According to the study by De Cremer and Knippenberg,why do leader self-sacrifice and leader self-confidence interact?

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The study found that leader self-sacrifice and leader self-confidence interact because both of these attributes affect collective identification through slightly different routes. Specifically, leader self-sacrifice enhances identification by signaling the leader's willingness to prioritize the group's interests over their own, while leader self-confidence enhances identification by signaling the leader's belief in their ability to guide the group towards success. This suggests that the two attributes can complement each other in creating a strong sense of collective identification among employees.

According to the Study by De Cremer and Knippenberg,why Do