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Atheists are more intelligent than religious people, finds study

Religious people are, on average, less intelligent than atheists, researchers claim. 

With the number of people with a religious belief on the rise – it’s predicted that people with no faith will make up only 13 per cent of the global population by 2050 – numerous studies have explored the relationship between religious convictions and IQ.

And now, in a new paper published in Frontiers in Psychology, researchers say that diminished intelligence among people of faith could be because they largely rely on intuition.

“It is well established that religiosity correlates inversely with intelligence,” note Richard Daws and Adam Hampshire at Imperial College London.

Surveying more than 63,000 participants online who indicated whether they were atheists, religious or agnostic, each person had to complete a 30-minute set of 12 cognitive tasks that measured planning, reasoning, attention and memory.

Overall, the research found that atheists performed better overall than the religious participants even when demographic factors like age and education were taken into consideration. Agnostics mostly placed between atheists and believers on all tasks.

While strength of religious conviction correlated with poorer cognitive performance, the data did show that there were only few small differences in working memory compared to tasks that required reasoning. 

As such, rather than having poor general intelligence, the researchers say that religious peoples lower IQ test results may be a result of bad performance on tasks only where intuition and logic come into conflict. 

In fact, one of the reasoning tasks which was a difficult version of the Stroop Task known as “colour-word remapping”, was designed to create maximum conflict between an intuitive response and a logical one.

As predicted, this task showed the biggest group differences in keeping with the idea that religious people rely more on their intuition. 

“These findings provide evidence in support of the hypothesis that the religiosity effect relates to conflict [between reasoning and intuition] as opposed to reasoning ability or intelligence more generally,” the researchers concluded.

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