Here's a chart I adjusted to explain my Atheism to my friends, it is only based on my own bias, though I've had absolutely nobody question it's validity. From my experience in having had many devout friends and clients, it stands fairly well correct, yet I've been willing to alter it if anybody shows me evidence from any study to show otherwise. Nobody has, so it stands uncorrected and likely correct! Though it is also a great stir for use against those who attack my atheism. It defeated a couple so far without any further argument from them. Especially when I quote my measured IQ and point out where that is on the chart.