Question: Research summaries have identified which of the following guidelines for group leadership practice? a. ?Leaders should strive for an impersonal and detached leadership style. b. ?Leaders should set and reinforce clear supportive norms as one way to establish cohesion within the group. c. ?Leaders should disclose the details of their personal lives to build trust with members regardless of the type of group. d. ?Leaders should adopt a more controlling leadership style, especially in the beginning stages.