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After the school shooting in Parkland, Florida, in 2018, psychology professor  and his colleagues reviewed research to see what could be learned from what they refer to as the 鈥�.鈥� In the wake of the May 24, 2022, massacre at Robb Elementary School in Uvalde, Texas, Boxer has revisited that research anew鈥攁nd other research conducted since then鈥攆or insights on what can be done to reduce the risk of school shootings in the future. Here, he offers five policy changes鈥攂ased on his findings鈥攖hat can be implemented to achieve that end.

1. Dramatically Limit Access to Guns

Gun regulation matters.

When my colleagues and I looked at gun regulations on a state-by-state basis, we found that .

This relation held even after we took demographic, economic, and educational factors into account. Other researchers have found that 鈥減ermissive firearm laws and higher rates of gun ownership鈥� were linked with .

What these results essentially mean is that in states where it is more difficult to acquire a gun, fewer people are killed by guns. Examples of these restrictions are raising the age for legal purchase, imposing lengthy waiting periods before access, requiring meaningful background checks, and more. These and similar measures鈥攆or example, eliminating access for individuals at a high risk of committing violence, such as the perpetrators of domestic violence鈥攁ll move toward making it significantly harder to access guns, which would reduce gun violence substantially.

Placing meaningful restrictions or outright bans on firearm equipment associated with greater lethality, such as assault-style rifles and high-capacity magazines, should also lower the number of people being killed by firearms. Research  that greater access to guns is associated with higher numbers of gun deaths.

2. Use More Violence Risk Assessments in Schools

In the years since the Columbine shooting in 1999, researchers and federal law enforcement agencies have  and developed  to gauge the likelihood of actual violence by a young person identified as a possible risk.

These assessments are conducted by professionals that include police officers, school officials, and teachers. They also involve mental health professionals, such as school counselors and psychologists. Together, these professionals all consult with one another to determine a young person鈥檚 risk for violence.

These teams may not be able to prevent every possible incident. Still, this sort of approach is critical to improving the process of identifying and stopping potential shooters overall. Guidance on how to use these assessments is  and based in extensive applied research. For example, in , 鈥溾�濃�攁 set of guidelines for the investigation of a reported threat, thorough assessment of the individual making the threat, and preventive or protective measures to be taken in response鈥攚ere shown to . They were also shown to lower out-of-school suspension rates while improving teacher and student perceptions of safety.

3. Expand Evidence-Based Strategies to Reduce Violent Behavior

To help reduce the number of youths who grow up to become violent, governmental agencies could increase the availability and use of evidence-based interventions in schools.

Aggressive and violent behavior has been shown by research to emerge from a . The factors include impulsivity, callousness, exposure to violence, and victimization.

In light of this research, effective approaches were developed to  aggression by teaching students to problem-solve for better responses to peer conflict. They also teach students to think carefully about others鈥� motivations when they feel provoked.

Programs shown to  aggressive behavior typically train youths who already have exhibited some aggression on new and better coping skills for managing stress and anger. And for youths who have become seriously violent,  teach new, constructive behavioral and communication skills to youths and their caregivers. The treatments also help young people develop better relationships with family members and school personnel.

4. Make School Buildings Safer

The Robb Elementary School shooter entered the school building through a door that reportedly . This highlights the absolute importance for schools to take and maintain physical security measures.

In the wake of school shootings, schools often turn to solutions such as .

These measures can have  on students鈥� perceptions of safety and support鈥攃ameras posted outside appear to increase felt safety, whereas cameras posted inside seem to promote unease.

Increased law enforcement presence might make  in school. But it also might  without .

Still, there are a number of ways for schools to  without increasing student anxiety or needlessly deploying law enforcement. For example, in one large study, students were less likely to skip school because of safety concerns when metal detectors were . In that study, those metal detectors also reduced the likelihood of weapons being brought into schools.

5. Reduce Exposure to Violence Through Media and Social Media

Entertainment media and social media are  of physical assaults, gun violence, and gore. Exposure to and participation in virtual violence might not lead to aggressive behavior for all children and adolescents. But watching violent programs and playing violent video games can lead to increased , , emotional , and, ultimately, . These effects can potentially be lessened by reducing the amount of screen violence to which children and adolescents are exposed over time, particularly early in development.

This article was originally published by聽. It has been republished here with permission.