[QwOpHGyZ]

You will need to treat her/him a lot, in a daily basis in order to see how attached is to his 'self' how he reacts to minor things as with hate or greed, how he deals during difficult times...

There is something that maybe do not has any scientific base but... the way one smiles when a smile has to arise -and many minor gestures around that smile- can tell a lot about a woman or man that has quenched mental suffering.

Things like that.