W. Robert Beavers was a leading figure in family systems therapy and made significant contributions to the field. Based on his own research he developed the Beavers System Model of Family Functioning, which provides the structure and tools for assessing families. Additionally, he provided treatment and intervention techniques for working with families. Beavers also suggested some insights on using a systems approach in couples’ therapy and supervising from a family systems perspective. Beavers contributed 3 books and over 40 journal articles to the field.