Excerpt from: http://machineslikeus.com/news/origin-religion-7-messiahs-and-prophets-schizotypal-personalities
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What you find with schizotypals is what is called metamagical thinking, a very strong interest in new-age beliefs, science fiction, fantasy, religion, but in a very concrete, literal form, a very fundamentalist style. Somebody walking on water is not a metaphor. Somebody rising from the dead is not a metaphor; this is reported, literal fact.
Now we have to ask our evolutionary question: "Who are the schizotypals throughout 99% of human history?" And in the 1930s, decades before the word "schizotypal" even existed, anthropologists already had the answer.
It's the shamans. It's the medicine men. It's the medicine women. It's the witch doctors.
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It's the shamans who are moving separate from everyone else, living alone, who talk with the dead, who speak in tongues, who go out with the full moon and turn into a hyena overnight, and that sort of stuff. It's the shamans who have all this metamagical thinking. When you look at traditional human society, they all have shamans. What's very clear, though, is they all have a limit on the number of shamans. That is this classic sort of balanced selection of evolution. There is a need for this subtype -- but not too many.
The critical thing with schizotypal shamanism is, it is not uncontrolled the way it is in the schizophrenic. This is not somebody babbling in tongues all the time in the middle of the hunt. This is someone babbling during the right ceremony. This is not somebody hearing voices all the time, this is somebody hearing voices only at the right point. It's a milder, more controlled version.
Shamans are not evolutionarily unfit. Shamans are not leaving fewer copies of their genes. These are some of the most powerful, honored members of society. This is where the selection is coming from. What this shamanistic theory says is, it's not schizophrenia that's evolved, it's schizotypal shamanism that's evolved. In order to have a couple of shamans on hand in your group, you're willing to put up with the occasional third cousin who's schizophrenic. That's the argument; and it's a very convincing one.
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Western religions, all the leading religions, have this schizotypalism shot through them from top to bottom. It's that same exact principle: it's great having one of these guys, but we sure wouldn't want to have three of them in our tribe.
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"[T]here are multiple deities", "[T]here is but one god and he is Allah", "I am who I am," any version of this -- is an awful lot like schizotypalism. Who is it that invented the notion that virgins can give birth? Who is it who first came in with the extremely psychiatrically suspect report about hearing a voice in a burning bush? In most of the cases we don't know much about the psychiatric status of these folks. In the more recent historical cases, we certainly do, and schizotypalism is at the heart of non-Western and Westernized large theological systems."
