Answer:
Emulate who they are around them. Pick up their behaviours and use it against it them....reverse psychology pretty much.
~ I wouldn't agree with the above. Research shows that there isn't an effective treatment to any form of psychopathy (other then dissocial, which would involve simply removing the individual from the environment they commit psychopathic acts in). Research further shows that Psycho/Sociopaths that partake in treatment become "better" psycho/sociopaths.