American religious identification survey (ARIS 2008)

Conducted between February and November of last year, ARIS 2008 is the third in a landmark series of large, nationally representative surveys of U.S. adults in the 48 contiguous states from 1990-2008. Employing the same research methodology as the 1990 and 2001 surveys, ARIS 2008 questioned 54,461 adults in either English or Spanish. With a margin of error of less than 0.5 percent, it provides the only complete portrait of how contemporary Americans identify themselves religiously, and how that self-identification has changed over the past generation.