when the violence against a particular group is seen as justified.

"The findings show that when a person is responsible for what they see as justified or unjustified violence, they will have different feelings of guilt associated with that -- for the first time we can see how this guilt relates to specific brain activation," Dr Molenberghs said.

The researchers hope to further investigate how people become desensitized to violence and how personality and group membership of both perpetrator and victim influence these processes.

(Source: Monash University; Science Daily)
About the Author
  • Will Hector practices psychotherapy at Heart in Balance Counseling Center in Oakland, California. He has substantial training in Attachment Theory, Hakomi Body-Centered Psychotherapy, Psycho-Physical Therapy, and Formative Psychology. To learn more about his practice, click here: http://www.heartinbalancetherapy.com/will-hector.html
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