Timothy Leary and his Harvard research team had hopes for potential changes in society. Their research began with psilocybin mushrooms and was called the Harvard Psilocybin Project. In one study known as the Concord Prison Experiment, Leary investigated the potential for psilocybin to reduce recidivism in criminals being released from prison. After the research sessions, Leary did a follow-up. He found that "75% of the turned on prisoners who were released had stayed out of jail." He believed he had solved the nation's crime problem. But with many officials skeptical, this breakthrough was not promoted.