Final answer:
Authoritarian leadership has a communication pattern that flows from the top down.
Step-by-step explanation:
In the context of leadership communication patterns, the type of group leadership that has a communication pattern flowing from the top down is authoritarian.
An authoritarian leader typically makes decisions independently and communicates them directly to the group members without much input or discussion. This style of leadership is characterized by a centralization of decision-making power and a top-down flow of information.
This leadership style can be contrasted with democratic leadership, where decision-making is more democratic and participatory, as well as laissez-faire leadership, where there is minimal direction or control from the leader.