Violence is the use of physical force to cause harm to people, animals, or property, such as pain, injury, death, damage, or destruction. Some definitions are somewhat broader, such as the World Health Organization's definition of violence as "the intentional use of physical force or power, threatened or actual, against oneself, another person, or against a group or community, which either results in or has a high likelihood of resulting in injury, death, psychological harm, maldevelopment, or deprivation."
Forensic psychology is the practice of psychology applied to the law. Forensic psychology is the application of scientific knowledge and methods to help answer legal questions arising in criminal, civil, contractual, or other judicial proceedings. Forensic psychology includes research on various psychology-law topics, such as jury selection, reducing systemic racism in criminal law, eyewitness testimony, evaluating competency to stand trial, or assessing military veterans for service-connected disability compensation. The American Psychological Association's Specialty Guidelines for Forensic Psychologists reference several psychology subdisciplines, such as social, clinical, experimental, counseling, and neuropsychology.
Together, legal psychology and forensic psychology form the field more generally recognized as "psychology and law". Following earlier efforts by psychologists to address legal issues, psychology and law became a field of study in the 1960s as part of an effort to enhance justice, though that originating concern has lessened over time. The multidisciplinary American Psychological Association's Division 41, the American Psychology–Law Society, is active with the goal of promoting the contributions of psychology to the understanding of law and legal systems through research, as well as providing education to psychologists in legal issues and providing education to legal personnel on psychological issues. Further, its mandate is to inform the psychological and legal communities and the public at large of current research, educational, and service in the area of psychology and law. There are similar societies in Britain and Europe.
Forensic psychiatry is a subspeciality of psychiatry and is related to criminology. It encompasses the interface between law and psychiatry. According to the American Academy of Psychiatry and the Law, it is defined as "a subspecialty of psychiatry in which scientific and clinical expertise is applied in legal contexts involving civil, criminal, correctional, regulatory, or legislative matters, and in specialized clinical consultations in areas such as risk assessment or employment." A forensic psychiatrist provides services – such as determination of competency to stand trial – to a court of law to facilitate the adjudicative process and provide treatment, such as medications and psychotherapy, to criminals.
Morton Deutsch was an American social psychologist and researcher in conflict resolution. Deutsch was one of the founding fathers of the field of conflict resolution. A Review of General Psychology survey, published in 2002, ranked Deutsch as the 63rd most cited psychologist of the 20th century.
Gun violence is a term of political, economic and sociological interest referring to the tens of thousands of annual firearms-related deaths and injuries occurring in the United States. In 2022, up to 100 daily fatalities and hundreds of daily injuries were attributable to gun violence in the United States. In 2018, the most recent year for which data are available, the Centers for Disease Control and Prevention's (CDC) National Center for Health Statistics reported 38,390 deaths by firearm, of which 24,432 were suicides. The national rate of firearm deaths rose from 10.3 people for every 100,000 in 1999 to 11.9 people per 100,000 in 2018, equating to over 109 daily deaths. In 2010, there were 19,392 firearm-related suicides, and 11,078 firearm-related homicides in the U.S. In 2010, 358 murders were reported involving a rifle while 6,009 were reported involving a handgun; another 1,939 were reported with an unspecified type of firearm. In 2011, a total of 478,400 fatal and nonfatal violent crimes were committed with a firearm.
Ellen S. Berscheid is an American social psychologist who is currently a Regents professor at the University of Minnesota, where she earlier had earned her PhD in 1965. Berscheid conducted research on interpersonal relationships, emotions and moods, and social cognition. Berscheid wrote books, articles and other publications to contribute to the field of Social Psychology. She was involved in controversy surrounding the funding for her research on why people fall in love. In addition to her position at the University of Minnesota as a Psychology and Business professor; she has also held a position at Pillsbury. She has received awards for her contributions to social psychology, including The Presidential Citation and the Distinguished Scientific Contribution Award from the American Psychological Association.
Ellen Louise Pence was an American scholar and a social activist. She co-founded the Duluth Domestic Abuse Intervention Project, an inter-agency collaboration model used in all 50 states in the U.S. and over 17 countries. A leader in both the battered women's movement and the emerging field of institutional ethnography, she was the recipient of numerous awards including the Society for the Study of Social Problems Dorothy E. Smith Scholar Activist Award (2008) for significant contributions in a career of activist research.
Ronald Roesch is a professor of psychology at Simon Fraser University in British Columbia, Canada.
Mary P. Koss is an American Regents' Professor at the University of Arizona, Mel and Enid Zuckerman College of Public Health in Tucson, Arizona. Her best known works have been in the areas of gender-based violence and restorative justice.
Karen Franklin is an American forensic psychologist. For her doctoral dissertation, she conducted research on anti-gay violence. She has also published commentaries about sex crimes, primarily expressing her opposition to the use of the hebephilia and other diagnoses in sexually violent predator regulations. She received the 2012 Distinguished Scientific Achievement Award in Psychology and the Monette-Horwitz Trust Award in 2001.
Mass shootings are incidents involving multiple victims of firearm related violence. Definitions vary, with no single, broadly accepted definition. One definition is an act of public firearm violence—excluding gang killings, domestic violence, or terrorist acts sponsored by an organization—in which a shooter kills at least four victims. Using this definition, a 2016 study found that nearly one-third of the world's public mass shootings between 1966 and 2012 occurred in the United States, In 2017 The New York Times recorded the same total of mass shootings for that span of years. A 2023 report published in JAMA covering 2014 to 2022, found there had been 4,011 mass shootings in the US, most frequent around the southeastern U.S. and Illinois. This was true for mass shootings that were crime-violence, social-violence, and domestic violence-related. The highest rate was found in the District of Columbia, followed by Louisiana and Illinois.
Elizabeth Thompson Gershoff is Professor of Human Development and Family Sciences at the University of Texas at Austin. She is known for her research on the impact of corporal punishment in the home and at school on children and their mental health.
Rebecca Campbell is a professor of psychology at Michigan State University. She is known for her research pertaining to sexual assault and violence against women and children and the effects of treatment by law enforcement and medical staff on victims' psychological and physiological well-being. Campbell has been involved in criminal justice research on the investigation of Detroit's untested rape kits, wherein DNA evidence obtained in thousands of rape kits was left in storage and not analyzed. She has received numerous awards for her work including the Society for the Psychological Study of Social Issues Louise Kidder Early Career Award (2000), the American Psychological Association (APA) Early Career Award for Distinguished Contributions to Psychology in the Public Interest (2008), the APA Division 27 Council on Educational Program's Excellent Educator Award (2015), and the U.S. Department of Justice Vision 21 Crime Victims Research Award (2015).
Ann S. Masten is a professor at the Institute of Child Development at the University of Minnesota known for her research on the development of resilience and for advancing theory on the positive outcomes of children and families facing adversity. Masten received the American Psychological Association Urie Bronfenbrenner Award for Lifetime Contributions to the Service of Science and Society in 2014. She has served as president of the Society for Research in Child Development and of Division 7 (Developmental) of the American Psychological Association.
Cynthia Ann Gómez is an American psychologist who works in public health. She is known for her work in the field of HIV/AIDS prevention, health care access and health equity for minority individuals and committees. Likewise, one of her most major accomplishments was being the founding director of the Health Equity Institute at San Francisco State University. She has been a teacher and researcher, as well as a leader in both teaching and governmental positions.
James Densley is a British-American sociologist and Professor of Criminal Justice at Metropolitan State University. He is best known as co-founder of The Violence Project and as co-author of the bestselling book, The Violence Project: How To Stop a Mass Shooting Epidemic. Densley has also published extensively on street gang issues and has been described as "among the most accomplished rising leaders of modern gang research in criminology." He was one of the top 250 most cited criminologists in the world in 2019.
Lisa A. Goodman is an American counseling psychologist known for her research on domestic violence and violence against women. She is Professor of Counseling Psychology at the Lynch School of Education at Boston College. Goodman is a Fellow of the American Psychological Association, Division of Counseling Psychology.
Jennifer Woolard is a developmental psychologist known for work within the juvenile justice system. Woolard is professor of psychology and adjunct professor of law at Georgetown University. She is involved in the Youth In Custody Practice Model Initiative at the Center for Juvenile Justice Reform at Georgetown University's McCourt School of Public Policy, which seeks to adopt evidence-based developmentally-appropriate practices within juvenile correctional institutions.
Aalayah Eastmond is an American activist and advocate for gun violence prevention, social justice, and racial equality. After surviving the Stoneman Douglas High School shooting, Eastmond began her activism during the 2018 United States gun violence protests. She has testified multiple times to the U.S. Congress. Eastmond is an executive council member of Team Enough, a youth-led gun violence prevention organization which is part of the Brady Campaign. Eastmond co-founded Concerned Citizens of DC in the wake of the murder of George Floyd to organize protests supporting social justice issues in Washington, D.C. She supports Black Lives Matter and protests against police brutality.
