Concord Prison Experiment - Results

Results

Records at Concord State Prison suggested that 64 percent of the 32 subjects would return to prison within six months after parole. However, after six months, 25 per cent of those on parole had returned, six for technical parole violations and two for new offenses. Few short-term projects with prisoners have been effective to even a minor degree. In addition, the personality test scores indicated a measurable positive change when pre-psilocybin and post-psilocybin results were compared.

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