The objective of this study is to understand how personality disorders affect the way human behave and their effects towards human social relationship. The focus is female prisoners in Peninsular Malaysia. Personality and human behavior is closely related to one another. Personality creates how a person behaves and directly affects the engineering of social relationship. Human criminal behavior often raises a big question to the reason lies behind the behavior. One of the most commonly discussed answer for the criminal behavior is personality disorder which is a type of mental health problems. Antisocial personality disorder is a subtype of personality disorder widely related to many criminal deeds. In many countries, studies regarding personality disorders among offenders population are very common and the findings evidenced that personality disorders are strongly related to the criminal behavior. The methodology of this study is designed based on cross-sectional study. The finding shows that antisocial personality disorder as the focus of this study can be regarded as the engine of human criminal behavior. Antisocial personality disorder simply defined as act of violation towards social norms and the law which results in the occurrence of crime and disrupts the normal engine of the society.
