Jay Haley was an influential American psychotherapist and a key figure in the development of family therapy. He was born on July 15, 1923, and passed away on December 4, 2007. Haley is best known for his work in strategic therapy, which focuses on solving specific problems within family dynamics. He emphasized the importance of communication patterns and the roles individuals play within their families. Haley co-founded the MRI (Mental Research Institute) in Palo Alto, California, where he contributed to the evolution of therapeutic techniques. He authored several books, including "Problem-Solving Therapy," which outlines his approaches to treatment. His work has had a lasting impact on the fields of psychology and psychotherapy.