Brain science is still a new field and discoveries continue, but we now know much more about how the ways we’re physically wired influence our place on the introvert/extrovert continuum. Maybe you’ve heard that personal preferences, how you socialize, or shyness determines introversion. None of these are true. It’s how you respond to external stimulation that makes you an introvert or extrovert. (If that sounds strange, I’ll soon explain.) Your neurotransmitters, nervous system, and brain pathways