I wonder if there are any notable differences between the two demographics. For example, I take a while to fall asleep because I can't not have a conversation

I wonder if there are any notable differences between the two demographics. For example, I take a while to fall asleep because I can't not have a conversation with myself. Do people without an internal dialog tend to fall asleep faster? Does the monolog make you more extroverted because you tend to recite statements in your head and therefor have more confidence? Or does it make you more introverted because you tend to question yourself more before speaking? Does the monolog impact the kinds of jobs or interests you're more likely to persue? Are some subjects easier to understand with or without it? Just how much are personalities impacted by it? Great, now I'll be up all night thinking about this.