The attacks on the World Trade Centre and the Pentagon in the United States of September 11th 2001 brought the phenomenon of religious fundamentalism to the world’s attention. Peter Herriot has spent most of his working life as an academic, as a visiting professor at the University of Surrey and at the Open University Business School. Since retiring, he has sought to apply social and organizational psychology to the understanding of religious fundamentalism. In this podcast we talk to Peter Herriot about religious fundamentalism from a social psychological perspective, and about his new book “Religious Fundamentalism and Social Identity” which applies social identity theory to fundamentalism. Case studies of Mohammed Atta, the leader of the 9/11 hijackers, and of the current controversy in the Anglican Church about gay priests and bishops, demonstrate how fruitfully this theory can be applied to fundamentalist conflicts. Less