Program Description: This webinar begins with a brief review of the justifications cited by perpetrators, as well as a consideration of underlying psychological dynamics. Next, three psychological types of mass attackers are presented to demonstrate the intersection of their internal dynamics and life experiences. Following this, four additional cases will be reviewed to highlight the variability in functioning among perpetrators and the need to look behind superficial accomplishments to detect risk factors for violence.
Client Base: Adult/Child
Content Area: Assessment/Intervention
Number of hours: 3
Program Learning Objectives:
At the conclusion of this program, attendees will be able to:
1. identify three psychological categories of mass attackers.
2. explain the role of identity issues and aspirations in mass attackers.
3. discuss the intersection of psychological dynamics and life experiences as risk factors for violence.
Peter Langman, PhD
Educational Background (degrees, years and institutions):
B.A., 1984, Clark University
M.A., 1989, Lesley University
Ph.D., 2000, Lehigh University
Please list your professional licenses or certifications.
Psychology license, Pennsylvania
Current Position(s), Title(s), Employer(s), Number of years in position(s)
Langman Psychological Associates, LLC, 12 years
Researcher, National Threat Assessment Center, United States Secret Service, 4 years
Director of Research and School Safety Training, Drift Net Securities, 2 years
List experience and workshop presentations or papers to support competence in the subject.
“The Minds, Lives, and Warning Signs of Mass Attackers,” Prevention and Intervention: Pathways to Reducing Acts of Mass Violence, Active Assailant Interdisciplinary Work Group, Annapolis, MD, October 14, 2022.
“Beyond Warning Signs,” Academia Security Virtual Symposium,” University of North Carolina and FBI, February 9, 2022.
“The Motivations and Justifications of Mass Attackers,” (virtual), Northeastern Chapter of ATAP, November 3, 2021.
“The Motivations and Justifications of Mass Attackers,” NABITA, September 22, 2021.
“Pathways to Violence: Three Types of Targeted Attackers,” Virginia Department of Criminal Jus-tice Services, (webinar), November 5, 2020.
“Reasons Behind Radicalization: The Psychology of Homegrown Violent Extremists,” National Behavioral Intervention Team Association Annual Convention, Coconut Point, Florida, November 12, 2019.
“The Psychology of Homegrown Violent Extremists,” Academy of Psychologists Engaged in Pri-vate Practice,” Bethlehem, PA, September 27, 2019.
“Inside the Minds of Mass Killers,” FBI Headquarters, Washington, DC, May 6, 2019.
“Desperate Identities: A Bio-Psycho-Social Analysis of Perpetrators of Mass Violence,” National Science Foundation, George Mason University, Arlington, VA, April 11, 2019.
Ethical Considerations: Are you presenting information about individuals seen in your practice, participants in your research or an organization? No
Will you be discussing proprietary test materials or information? No
Diversity Considerations: How will you address aspects of diversity and inclusion in your presentation?
Perpetrators presented represent diversity in terms of gender, race, ethnicity, and religion.
Bigotry as motivation/justification for violence is discussed.
Presenter agrees to disclose to the audience any real or apparent conflict of interest related to the content of the presentation
Disclaimer: District of Colombia Psychological Association is approved by the American Psychological Association to sponsor continuing education for psychologists. DCPA maintains responsibility for this program and its content. .