Family therapy provides a way of thinking in systemic, relational terms, and a set of strategies for intervening with individuals, couples, families, and other systems. Whether the client is a large family or a single person, family therapy focuses on changing relational interactions. In addition to this relationship focus, family therapy considers biological, environmental, and cultural influences on the client. In this book, William J. Doherty and Susan H. McDaniel present and explore this approach, its theory, history, the therapy process, primary change mechanisms, empirical basis, and future developments.