^I would guess (though I have no idea if this is actually true), that the exact opposite would be the norm. Kids are more prone to belief in fantasy and make believe than adults, and have less-developed critical thinking skills. Usually people don't question the beliefs they were raised with until at least their teenage years. I think for people of faith who have these experiences, the experience confirms their beliefs, whatever their age. I was skeptical from a very young age, on the other hand. Both my parents were believers, but I was already strongly agnostic by the age of 9 and atheist by 14 or so. I just don't seem to have much going on in the god center of my brain (if I even have one). I didn't have any beliefs to confirm, and was disinclined to attribute any experience to magic when there was likely a perfectly good natural explanation. However, if this had happened to me a few years earlier...when I was 7 and still believed in Santa Claus, maybe it would have had a different effect on me. In a humorous tangent (at least to me): I've never really thought about it before, but I'm pretty sure I started doubting the existence of god before I doubted the existence of Santa!
At 12, although I doubt I had the same comprehension of the brief and fleeting nature of life, I was old enough to understand the permanence of death, and I was very afraid of dying, partly because I didn't think an afterlife was very likely.