Brain scans reveal a difference between psychopaths and other people
5 hours ago
- #neuroscience
- #psychopathy
- #brain structure
- Brain scans show psychopaths have a striatum about 10% larger on average, linked to reward, motivation, and decision-making.
- The enlarged striatum is associated with thrill-seeking, impulsive behavior, and a stronger drive for stimulation in individuals with psychopathic traits.
- Psychopathy involves reduced empathy, little remorse, and a higher risk of violent behavior, but not all psychopaths are criminals.
- The study used MRI scans and the Psychopathy Checklist-Revised on 120 participants from the community, not just prison populations.
- Findings suggest psychopathy may involve neurodevelopmental differences, with brain structure possibly inherited and shaped by both biology and environment.
- Later research indicates psychopathy likely involves disruptions in broader brain networks, including frontal-subcortical circuits, beyond just the striatum.