Systems Theory and Family Therapy describes the basic concepts of systems theory and its application in family therapy in a clear, understandable manner with many illustrations drawn from clinical practice. This edition provides a revised and updated version of the original, that simplifies a complex area of study, enabling students to learn the subject more easily without being overwhelmed by the language normally employed in presenting these subjects. The authors discuss the distinctions between modernism and postmodernism as well as first-order and second-order cybernetics. They also include discussions of constructivism and social constructionism, as well as the ramifications of these perspectives for the theory and practice of family therapy.