1) One who is socially savvy.
2) One who is able to find ways to assess individuals in social situations and find a correct solution to maximize harmonious interactions with different personalities that one may encounter.
Guy: David really worked the room last night.
Girl: Yeah, he must be a Personalyst.
Girl: That Personalyst really commanded the crowd!
Guy: You know he did more than just COMMAND the crowd. It was like he knew EXACTLY how to captivate our attention!
Girl: Actually....that kinda makes me want to get to know him better...*smile*