Sentence:  Suppose that we administered a scale that measures support for capital punishment at the interval-ratio level to a randomly selected sample that includes Protestants, Catholics, Jews, people with no religious affiliation (“<WSD>Nones</WSD>”), and people from other religions (“Others”). ... Are Protestants significantly more supportive than Catholics or Jews? How do people with no religious affiliation compare to other people? 
Meaning of the word marked with <WSD> tags:  Those without any religious affiliation: atheists and others outside any organized religion.