A group is defined as two or more individuals interacting and interdependent who have come together to achieve particular objectives. Groups in organizations can be formal or informal. Formal groups are created to achieve organizational objectives, while informal groups are based on personal relationships. Groups develop over time through various stages including forming, storming, norming, performing, and adjourning. Group structure and dynamics influence member behavior and include leadership, roles, norms, and status. Group decision making is a participatory process where members collectively analyze problems, consider alternatives, and select solutions. High performing teams are focused on goals and achieve superior results.