This document discusses groups and teams in organizations. It defines groups as two or more people who interact to accomplish a goal, while teams work intensively together to achieve a specific common goal. Teams can improve organizational performance by enhancing innovation, motivation, and gaining a competitive advantage through increased responsiveness to customers. Effective groups and teams are impacted by factors such as their size, tasks, roles, development stages, norms, cohesiveness, and managing social loafing. Managers should consider these dynamics to help groups and teams achieve peak performance levels.