Yes, but I think IQ and language also has a lot to do with it. For instance the many claims of Asians saying they did not have an internal monologue until they learned English.
The smarter ones probably do have a distinct different way of reasoning, but I couldn't say how.
Do you think it is important to have an internal monologue?
Absolutely. If you don’t, are you actually conscious? I encounter NPCs all the time, if you don’t have an internal monologue you can’t plan for the future, because you’re unable to think at a high level. It takes a special ability to run through possible scenarios when problem solving. If you can’t imagine language, how can you imagine cause and effect and visualize the intended outcome?
It is just... If you have two or more voices inside your head, you are considered insane, and rightfully so.
But for some reason, having one voice inside your head is considered optimal, the pinnacle of sanity.
It really doesn't make sense to me.