Violence prevention works best when it operates on multiple levels at once, from teaching individual skills to reshaping the physical and social environments where people live. The CDC uses a four-level framework (individual, relationship, community, and societal) to organize prevention efforts, and decades of research show that targeted interventions at each level can measurably reduce violent incidents. Here’s what actually works and how these strategies play out in practice.
Building Individual Skills Early
The most cost-effective violence prevention starts young. Universal school-based programs that teach conflict resolution, emotional regulation, and social skills reduce violent behavior across all grade levels. A systematic review of 53 studies found median reductions in violent behavior of 32% among pre-kindergarten and kindergarten students, 18% among elementary students, and 29% among high schoolers. Middle school programs showed a smaller but still meaningful 7% reduction.
Three well-studied programs illustrate the return on investment. The Good Behavior Game, a classroom management strategy that rewards cooperative behavior, returns an estimated $81 for every $1 spent. Promoting Alternative Thinking Strategies (PATHS), which teaches emotional literacy and self-control, returns $22 for every dollar. Life Skills Training, focused on decision-making and resistance skills, returns $15 for every dollar. These programs don’t just prevent fights in school. They build the emotional infrastructure that reduces violence across a person’s lifetime.
Strengthening Relationships and Families
Your closest relationships, with partners, family members, and peers, shape how you handle conflict and stress. Prevention at this level focuses on giving people better tools within those relationships. Parenting programs that strengthen communication between parents and children reduce risk factors for both experiencing and committing violence later. Mentoring and peer programs promote healthy norms around how disagreements get resolved.
For intimate partner violence specifically, the CDC identifies three core strategies: teaching safe and healthy relationship skills (through social-emotional learning for youth and relationship programs for couples), engaging influential adults and peers (including bystander training and involving men and boys as allies), and strengthening economic supports for families. That last one matters more than people realize. Financial stress is a consistent driver of household conflict, and programs that improve household financial security and work-family supports reduce intimate partner violence by addressing one of its root causes.
Redesigning Physical Spaces
The built environment has a surprisingly large effect on violence rates. A set of principles known as Crime Prevention Through Environmental Design, or CPTED, guides cities and organizations in making spaces safer through five strategies.
- Natural surveillance: Designing spaces so people can see and be seen. This means good lighting, unobstructed windows, and clear sightlines. The idea is simple: people are less likely to commit violence when they know they can be observed.
- Natural access control: Using signs, fences, landscaping, and barriers to distinguish public from private space. Limiting access keeps people out of areas where they shouldn’t be and reduces escape routes for potential offenders.
- Territorial reinforcement: Encouraging a sense of ownership over shared spaces. When nobody claims a space, it can become a site for criminal activity. Defined boundaries through fencing, signage, and landscaping promote community watchfulness.
- Maintenance: Keeping spaces clean and functional. A well-maintained area signals that it’s observed and cared for, which discourages antisocial behavior and encourages public use.
- Activity support: Programming spaces for positive community use so they stay active and populated.
The data backs this up. Public housing buildings surrounded by more vegetation had 56% fewer violent crimes than buildings with little greenery. Cleaning up vacant lots was one of the most effective strategies in a community policing study, contributing to a 20% decrease in calls to police in treated areas. Something as straightforward as mowing grass and planting trees changes behavior.
Community-Based Violence Interruption
Violence interruption programs treat violence like a contagious disease. Trained outreach workers, often people with credibility in high-risk communities, intervene directly in conflicts before they escalate to shootings. They identify disputes, mediate between parties, and connect people to services.
Results from these programs are genuinely mixed, and that matters to understand. A study of the Cure Violence model across multiple Baltimore neighborhoods found that some sites saw meaningful reductions in homicides (21% and 9% decreases in two neighborhoods), while others saw increases (69% and 76% in two different neighborhoods). One site, McElderry Park, showed a 62% homicide reduction over three years, but that protective effect faded to 24% over seven years. The takeaway isn’t that violence interruption doesn’t work. It’s that implementation quality, community context, and sustained funding determine whether it succeeds. These programs are not a plug-and-play solution.
Hospital-Based Intervention After Injury
People who survive a violent injury are at high risk of being injured again. Hospital-based violence intervention programs catch people at a critical moment, while they’re recovering, and connect them with case managers, mental health services, housing support, and job training. The goal is to break the cycle before the next incident.
The evidence here is strong. One program reduced the one-year reinjury rate from nearly 9% to under 3%. Another cut intentional violent reinjury from 16% to 4%. In one study, people who didn’t receive the intervention were six times more likely to be hospitalized again for a violent injury than those who did. These programs work because they reach people during a window when they’re often motivated to change, and they address the practical barriers (unstable housing, unemployment, untreated trauma) that keep people in dangerous cycles.
Recognizing Warning Signs
Targeted violence, the kind directed at a specific person or place, typically follows a behavioral pathway rather than erupting without warning. There is no single profile of someone who commits violence, but threat assessment experts have identified patterns that show up repeatedly across both completed and prevented attacks.
Concerning behaviors include fixation (an intense preoccupation with a person, group, or cause), leakage (communications hinting at plans to harm others), notable changes in routine, escalating aggression such as domestic violence or animal cruelty, end-of-life planning behaviors, and increasing desperation or distress. No single behavior on its own confirms danger. What matters is the combination of these signs alongside life stressors, personal risk factors, and whether stabilizing influences are present or absent. If you notice these patterns in someone, most communities have threat assessment teams through schools, workplaces, or law enforcement that can evaluate the situation.
Policy and Societal-Level Change
The broadest layer of prevention involves the social and economic conditions that make violence more or less likely across an entire population. Societal-level strategies include shifting cultural norms that treat violence as an acceptable way to resolve conflict, reducing economic inequality between groups, and expanding access to education and employment.
Extreme risk protection orders (sometimes called red flag laws) represent one policy tool that has drawn significant attention. These laws allow courts to temporarily remove firearms from individuals deemed a risk to themselves or others. Studies examining their impact on suicide have generally found either reductions or uncertain effects, with low rates of firearm suicide among people whose guns were removed. Their effect on homicides remains uncertain, with most studies limited by small sample sizes and short timeframes. The honest assessment from RAND Corporation is that more data is needed, but the early signals on suicide prevention are encouraging.
Economic policies may be the most underappreciated violence prevention tool. Programs that strengthen household financial security, improve employment opportunities, and reduce residential instability address the structural conditions that concentrate violence in specific communities. Violence is not randomly distributed. It clusters where poverty, segregation, and disinvestment overlap, and policies that change those conditions change violence rates.