Sept. 29, 2011 -- Psilocybin, the drug in “magic mushrooms,” helps many people become more open, creative, and curious after they take a single high dose, a new study shows. Ordinarily, researchers say, after age 30 personality is a pretty fixed part of who we are. When people do change their stripes, it’s usually in the wake of significant life events that cause emotional upheaval, like marriage, divorce, or getting fired from a job. Researchers say the new study, which is published in the Journal of Psychopharmacology, is one the first to show that a drug, when used in an experimental setting, can alter personality long term.