So I think I deliberately trained myself out of having an internal monologue.<p>I don't have an internal monologue most of the time, but I can definitely turn one on and off when I choose to. I also have a distinct memory related to this. I think I was a teenager at the time, and I don't remember what I was thinking about, but my train of thought got stuck because I couldn't remember the right word for a specific concept. Then I realized--wait a minute, I know what I'm trying to think about even if I don't have the word for it, which means I don't need to use words to think about things! So I stopped using words to think about things.