School shootings are a topic of research in a variety of different disciplines—from psychology, to sociology to criminology, pedagogy, and public health—each with their own set of theories. Many of these theories are logically interconnected, while some differ widely and seem incompatible with each other, leading to divergent results about potential means of prevention. In this innovative work, leading researchers on the topic of school shootings introduce their findings and theoretical concepts in one combined systematic volume. The contributions to this work highlight both the complementary findings from different fields, as well as cases where they diverge or contradict each other. The work is divided into four main sections: an overview of current theoretical approaches and empirical models; application of these theories to international cases, including Columbine (USA), Emsdetten (Germany), and Tuusula (Finland); a critique of the influence of the media, both in the portrayals of past events and its effect on future events; and finally an overview of existing models for prevention and intervention, and measures of their success. The result is a comprehensive source for current research on school shootings, and will provide a direction for future research.

Ten years after the school massacre at Columbine High School in Colorado, school shootings are a new and alarming epidemic. While sociologists have attributed the trigger of violence to peer pressure, such as bullying and social isolation, prominent psychologist Peter Langman, argues here that psychological causes are responsible. Drawing on 20 years of clinical experience, Langman offers surprising reasons for why some teens become violent. Langman divides shooters into three categories, and he discusses the role of personality, trauma, and psychosis among school shooters. From examining the material evidence of notorious school shooters at Columbine and Virginia Tech to addressing the mental states of the violent youths he treats, Langman shows how to identify early signs of homicide-prone youth and what preventive measures educators, parents and communities can take to protect themselves from the tragedy.

This publication focuses on the use of the threat assessment process pioneered by the Secret Service as one component of the Department of Education's efforts to help schools across the nation reduce school violence and create safe climates.

From random security checks at airports to the use of risk assessment in sentencing, actuarial methods are being used more than ever to determine whom law enforcement officials target and punish. And with the exception of racial profiling on our highways and streets, most people favor these methods because they believe they’re a more cost-effective way to fight crime. In Against Prediction, Bernard E. Harcourt challenges this growing reliance on actuarial methods. These prediction tools, he demonstrates, may in fact increase the overall amount of crime in society, depending on the relative responsiveness of the profiled populations to heightened security. They may also aggravate the difficulties that minorities already have obtaining work, education, and a better quality of life—thus perpetuating the pattern of criminal behavior. Ultimately, Harcourt shows how the perceived success of actuarial methods has begun to distort our very conception of just punishment and to obscure alternate visions of social order. In place of the actuarial, he proposes instead a turn to randomization in punishment and policing. The presumption, Harcourt concludes, should be against prediction.

“An urgent read that illuminates real possibility for change.” —John Carreyrou, New York Times bestselling author of Bad Blood For the first time, a story about the specialized teams of forensic psychologists, FBI agents, and other experts who are successfully stopping mass shootings—a hopeful, myth-busting narrative built on new details of infamous attacks, never-before-told accounts from perpetrators and survivors, and real-time immersion in confidential threat cases, casting a whole new light on how to solve an ongoing national crisis. It’s time to go beyond all the thoughts and prayers, misguided blame on mental illness, and dug-in disputes over the Second Amendment. Through meticulous reporting and panoramic storytelling, award-winning journalist Mark Follman chronicles the decades-long search for identifiable profiles of mass shooters and brings readers inside a groundbreaking method for preventing devastating attacks. The emerging field of behavioral threat assessment, with its synergy of mental health and law enforcement expertise, focuses on circumstances and behaviors leading up to planned acts of violence—warning signs that offer a chance for constructive intervention before it’s too late. Beginning with the pioneering study in the late 1970s of “criminally insane” assassins and the stalking behaviors discovered after the murder of John Lennon and the shooting of Ronald Reagan in the early 1980s, Follman traces how the field of behavioral threat assessment first grew out of Secret Service investigations and FBI serial-killer hunting. Soon to be revolutionized after the tragedies at Columbine and Virginia Tech, and expanded further after Sandy Hook and Parkland, the method is used increasingly today to thwart attacks brewing within American communities. As Follman examines threat-assessment work throughout the country, he goes inside the FBI’s elite Behavioral Analysis Unit and immerses in an Oregon school district’s innovative violence-prevention program, the first such comprehensive system to prioritize helping kids and avoid relying on punitive measures. With its focus squarely on progress, the story delves into consequential tragedies and others averted, revealing the dangers of cultural misunderstanding and media sensationalism along the way. Ultimately, Follman shows how the nation could adopt the techniques of behavioral threat assessment more broadly, with powerful potential to save lives. Eight years in the making, Trigger Points illuminates a way forward at a time when the failure to prevent mass shootings has never been more costly—and the prospects for stopping them never more promising.