" One authoritative account is given by the psychologist Richard Bentall in an article titled “Hallucinatory Experiences.”15 Bentall says that the first real attempt to see whether it was possible for people to have nonveridical visions without suffering from physical or mental illness came at the end of the nineteenth century. A man named H. A. Sidgewick interviewed 7,717 men and 7,599 women and found that 7.8 percent of the men and 12 percent of the women reported having had at least one vivid hallucinatory experience. The most common vision was of a living person who was not present at the time. A number of the visions involved religious or supernatural content. The most common visions were reported by people who were twenty to twenty-nine years old. "
― Bart D. Ehrman , How Jesus Became God: The Exaltation of a Jewish Preacher from Galilee