Psychopathy linked to expanded cortical surface in 800 incarcerated men

A study of 804 incarcerated men finds that higher psychopathy scores are linked to an expanded cortical surface area and a compressed cortical gradient, with distinct relations between empathy types and psychopathic traits and region-specific changes in social-emotional brain regions; the authors note limitations from self-report empathy measures and the male-inmate sample, recommending broader replication and exploration of underlying cellular mechanisms.