Personality disorders (PDs) are a group of mental health conditions characterized by enduring patterns of behavior, cognition, and inner experience that deviate from cultural expectations.

They refer to two distinct personality disorders: narcissistic personality disorder (NPD) and antisocial personality disorder (ASPD). Both conditions can cause a person to be manipulative ...

To learn more, see Personality and Life Outcomes and Personality Disorders. Where Does Personality Come From? Why individuals develop the personalities they do and how much someone’s personality ...

Results: There were few studies with original data on personality disorder and ethnicity ... large representative sample of the US population Face-to-face survey of 43093 participants by National ...