This document discusses team dynamics and effectiveness. It defines teams and different types of teams. It outlines key factors that influence team effectiveness, including task characteristics, team size, composition, processes, cohesion, and trust. Virtual and self-directed teams are described. Challenges to team decision making like time constraints, evaluation apprehension, and groupthink are also summarized. Guidelines for team decisions, managing conflict, and decision making techniques like brainstorming and the nominal group technique are provided.