Story perspectives

Study Reveals Larger Striatum in Psychopaths: Impulsivity Link

10/29/2025

43 7

Summary

Story summary

Researchers from Nanyang Technological University, the University of Pennsylvania, and California State University found the striatum is 10% larger in psychopaths than non-psychopaths.
The enlargement is linked to impulsivity and a craving for stimulation, and the study involved 120 adults.
The findings support a neurodevelopmental view of psychopathy, suggesting structural brain differences may arise in childhood and warrant further investigation.

1 of 1

Story summary

Researchers from Nanyang Technological University, the University of Pennsylvania, and California State University found the striatum is 10% larger in psychopaths than non-psychopaths.
The enlargement is linked to impulsivity and a craving for stimulation, and the study involved 120 adults.
The findings support a neurodevelopmental view of psychopathy, suggesting structural brain differences may arise in childhood and warrant further investigation.