Jean-Louis Monestès, Ph.D., is a full Professor of clinical psychology at Grenoble Alpes University, France, and a clinical psychologist. He worked in different psychiatric hospitals for 15 years before taking his actual position. He has been exploring the use of evolutionary principles in psychology for 20 years. Jean-Louis Monestès published several chapters on evolutionary processes in clinical psychology with Steven Hayes and David Sloan Wilson, as well as several articles and books on Acceptance and Commitment Therapy (ACT) and its theoretical background Relational Frame Theory (RFT). He is a clinical supervisor for ACT/RTF and leads the Clinical Psychology and Cognitive Processes research team in his university lab.