Book review by Joan Acocella, The New Yorker, April 2, 2012

The United States, as we know, is a very religious country, but the figures still have the power to amaze. Since 1996, according to Gallup polls, between thirty-five and forty-seven per cent of Americans have described themselves as “evangelical” or “born again”; two-thirds mostly or wholly believe that angels and devils are at work in the world. Given these figures, skeptics would do well to find out what is going on in evangelical churches, and that is what T. M. Luhrmann tries to explain in her new book, “When God Talks Back: Understanding the American Evangelical Relationship with God” (Knopf). Luhrmann is a well-qualified guide: an anthropologist specializing in esoteric faiths. Her dissertation was on witch-and-warlock cults in contemporary England. Later, she wrote a book on the Parsis, a Zoroastrian community in India. Her most recent book was the highly praised “Of Two Minds,” a study of psychiatric residents and their handling of patients who had visions, among other problems. Almost always, Luhrmann has written with sympathy, not scorn, for these convinced people.

Nevertheless, she is a scientist, and believes in evidence. She spent two years as a full-time member of an evangelical church in Chicago, and another two years in a congregation in Palo Alto [....]