@igm,
Quote:I agree that there are many and varied additional factors. I believe what I meant was that this is one ingredient that seems to set atheists apart from theists in general. The whole observation is just a general one
One of the factors is average IQ between the two groups.
http://en.wikipedia.org/wiki/Religiosity_and_intelligence
Studies comparing religious belief and I.QIn 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 white 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. [4] "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.[5]
The relationship between countries' belief in a god and average Intelligence Quotient, measured by Lynn, Harvey & Nyborg.[6]Nyborg also co-authored a study with Richard Lynn, emeritus professor of psychology at the University of Ulster, which compared religious belief and average national IQs in 137 countries. [6] The study analysed the issue from several viewpoints. Firstly, using data from a U.S. study of 6,825 adolescents, the authors found that atheists scored 6 g-IQ points higher than those adhering to a religion.
Secondly, the authors investigated the link between religiosity and intelligence on a country level. Among the sample of 137 countries, only 23 (17%) had more than 20% of atheists, which constituted “virtually all... higher IQ countries.” The authors reported a correlation of 0.60 between atheism rates and level of intelligence, which is “highly statistically significant.” This portion of the study uses the same data set as Lynn's work IQ and the Wealth of Nations.
Commenting on the study in The Daily Telegraph, Lynn said "Why should fewer academics believe in God than the general population? I believe it is simply a matter of the IQ. Academics have higher IQs than the general population. Several Gallup poll studies of the general population have shown that those with higher IQs tend not to believe in God." [7][8]