The connection between selfishness and introversion or extroversion is not straightforward, and it is not accurate to say that most selfish people are either introverts or extroverts. Selfishness is a personality trait or behavior that can be found in individuals of all personality types, regardless of whether they are introverted or extroverted.
Introversion and extroversion are dimensions of personality that describe how individuals typically respond to social situations and where they draw their energy from. Introverts tend to feel more comfortable and energized in solitary or low-stimulation environments, while extroverts tend to thrive in social settings and gain energy from interactions with others.
Selfishness, on the other hand, is a personality trait associated with a focus on one's own interests and needs to the exclusion or detriment of others. It's more related to the individual's character, values, and upbringing than to their introverted or extroverted nature.
It is essential to remember that personality traits are complex, and human behavior cannot be reduced to a simple binary classification of introvert or extrovert. People can exhibit a range of behaviors and attitudes, including selfishness, regardless of their introverted or extroverted tendencies. Selfishness can manifest differently in different individuals, regardless of their personality type.