3e had a mix of RAW social mechanics working on PCs just like monsters and working on NPCs only.
"A successful Bluff check indicates that
the target reacts as you wish, at least for a short time (usually 1 round or less) or believes something that you want it to believe. Bluff, however, is not a
suggestion spell."
"Diplomacy (Cha)
Check
You can change the attitudes of others (
nonplayer characters) with a successful Diplomacy check"
"Intimidate (Cha)
Check
You can change another’s behavior with a successful check."