Betty Grover Eisner (September 29, 1915 – July 1, 2004) was an American psychologist known for pioneering the use of LSD and other psychedelic drugs as adjuncts to psychotherapy.
In the 1990s, she maintained a private practice in Santa Monica, California, occasionally publishing articles on psychotherapy and serving on the board of advisors for the Albert Hofmann Foundation.
Along with Sidney Cohen, Eisner appears to have originated the practice of using simultaneous male and female therapists or researchers during human hallucinogen administration.
[2]: 26, 98 In addition to using hallucinogens like LSD and mescaline in psychedelic therapy, Eisner also gave stimulants such as methylphenidate and the inhaled gas mixture carbogen to her patients.
She considered the specific individuals present as an important variable in therapeutic outcome and sometimes conducted sessions in group settings.