The term world Christianity has been widely used since the publication of Philip Jenkins’s 2002 best seller The Next Christendom, but in popular usage it has tended to refer only to Christianity in the Global South. Though courses on world Christianity have proliferated, no one until Douglas Jacobsen has taken the care to delineate the contours of the entire global movement.
Richard Gallagher, a board-certified psychiatrist and professor of clinical psychiatry at New York Medical College, was skeptical when a priest/exorcist asked his opinion of a woman diagnosed with demonic possession. In time Gallagher’s scientific habits of observation led him to believe that in rare cases, the only explanation for bizarre behavior is that it’s the work of evil spirits. Over the past 25 years he has consulted with hundreds of ministers, helping them to distinguish between mental illness and demonic possession. Gallagher, a practicing Catholic, is working on a book about demonic possession in the United States (Washington Post, July 1).