The Emergence of Shared Leadership in Newly Formed Teams With an Initial Structure of Vertical Leadership: A Longitudinal Analysis

The importance of high-quality leadership for team effectiveness is widely recognized, with recent viewpoints arguing shared leadership to be a more powerful predictor than vertical leadership. To identify changes in leadership structures over time, we longitudinally tracked the leadership structure of 27 newly formed teams (N = 195), all having an initial structure of vertical leadership. Our findings demonstrated that the average team leadership strengthened over the course of the 24-week project and leadership tended to become more distributed among team members. Regarding the antecedents of these changes, we found evidence that the more team members are perceived as warm or competent, the higher their perceived influence. Finally, examining the consequences of these changes, the leadership structure was found to be related with team performance in that teams with higher average leadership perceptions performed better. These findings underpin the importance of shared leadership, thereby suggesting leaders to empower their team members