Abnormal Psychology Chapter 9, Core
Concepts, Butcher, Mineka, Hooley.
Personality Disorders - A person's enduring pattern of behavior must be pervasive and inflexible, as well
as stable and of long duration. It must also cause either clinically significant distress or impairment in
functioning and be manifested in at least two of the following areas: cognition, affectivity, interpersonal
functioning, or impulse control.
Cluster A Personality Disorders - People with these disorders often seem odd or eccentric, with unusual
behavior ranging from distrust and suspiciousness to social detachment. Includes paranoid, schizoid, and
schizotypal personality disorders.
Cluster B Personality Disorders - Individuals with these disorders share a tendency to be dramatic,
emotional, and erratic. Includes the following: Histrionic Personality Disorder,Narcissistic Personality
Disorder, Antisocial Personality Disorder, Borderline Personality Disorder
Cluster C Personality Disorders - Individuals with these disorders often show anxiety and fearfulness.
Includes the following: Avoidant Personality Disorder, Dependent Personality Disorder,Obsessive-
Compulsive Personality Disorder.
Paranoid Personality Disorder - A pervasive suspiciousness and distrust of others, leading to numerous
interpersonal difficulties.
Schizoid Personality Disorder - Individuals with this disorder display evidence of a pervasive pattern of
detachment from social relationships and a restricted range of expression of emotions in interpersonal
settings.
Schizotypal Personality Disorder - A pervasive pattern of social and interpersonal deficits marked by
acute discomfort with, and reduced capacity for, close relationships as well as by cognitive or perceptual
distortions and behavioral eccentricities.
