From politics to travel, sports to conspiracy theories, the groups we're in hugely change the way we see and interact with the world. In this episode we look talk to a leading social psychologist about how group identity works.

Expert guest:
Dr Jay Van Bavel is a multi-talented and multi-award winning researcher, academic, author and academic. He is currently the Associate Professor of Psychology & Neural Science at New York University, an affiliate at the Stern School of Business in Management and Organizations, and Director of the Social Identity & Morality Lab. He is the co-author of the fantastic new book “The Power of Us: Harnessing Our Shared Identities to Improve Performance, Increase Cooperation, and Promote Social Harmony”. You can learn more on his website and follow him on Twitter.

Comedy guest:
Comedian and writer Tommy Ettling has worked in comedy for more than a decade, working in television, radio and stand up. He currently lives in Mexico City where he helms the newly launched “Duke’s Island Comedy Revue.” You can check him out on Twitter,