DURHAM, N.C. (ABP) – About one in five Protestant churches in America is now independent of any denomination, and about one in five Protestants attends those independent churches, Duke sociologist Mark Chaves says in his new book American Religion: Contemporary Trends. Chaves, professor of sociology, religion, and divinity at Duke University in Durham, N.C., and director of the National Congregations Study, says the number of Protestants attending independent churches increased from 14 percent in 1989 to 19 percent in 2006. “If the unaffiliated congregations were all in one denomination, they would constitute the second largest in number of participants (behind...