This document discusses groups and managing work teams. It defines a group as two or more interacting individuals who come together to achieve goals. There are typically five stages of group development: forming, storming, norming, performing, and adjourning. Key concepts in group behavior include roles, norms, and status. Group size can affect behavior - large groups are good for diverse input while small groups are faster at implementation. Teams are formed to be more effective than individuals on tasks requiring multiple skills. Effective teams have adequate resources, clear leadership/structure, trust among members, and a performance evaluation system.