What happens when people gather in crowds – whether for political rallies, protests, football games or religious pilgrimages? Stephen Reicher, PhD, of St. Andrew’s University in Scotland, discusses why “mob mentality” is a myth; other misconceptions about crowd behavior; the role of leaders in groups and what can we learn from re-examining some classic psychology studies on obedience to authority; and what we’ve learned about leaders, followers, group identity and collective behavior from the COVID-19 pandemic. For transcripts, links and more information, please visit the Speaking of Psychology Homepage.