The nurse manager forms a focus group of staff nurses to explore options for staffing. Which action by the nurse manager helps to create an environment for effective group decision making? (Select all that apply.) 1. Selects staff members who are homogeneous. 2. Provides positive feedback to group members. 3. Keeps the group focused on the task. 4. Establishes with the group how decision making will be done. 5. Discusses both advantages and disadvantages of decisions. 6. Determines the size and specific members of the group