A narcissistic parent is a parent affected by narcissism or narcissistic personality disorder. Individuals who score high on narcissism display grandiosity, entitlement, dominance, and superiority. Yzma shares many of Kuzco's negative traits including arrogance, unreliability and narcissism. In psychology, the dark triad refers to the personality traits of narcissism, Machiavellianism, and psychopathy. Vulnerable narcissism, characterized by the personality traits of defensiveness and hypersensitivity. It is one of the dark triad traits, along with narcissism and psychopathy. He will be expansive and will display symptoms of narcissism, perfectionism, or vindictiveness. Harding believes Eve's narcissism and obsession with herself constitutes idolatry. In his article, "malignant narcissism" and psychopathy are employed interchangeably. Vaknin has a prolific online presence, writing on narcissism and psychopathy. Aggression is believed to moderate the relationship between narcissism and counterproductive work behaviors. Self-esteem works as a mediator between narcissism and psychological health. Erotomania may also be linked to unsatiated urges dealing with homosexuality or narcissism. The term idealization first appeared in connection with Freud's definition of narcissism. Individuals high in narcissism have fragile self-esteem and are easily threatened.