Along with CBT, CBTraining also owes some debt to Albert Ellis's rational emotive behavior therapy (REBT), formerly known as Rational Emotive Therapy. REBT is classified as a form of CBT, and is anchored by the belief that a person is "affected emotionally by his/her perspective and attitude about outside things." As with CBTraining, REBT incorporates Positive Self-Image Psychology. Lou Ryan, a pioneer in the creation, development, and practical application of CBTraining, worked for some time under the guidance of Albert Ellis. In the early 1980s, Ryan, who was well-versed in Ellis's theories and philosophies, met Ellis in Hawaii after a series of seminars. Ellis recognized his own impact in Ryan's CBTraining programs, and played a peripheral part in some of the development.