Back to Myers-Briggs again. Like all tools and frames of reference, it has its limits. But the light it can shed can be very illumination. Check out this chart from an old volume by M. Robert Mulholland, Jr. I was particularly intrigued at the differences between the classic introvert and the extrovert. Check out the “overdevelopment” and “underdevelopment” for each type. The explanation on the pages following this chart in the book is really helpful.
Then check out this nuanced comparison. Jung noted that there are no “pure” types. We are all somewhere on the continuum, and a few of us are nearly bang in the middle.
And this humorous post – prayers by Myers-Briggs types.
And finally, a break-down by population.