I don't generally think of Fast Company as the go-to source of cutting-edge psychology research. However, this piece caught my eye.
Readers of this blog will be most interested in #6: "introversion and extroversion come from different wiring in the brain." The article discusses neurological pathways in the dopamine system, and the implications for processing stimuli in introverts vs. extroverts. Interesting stuff.
I enjoyed the other nine surprising facts, as well: creativity, multitasking, napping, meditation, exercise, etc. But they don't relate directly to personality testing or behavioral types, so I won't discuss.