SidneyIsTheKiller posted:

I don't know if I have an "internal monologue" per se, my thoughts tend to be in the form of imagined scenarios and memories.

I've realized a LOT of the time I'm imagining myself at some point in the future explaining my current situation to somebody else; usually it's really vague, but depending on context I could be speaking to someone (sometimes someone I know, but usually just an undefined "somebody") or writing a letter, email, or web post (yes there've been times it's specifically SA). So you could say these types of thoughts function as an internal monologue for me.