Relational competence-the set of traits that allow people to interact with each other effectively-enjoys a long history of being recorded, studied, and analyzed. Accordingly, Relational Competence Theory (RCT) complements theories that treat individuals' personality and functioning individually by placing the individual into full family and social context. The ambitious volume Relational Competence Theory: Research and Mental Health Applications opens out the RCT literature with emphasis on its applicability to interventions, and updates the state of research on RCT, examining what is robust...