1). Narcissism - seen in infants with their libido invested on their own ego.
2. Love - when people invest their libido on an object rather than themselves.
3.) Sadism - inflicting pain or humiliation on other person.
4.) Masochism - experiencing pleasure from suffering pain or humiliation.
Aggression - main aim is self-destruction. present in all of us. forms: teasing, gossip, sarcasm, humiliation, humor, and enjoyment from people's suffering. Return organisms into the ultimate inorganic condition that is death.