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 today in the journal Social Cognitive and Affective Neuroscience.
Will you offer us a hand? Every gift, regardless of size, fuels our future.
Your critical contribution enables us to maintain our independence from shareholders or wealthy owners, allowing us to keep up reporting without bias. It means we can continue to make Jewish Business News available to everyone.
You can support us for as little as $1 via PayPal at [email protected].
Thank you.
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 desensitised to violence and how personality and group membership of both perpetrator and victim influence these processes.
