Big Think She studied extreme psychopaths. Here’s what it taught her about human nature | Abigail Marsh
May 16, 2025
In this enlightening discussion, Abigail Marsh, a Professor of Psychology and Neuroscience at Georgetown University, delves into the fascinating worlds of psychopathy and altruism. She reveals how psychopaths differ in brain development from a young age, impacting their empathy. Marsh highlights the rising trend of extraordinary altruists—those who risk personal safety to help others. She emphasizes that altruistic behaviors can be nurtured and suggests tests for assessing one's own level of kindness, advocating for small acts to foster a more compassionate society.
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Human Nature: Psychopathy vs Altruism
- Psychopathy shows humans are not fundamentally selfish as some lack care for others.
- The existence of altruistic behavior shows our capacity for caring is natural and present on a spectrum.
Gary Ridgway's Mask of Sanity
- Gary Ridgway, the serial killer known as the most psychopathic criminal, killed dozens, showing extreme lack of empathy.
- Despite horrific acts, he appeared outwardly normal, embodying the 'mask of sanity.'
Core Traits of Psychopathy
- Psychopathy is a neurodevelopmental disorder affecting 1-2% with traits like callousness, fearlessness, and impulsivity.
- These traits impair fear recognition and risk response, explaining antisocial and aggressive behavior patterns.