Psilocybin-occasioned mystical-type experience in combination with meditation and other spiritual practices produces enduring positive changes in psychological functioning and in trait measures of prosocial attitudes and behaviors Roland R. Griffiths, Matthew W. Johnson, William A. Richards, Brian D. Richards3, Robert Jesse, Katherine A. MacLean, Frederick S. Barrett, Mary P. Cosimano and Maggie A. Klinedinst Journal of Psychopharmacology, 2018, 32, 1, 49-69. DOI: 10.1177/0269881117731279   Abstract Psilocybin can occasion mystical-type experiences with participant-attributed increases in well-being. However, little research has examined enduring changes in traits. This study administered psilocybin to participants who undertook a program of meditation/spiritual practices. Healthy participants were randomized to three groups (25 each): [...]