Vztah efektivity leadera, transakčního a transformačního leadershipu: Jak působí posilující efekt?
Link among leader effectiveness, transactional and transformational leadership: how does the augmentation effect work?

Summary/Abstract: The study explores a relationship among transactional leadership, transformational leadership and leader effectiveness, measuring leader effectiveness by three different methods. The aim is to explain the augmentation effect of transformational leadership on transactional leadership. Evaluation of 134 top managers of game companies by 2,446 subordinates took place after three months of intense cooperation during a management simulation game. All respondents were college students. Results show that transformational leadership mediates strongly the relationship between transactional leadership and perceived leader effectiveness and the relationship between transactional leadership and leadership emergence. Transformational leadership is a medium strong mediator in the relationship between transactional leadership and group performance. The moderation effect of transactional leadership in the relationship between transformational leadership and leader effectiveness is not significant. Transactional leadership tools alone do not influence leader effectiveness when controlling for the influence of transformational leadership. The findings are valid for teams with low distance of power and for leaders with weak formal authority.

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