This monograph summarises the key influences of leadership behaviour on the transformation process associated with the creation of an effective and high performing team. It clarifies the key factors that are relevant to a team at each stage of the transformation process and the leadership roles that each team member can play. The role of an organisation's senior management is considered both in terms of the impact it has on the transformation process within specific teams and in terms of creating the necessary organisational environment to make effective teams the norm. Some reasons why senior management behaviour is often perceived as inconsistent and unhelpful are explored. Specific recommendations are made to help senior managers to adapt their behaviour, and in so doing become more context-sensitive to the needs of the environment as it changes. Some tools and techniques are presented that have been found in practice to help senior managers adapt their behaviour to that most appropriate at a given time, and to create the organisational infrastructure needed to make effective teams the organisational norm rather than the exception. A case study is presented illustrating the networked nature of leadership and the culture change associated with making effective teams "the way we do things around here".