In the 1962 Marsh Chapel Experiment almost all of the graduate degree divinity student volunteers who received psilocybin reported profound religious experiences .
The 1962 Marsh Chapel Experiment was run by Pahnke at the Harvard Divinity School under the supervision of Timothy Leary .
In the 1962 Marsh Chapel Experiment , which was run by Pahnke at the Harvard Divinity School under the supervision of Timothy Leary , almost all of the graduate degree divinity student volunteers who received psilocybin reported profound religious experiences .