Tribal Leadership: Leveraging Natural Groups to Build a Thriving Organization /by Dave Logan, John King and Halee Fischer-Wright . Every organization is composed of tribes—naturally occurring groups of between 20 and 150 people. Until now, only a few leaders could identify and develop their tribes, and those rare individuals were rewarded with loyalty, productivity, and industry-changing innovation. Tribal Leadership shows leaders how to assess, identify, and upgrade their tribes' cultures, one stage at a time. The result is an organization that can thrive in any economy.