“…Team leadership is an integrated concept based on the literature on teams and leadership (Day, Gronn, & Salas, ; Zaccaro, Rittman, & Marks, ). Shared leadership can be viewed as one form of team leadership (Hoch & Kozlowski, ; Lord et al, ; Van Knippenberg, ). Compared with shared leadership, team leadership is a broader construct, because it includes influences from both horizontal leadership (team members) and vertical leadership (the formal team leader; Day et al, ; Morgeson et al, ).…”