Brought some oil and fire to play with.
In 2008, intelligence researcher Helmuth Nyborg examined whether IQ relates to denomination and income, using representative data from the National Longitudinal Study of Youth, which includes intelligence tests on a representative selection of American youth, where they have also replied to questions about religious belief. His results, published in the scientific journal Intelligence demonstrated that on average, Atheists scored 1.95 IQ points higher than Agnostics, 3.82 points higher than Liberal persuasions, and 5.89 IQ points higher than Dogmatic persuasions. "I'm not saying that believing in God makes you dumber. My hypothesis is that people with a low intelligence are more easily drawn toward religions, which give answers that are certain, while people with a high intelligence are more skeptical," says the professor.