I agree that a lot of people think "introverted" means "shy" which is not accurate. My understanding has always been that it means whether a person is energized or drained by interactions with other people. This idea that introverts are self-centered while extroverts are more aware of other people has always gotten me mad. When I was applying for jobs a few years back, I noticed that every job description specified an "outgoing" person. Can you imagine an office with nothing but extroverts? Nothing would ever get done because they would never stop talking.