Ironically, both psychopaths and Tibetan monks detect deep emotions that are invisible to others. Psychopaths are much better at recognizing "those telltale signs in the gait of traumatized assault victims," notes The Wisdom of Psychopaths author, Kevin Dutton.
Compassion, like all emotions, is a feeling state that serves as an engine for action. Once we feel an emotion, it increases the likelihood that we'll engage in certain behaviors.