More than eighty percent of big companies in the US and the UK have identified their corporate culture or values, with the same words cropping up again and again. But often the employees of these companies think the stated values do not reflect reality, consider them little more than marketing or perhaps are even unaware they exist. In this episode of The Big Question, Chicago Booth's Luigi Zinagles, Amanda Sharkey and Alain Cohn discuss what corporate culture is and whether leaders can change that culture if it goes bad.