Book excerpt: This text provides a good balance of theory and practice. It combines cutting-edge research on groups with practical management principles. The text is organized into 3 primary tasks for the leader/manager: 1) Accurately assessing and improving team performance; 2) Managing the internal dynamics of teams (diversity, conflict, and creativity); and 3) Optimally leveraging the team within the larger organization. It is written for both team leaders and team members.