20 Years Later: Psychology of Terror

People light candles at a memorial for the victims of the September 11 terrorist attacks on the World Trade Center in New York City on Sept. 15, 2001.

Jay Van Bavel, associate professor of Psychology & Neural Science at New York University and the co-author of The Power of Us: Harnessing Our Shared Identities to Improve Performance, Increase Cooperation, and Promote Social Harmony (Little, Brown Spark, 2021), talks about the way terrorist attacks affect communities.