Formal groups may be organic, task-directed, or committees. Informal groups arise when it becomes obvious that a group will work better or may be formed by a discipline within the organization or through friendships. The size of the group its status within the organization, the goals established, and the dependence of the members on the group all may affect the cohesiveness of the group. Leadership of the group must keep the group focused on the objectives and enhancement of the efficiency of its operation and the quality of the decisions made by the group. Motivation of a group often is more difficult than is that for individuals and generally positive inducements work better than do negative measures such as coercion and reprimands.
Roles are often informal and conferred by the group collectively.
Often norms are established within groups that help the group deal with conflict. Understanding the dynamics of groups is an essential skill required of good managers. Managing work groups.