I think this is mostly a function of the subculture to which you belong and, specifically, which things you find interesting, exciting, important, etc. IQ, of course, is a major underlying factor, but it’s not just IQ.
Each subculture also has its own social rituals and implicit communication methods so when you cross over to a different one you are very likely to have conversation difficulties—unless your social skills are highly developed and you have some idea about how that subculture works.
I think this is mostly a function of the subculture to which you belong and, specifically, which things you find interesting, exciting, important, etc. IQ, of course, is a major underlying factor, but it’s not just IQ.
Each subculture also has its own social rituals and implicit communication methods so when you cross over to a different one you are very likely to have conversation difficulties—unless your social skills are highly developed and you have some idea about how that subculture works.
This was my first thought, too. The Singaporean psychology grad student is a member of the same culture as you; the local fashion designer is not.