Do they, though? Maybe I participate in conversations differently, but trying to unravel how A interpreted B's comment is not something I would do.
Otherwise I have a broad set of heuristics I apply which I adjust as needed.
I never considered that a tendency to do this might have an impact on introversion/extroversion. Something to mull over, thanks!
I might pick up on something like "A seems to respond to B uniformly negatively" and make a note of that, but remembering one notable thing doesn't require me to "allocate" memory for all of the other non-memorable things. I'm not literally building and labeling a graph, like some commenters are implying. Or if you insist, it's a sparse data structure.