Scientists Explore Neural Processes that Underlie Punishment

In a recent study published in the journal Nature Neuroscience, scientists identified the brain mechanisms that underlie our judgment of how severely a person who has harmed another should be punished. The study analyzed how that area of the brain determines whether a harmful act was intentional or unintentional, and how that effects the urge to punish the person. During the study, the brains of 30 volunteers were analyzed using fMRI imaging while they read a series of brief scenarios that described how the actions of a protagonist named John brought harm to either Steve or Mary. The scenarios depicted four different levels of harm: death, maiming, physical assault and property damage. In half of the scenarios, the harm was clearly identified as intentional and in the other half, it was clearly identified as unintentional. The results of the study showed that manipulations of gruesome language lead to a larger punishment, specifically when the actions were described as intentional. Additionally, the fMRI scans revealed that the amygdala responded most strongly to the graphic language condition of each scenario, however, this effect in the amygdala was only present when the harm was done intentionally. To read more about this study, click here.