True introvert

It’s more about where you get your energy from. You can be talkative, but if you need alone time to recharge you are likely an introvert

It’s comfort..
I bet your loud around your immediate family?..

Introvert doesn’t necessarily mean you’re never talkative, it means that social activity drains your energy and you need alone time to recharge. So yes, you can really be an introvert even if you’re talkative around people you know.

I do think that a true introvert can have variations.
I do better with strangers than people I know. Unless that person, I feel safe around, then I sometimes don't shut up for periods of time.

Nice idea. Wrong species. Humans are adaptable. A mentally healthy well balanced person wouldn't want to be stuck in the role of being an introvert or an extrovert all the time.

Strange people with big secrets or insecure people craving attention don't carry higher IQs, though some may be the victims of a bully, and others might be the victims of themselves.

Truth is, you really never truly know other people. Though I've been told that under some conditions you can, it fails to cover the fact that people can change.

Introversion is linked (based on my own experiences and understanding) to social anxiety and chronic lack of self-confidence, self-esteem and self-worth. It can also be a 'protection' barrier for the biggest one of all - fear of rejection either socially or romantically/sexually.

I hate being in places where there are big crowds of people which is a reason I don't get into sports where large crowds of fans are commonplace. I also avoid shopping centres, and any urban setting with lots of people.

Perhaps.

Perhaps you are just careful or wary of those new to you.

Introvert is not shyness, just as extrovert is not confidence. They refer to where you get your energy from, introverts take time alone to recharge, extroverts take energy from group activity.

I would say no, just avoiding embarrassing situations around people you don't know and don't know you

Look up "ambivert".

That's me