A study published in the July issue of Cognitive Science determined that children who are not exposed to religious stories are better able to tell that characters in "fantastical stories" are fictional -- whereas children raised in a religious environment even "approach unfamiliar, fantastical stories flexibly."
MORE: http://www.rawstory.com/rs/2014/07/18/researchers-children-exposed-to-religion-have-difficulty-distinguishing-fact-from-fiction/