In this new RSA Animate, renowned psychiatrist and writer Iain McGilchrist explains how our 'divided brain' has profoundly altered human behaviour, culture and society. Taken from a lecture given by Iain McGilchrist as part of the RSA's free public events programme. To view the full lecture, go to www.youtube.com/watch?v=SbUHxC4wiWk.The RSA is a 258 year-old charity devoted to creating social progress and spreading world-changing ideas. For more information about our research, RSA Animates, free events programme and 27,000 strong fellowship. Find out more about the RSA at www.thersa.org Join the RSA on Facebook at www.facebook.com/thersaorg ------ Produced and edited by Abi Stephenson, RSA. Animation by Cognitive Media.