I've read similar articles, there does seem to be a correlation between intelligence and religious belief
"A survey of Royal Society fellows found that only 3.3 per cent believed in God"
"A separate poll in the 90s found only 7 per cent of members of the American National Academy of Sciences believed in God"
Imo most people who believe in there own brand of religion dont actually belief in the tenets of there religion, in the 2011 census 59.3 down from 71.7% in 2001 identified them selves as christian.
From the 100% of only 32 per cent of the census “Christians” believe in the resurrection of Jesus. Only 35 per cent could pick out the correct answer to “What is the first book of the New Testament?” when given a 4-way choice of Matthew, Genesis, Acts, Psalms. When asked why they had ticked the Christian box, only 28 per cent of those who did so said it was because they believe the teachings of Christianity. The most popular answer to that question was, “I like to think of myself as a good person.” What? You ticked the Christian box because you like to think of yourself as a good person? Are you serious? Do you think atheists, Muslims, Jews, Hindus, Buddhists don’t think of themselves as good people?