A week ago I interviewed cogntive psychologist Justin L. Barrett. Dr. Barrett studies religion as a natural phenomenon, and I asked about the nature of individuals who are atheists. He responded:
As self-proclaimed atheist Jesse Bering has observed it can be very hard to identify true atheists. He even suspects that they comprise a very tiny number of people. By true atheists, I mean people that consistently hold no belief (cognitive commitment that motivates behavior) in superhuman agency. Lots of people say they don't believe in superhuman agency (including gods and ghosts) but will still modify their behaviors around cemeteries on spooky nights ("just in case").
I'm not scared of cemeteries. When I was in high school a friend of mine, a fellow unbeliever, would always ask that we meet in the cemetery which lay between our houses. I would wait behind a gravestone (usually we'd meet at dusk), and ...