Personality is the combination of thoughts, emotions and behaviors that makes everyone unique. It's the way people view, understand and relate to the outside world, as well as how they see themselves. Personality forms during childhood, shaped through an interaction of these factors:
Personality disorders are thought to be caused by a combination of these genetic and environmental influences. Some people may have genes that make them vulnerable to developing antisocial personality disorder — and life situations may trigger its development.
There may be a link between an early lack of empathy — understanding the perspectives and problems of others, including other children — and later onset of antisocial personality disorder. Identifying these personality problems early may help improve long-term outcomes.