This is not a scientific study. I'm just writing about classroom activities from an introvert's perspective.
Although many teachers noted my "lack of participation," there was one teacher who tried to help. He caught me one day after class.
"Why won't you talk?" he asked. I didn't know. I couldn't answer. There is no answer. It just doesn't come naturally.
"How about if you start out with saying just one thing a week?" I agreed, although I was skeptical that it would work.