Yeah, I think so. I mean, I've stuttered for as long as I can remember, and was an introvert as long as I can remember so I dont know for sure. But I do think it has made me more mature, because it makes me aware of invisible barriers in our lives and stuff. I also defend people who stutter who are younger than me, which doesn't add up with being an introvert, but trust me I am one. So I agree with you.