Eden, I looked at the study regarding supernatual reasoning increasing with age.
I wonder, though, if this might be a cohort effect wherein these beliefs are more common among those of an earlier generation?
In that case, it might represent a way of thinking that has since become "modernized," which would explain why younger people were less likely to ascribe supernatual explanations to natural phenomena.
This, in contrast to the idea that age represents longer and thus more mature reasoning.