Hypotheses: More childhood trauma, multiple personality, polytheism vs. Less trauma and multiple personality, reflected in monotheism or atheism.

Is there any relationship between the percentage of a population that has multiple personality and whether it is polytheistic, monotheistic, or atheistic?

Would a culture in which most of the people had multiple personality be more likely to be polytheistic? Would a culture in which only a minority of the people had multiple personality be more likely to be monotheistic? Would the population with the lowest percentage of multiple personality have the highest percentage of atheists?

The historical trend from polytheism to monotheism to atheism is usually attributed to the advance of science. But is it also related to a decrease in childhood trauma, leading to a decrease in multiple personality?

Are novelists, a group that has a high percentage of multiple personality (but usually a normal version), more religious—at least more spiritual, mystical, or magical thinking—than the general population?

Note: Search “varieties of religious experience” (title of the book by William James) for related past posts.