Communication patterns describe how information flows within groups. There are several common patterns: circle (hierarchical with the leader communicating directly only with subordinates), chain (linear one-way flow up or down the chain), wheel (all members communicate directly with the central leader), network (interconnected flow laterally and hierarchically), and Y (information flows up each arm of the Y to the central leader and back down). Understanding communication patterns is important for work efficiency, satisfaction, and decision-making within groups.