Amy’s Personality Disorder... (Gilang Wening Pertiwi) 65 AMY’S PERSONALITY DISORDER IN FLYNN’S GONE GIRL: A PSYCHOLOGICAL APPROACH By: Gilang Wening Pertiwi State University of Yogyakarta gwpertiwi@gmail.com Abstract This research aims to identify the characteristics of antisocial personality disorder found in Amy’s actions and behaviors, and to reveal the cause of her personality disorder. The types of the data are words, phrases, clauses, sentences, and paragraphs taken from the novel which are related to the topic of the novel. The main instrument of this research was the researcher and was supported by the table list that contains the data of the research as the secondary instrument. The source of the data is the novel. There are two results for this research. The first one is that Amy shows six out of seven characteristics of antisocial personality disorder. They are failure to conform social norms, deceitfulness, impulsivity, irritability and aggressiveness, reckless disregard for safety of self and others, and lack of remorse. The second one is that Amy’s personality disorder is caused by her peers, who are her parents and husband. Keywords: personality disorder, antisocial personality disorder, psychological approach. INTRODUCTION In everyday life, humans use many kinds of term to describe how a person behaves. Someone can be referred as kind, easy-going, naughty, diligent, or many more. Those terms are what people called as personality. According to Kasschau (1980: 433), personality is the dynamic organization within an individual of those systems that determine his or her characteristic behavior and thought. Even though humans have certain personality, they are not born with it. Humans have to develop personality since they interact with other people for the first time. In the process of developing personality, it is possible that there are many conditions that affect the development. The condition when individual’s personality deviates from culture’s expectations is called personality disorder. American Psychiatric Association (2000: 630) defines