This document discusses groups, teams, and trust. It covers fundamental group dynamics including roles, norms, and attraction to groups. It describes the six stages of group development from orientation to acceptance. It discusses organizational politics and how it can both help and hinder organizations. The concept of groupthink is introduced along with ways to prevent it. Cross-functional and virtual teams are defined. The key factors that make teams effective are listed. Building trust is identified as important for team effectiveness, and six ways for managers to build trust are provided.