This document discusses key concepts related to groups and teams in organizational behavior. It defines the differences between groups and teams, noting that teams are formed for a limited time to work interdependently on tasks that generate synergy. Various types of teams are described, including problem-solving, self-managed, cross-functional, and virtual teams. Important factors for effective team formation and performance are also outlined, such as leadership, task clarity, roles, size, diversity, and trust-building. Specific challenges that can impact teams like social loafing, groupthink, and communication barriers are explained. Additional concepts covered include shared mental models, team learning, and collective efficacy.