Psychometer

[Vania]

An emotional-intelligence based instrument of the brain, used in social settings, or other, to detect and pre-determine potentially psychotic, selfish, arrogant, [spoilt], obsessive, stalker, head-screwing type of behaviour in [prospective] [hookups], love interests, employers, friends etc..
Primarily used to avoid making the mistake of any future interaction with that person, whether it be physical, emotional, or other!