I remember being pretty outgoing as a young child. I would go up to random strangers and ask them random questions, during family events, I would run around between family members constantly, interacting with them, and then running to someone else to interact with them. But now, I am very much an introvert, I live inside my own head, only speaking when I feel the need to or if someone speaks to me. Is the preference for introversion/extroversion not entirely developed when still a child? Or is it possible that I'm truly an extrovert who's become extremely shy for some reason?