A new study suggests that religious people are less intelligent than non-believers.
A piece of University of Rochester analysis, led by Professor Miron Zuckerman, found "a reliable negative relation between intelligence and religiosity" in 53 out of 63 studies.
According to the study entitled, 'The Relation Between Intelligence and Religiosity: A Meta-Analysis and Some Proposed Explanations', even during early years the more intelligent a child is the more likely it would be to turn away from religion, the Independent reported.
In old age above average intelligence people are less likely to believe, the researchers also found.
One of the studies used in Zuckerman's paper was a life-long analysis of the beliefs of 1,500 gifted children with IQs over 135.
The study began in 1921 and continues today. Even in extreme old age the subjects had much lower levels of religious belief than the average population.
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The review, which is the first systematic meta-analysis of the 63 studies conducted in between 1928 and 2012, showed that of the 63 studies, 53 showed a negative correlation between intelligence and religiosity, while 10 showed a positive one.
The findings are published in Personality and Social Psychology Review.