The research on entrepreneurial top management teams has received growing interest within past decades. This book aims to enhance the trend of investigating top management teams in an entrepreneurial context. It is especially the outcomes of new ventures during the start-up phase which set a course for success or failure and therefore are in the focus. As young firms do not consist of organizational norms and structures as more mature firms, the shaping influence of the entrepreneurial management team at the top of a new venture is expected to be stronger compared to more mature firms. Thus, this book is based on the assumption to reveal even more significant findings when focusing on an early venture development stage where the influence of human capabilities and social dynamics has more deterministic power. Not only the introduced capabilities of each individual matter alone, but especially the complex interactions among team members affect group processes and ultimately the performance of the team as a whole. This book closes the gap between entrepreneurial top management research and social exchange relationships among the team.