Roughly one-in-five U.S. adults were raised with a mixed religious background, according to a new Pew Research Center study. This includes about one-in-ten who say they were raised by two people, both of whom were religiously affiliated but with different religions, such as a Protestant mother and a Catholic father, or a Jewish mother and a Protestant stepfather. An additional 12% say they were raised by one person who was religiously affiliated (e.g., with Protestantism, Catholicism, Judaism or another religion) and another person who was religiously unaffiliated (atheist, agnostic or “nothing in particular”).