Final answer:
Psychopathy, narcissism, and Machiavellianism are personality traits that are characterized by a lack of empathy and a tendency to manipulate others. They are part of the 'Dark Triad' in psychology and are contrasted with traits of individuals that have strong superego control, who are more empathetic and altruistic.
Step-by-step explanation:
Individuals exhibiting traits associated with psychopathy, narcissism, and Machiavellianism are often grouped together in what is referred to as the 'Dark Triad' in psychology. These personalities share a lack of empathy and display tendencies to manipulate others for personal gain. The third dimension added by the Eysencks, psychoticism versus superego control, explains that individuals high in psychoticism tend to be cold, antisocial, and hostile, while those with strong superego control are more empathetic and cooperative. The concept of narcissism extends to leadership dynamics, particularly in the charismatic leader-follower context, where the former may use personal charm and persuasion as manipulative tools to achieve their objectives. Furthermore, the philosophical perspective offered by Nietzsche's 'will to power' can be interpreted as validating such behaviors, encouraging individuals to prioritize power over empathy and the well-being of others.