Narcissism is characterized by grandiosity, pride, egotism, and a lack of empathy.
Narcissus was a hunter in Greek mythology, son of the river god Cephissus and the nymph Liriope. He was a very beautiful young man, and many fell in love with him. He was lead to a pool where he saw his own reflection in the water and fell in love with his own reflection.
Machiavellianism is characterized by manipulation and exploitation of others, an absence of morality, and a higher level of self interest.
Named after the political philosophy espoused by Niccolò Machiavelli, people who score high on this trait are cynical (in an amoral self-interest sense, not in a doubtful or skeptical sense), unprincipled, cold, believe in interpersonal manipulation as the key for life success, and behave accordingly.
Psychopathy is characterized by continuous antisocial behavior, impulsivity, selfishness, callous and unemotional traits and remorselessness. The psychopath is keenly aware that what he or she is doing is wrong, but does not care.
Answer the following questions to the best of your knowledge.