and setting, preferably with the guidance of professionals, could alter behavior in dramatic and beneficial ways. Leary began conducting experiments with psilocybin in 1960 on himself and a number of Harvard graduate students after trying hallucinogenic mushrooms used in Native American religious rituals while visiting Mexico. His group began conducting experiments on state prisoners, where they claimed a 90% success rate preventing repeat offenses. Later reexamination of Leary's data reveals his results to be skewed, whether intentionally or not; the percent of men in the study who ended up back in prison later in life was approximately 2% lower than the usual rate. Leary was later introduced to LSD, and he then incorporated that drug into his research as his mental catalyst of choice. Leary claimed that his experiments produced no murders, suicides, psychotic breaks, or bad trips. Almost all of Leary's participants reported profound mystical experiences which they felt had a tremendously positive effect on their lives. While it is true that Leary's experiments did not lead to any murders, he willfully chose to ignore the bad trips which occurred, as well as the attempted suicide of a woman the day after she was given mescaline by Leary. By 1962, the Harvard faculty's disapproval with Leary's experiments reached critical mass. Leary was informed that the CIA was monitoring his research (see Government experiments below). Many of the other faculty members had harbored reservations about Leary's research, and parents began complaining to the university about Leary's distribution of hallucinogenic drugs to their children. Further, many undergraduate students who were not part of Leary's research program heard of the profound experiences other students had undergone and began taking LSD for recreational purposes, which was not illegal at the time . Leary described LSD as a potent aphrodisiac in an interview with Playboy magazine. Leary left the university for an extended amount of time during the spring semester, thus failing to fulfill his duties as professor. Leary and another Harvard psychologist, Richard Alpert, were dismissed from the university in 1963. In 1964, they published The Psychedelic Experience: A Manual Based on the Tibetan Book of the Dead, which argued that the psychedelic experience paralleled the death/rebirth experience described in the Bardo Thodol (Tibetan Book of the Dead). Leary and Alpert, unfazed by their dismissals, relocated first to Mexico, but were expelled from the country by the Mexican government. They then set up