Is there a correlation between atheism and intelligence?

[zanOTK]

I don't think so. You're probably more likely to find intelligent individuals within minority religions, such as Buddhism or the Baha'i Faith, than you are Christianity or Islam. Why? Simple. In the case of the Baha'i Faith, most people you'll meet (unless they're Persian) are probably converts. Meaning they had to decide for themselves that they believed this rather than the majority religion or another minority, or nothing at all. This requires a certain amount of intelligence in and of itself. I believe the same goes for Buddhism. Unless they're Asian, most Buddhists are probably going to be converts. Meaning they had to think about this. The same applies to atheism. Atheists pretty much always come to their (lack of) belief because they used their own reasoning, rather than just went along with the norm.

It also depends on the religion itself, I think. Some religions actually encourage investigation and continuing education in their adherents. The two that I can think of off the top of my head are, again, the Baha'i Faith and Buddhism. However, I think I remember hearing about another one as well (I'll have to look for it). And of course, atheists are probably going to encourage education in their own children.

You're also more likely to find unintelligent individuals within the majority religion simply because it is the majority. There's more people in it, and so there's a better chance that you're going to find -stupid- people in it.