Related Experiment Video
Updated: Sep 30, 2026

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
Published on: July 4, 2013
Characteristics of assaultive patients with schizophrenia versus personality disorder: six year analysis of the
Raymond B Flannery1, Stephen Rachlin, Andrew P Walker
1The Massachusetts Department of Mental Health, Boston 02114, USA.
Abstract:
Literature reviews of individual assaultive patients, repetitively violent patients, and restrained assaultive patients document that persons diagnosed with schizophrenia or personality disorder are at the highest risk to become assaultive. While there has been some initial research of possible predictor variables across diagnostic groups, this six-year retrospective study is the first to compare only persons with schizophrenia or personality disorder on basic demographic and the selected clinical variables of history of violence, personal victimization, and substance use disorder. In this study, the variance suggested that persons with schizophrenia and personality disorder were both likely to be assaultive. Assaults by persons with schizophrenia were somewhat proportional to their presence in the population studied. However, personality disordered patients represented a disproportional increase from the population studied. Younger females with a diagnosis of personality disorder and with histories of violence toward others and personal victimization appeared at increased risk to be assaultive and to require restraints. The findings and their implications for safety and clinical care are discussed.
Related Concept Videos
Antisocial Personality Disorder
Behavioral Characteristics and...
Personality Disorders: Paranoid and Schizoid
Paranoid Personality Disorder
Paranoid personality disorder is...
Positive Symptoms of Schizophrenia: Hallucinations and Delusions
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes loosely...
Personality Disorders: Schizotypal and Histrionic
Schizotypal Personality Disorder: Eccentric Behavior and Social Withdrawal
Schizotypal personality disorder is marked by odd or eccentric...
Personality Disorders: Narcissistic and Avoidant
Characteristics of Narcissistic Personality Disorder
Narcissistic individuals exhibit an inflated sense of self-importance and an excessive need for admiration. They are often...
Psychological and Sociocultural Causes of Schizophrenia
