A recent study has indicated that psychopathic people have a larger striatum area in their brain.
By utilizing MRI scans, neuroscientists found out that psychopathic people possess a 10% larger striatum, a cluster of neurons in the subcortical basal ganglia of the forebrain. In psychopaths, it’s larger than in regular people, and this exemplifies a clear biological difference between psychopaths and non-psychopathic people.
Employing magnetic resonance imaging (MRI) scans, scientists found out that the striatum, an area of the forebrain, was 10% bigger in psychopathic people correlated to a control group of people with low or no psychopathic traits.
Psychopaths, or people with psychopathic traits, are people who have an arrogant and antisocial attitude. This is frequently characterized by an absence of guilt for their efforts, a lack of empathy for others, and, in some circumstances, criminal tendencies.
The striatum is a portion of the forebrain, namely the subcortical region of the brain that includes the whole cerebrum, which relates several elements of awareness, including motor and action planning, judgment making, motivation, reinforcement, and reward perception.
Prior study has indicated that psychopaths have overactive striatum, but the effect of its size on behavior is not yet confirmed. The new research suggests a significant biological disparity between people who display psychopathic tendencies and those who do not.
Professor Adrian Raine from the Departments of Criminology, Psychiatry, and Psychology at the University of Pennsylvania, who co-authored the study, stated, “Because biological traits, such as the size of one’s striatum, can be inherited to a child from a parent, these findings give added support to neurodevelopmental perspectives of psychopathy – that the brains of these offenders do not develop normally throughout childhood and adolescence.”