Dr. Aaron T. Beck developed cognitive-behavioral therapy (CBT) at the University of Pennsylvania in the 1960s. He based his work on studies done by psychologist Albert Ellis in the 1950s. Ellis is considered one of the founders of cognitive therapy, and Beck is the one who joined cognitive principles with behaviorism. Early researchers into both cognitive and behavioral therapies understood the link between actions and a person's beliefs and thoughts.…
Melissa BeitlerJune 7, 2022










