This study represents a multi-method, multi-source, and longitudinal evaluation of a leadership development program in Germany. For the development of transformational leadership, the methods of leadership feedback, training, and coaching were combined into a program. The effects of this program...

For modern organizations, shared leadership becomes increasingly important. Knowledge on shared leadership may be limited, as past research often relies on cross-sectional data or student samples, and most studies neglect the multilevel nature of shared leadership. Our research model includes...