She studied extreme psychopaths. Here’s what it taught her about human nature | Abigail Marsh

Become a Big Think member to unlock expert classes, premium print issues, exclusive events and more: https://bigthink.com/membership/?utm_... Are humans naturally selfless? Psychologist Abigail Marsh is using studies on psychopathy and altruism to find out. Subscribe to Big Think on YouTube ►    / @bigthink   Up next, Why psychopaths rise to power ►    • Why psychopaths rise to power | Brian Klaas   Abigail Marsh, a psychology and neuroscience professor at Georgetown University, explains how the world is impacted by those with psychopathy, and, additionally, those who practice extreme altruism. Psychopathy, she says, is a neurodevelopmental disorder affecting a small percentage of people, who are different from a very early age due to their unique brain development. Conversely, she talks about people who are exceptionally altruistic—those who go out of their way to help others, often at great personal risk. These individuals are humble, believe in the goodness of others, and are highly empathetic. She concludes by explaining that acts of generosity have been increasing on a global scale, and how these trends have proven that it is possible for individuals to change their own natural levels of altruism. Through awareness and action, we can build a more caring and helpful society for ourselves and generations to come. Please note: We apologize for the errors in our video. In the brain diagram starting at 0:57, "Rostral anterior cingulate cortex" is misspelled, and the diagram mistakenly highlights other brain regions near the intended ones. We always try our best but are disappointed when we get it wrong. Thanks to our wonderful BT audience for your attention to detail! If you’re curious about your own levels of altruism, Marsh suggests using online tests like the TriPM or HEXACO personality tests. The TriPM test: https://psychopathyis.org/screening/t... The HEXACO test: https://survey.ucalgary.ca/jfe/form/S... Read the video transcript ► https://bigthink.com/series/the-big-t... ---------------------------------------------------------------------------------- Go Deeper with Big Think: ►Become a Big Think Member Get exclusive access to full interviews, early access to new releases, Big Think merch and more. https://members.bigthink.com/?utm_sou... ►Get Big Think+ for Business Guide, inspire and accelerate leaders at all levels of your company with the biggest minds in business. https://bigthink.com/plus/great-leade... ---------------------------------------------------------------------------------- About Abigail Marsh: Abigail Marsh is a Professor in the Department of Psychology and the Interdisciplinary Neuroscience Program at Georgetown University. She received her PhD in Social Psychology from Harvard University in 2004.