Interestingly, it turns out a large number of people have no inner monologue. [1]
Some studies indicate that it's as low as 30% of people who do (so 70% don't have an inner monologue), while others show the opposite, implying around 75% of people have some amount of inner monologue while 25% do not. It's a difficult subject to test and study since we don't have direct access to people's minds and asking someone what they're thinking about literally forces their thoughts through the filter of language.
Some studies indicate that it's as low as 30% of people who do (so 70% don't have an inner monologue), while others show the opposite, implying around 75% of people have some amount of inner monologue while 25% do not. It's a difficult subject to test and study since we don't have direct access to people's minds and asking someone what they're thinking about literally forces their thoughts through the filter of language.
[1] https://science.howstuffworks.com/life/inside-the-mind/human...