By better understanding young shooters and the factors that influence the propensity to commit these crimes, we may be able to reduce the incidence of mass shootings. This post focuses on factors unique to the online ecosystems that many young people, especially young men, inhabit.

While there isn’t a universally accepted definition of a “mass shooting," roughly following The Violence Project and other researchers, I use three criteria: four or more fatalities; occurs in a public location; and is unrelated to gang violence, drug deals, or other criminal activity.

A complex interplay of individual vulnerabilities, social dynamics, and digital environments shapes the psychology of radicalization among young adults. There is strong evidence that online spaces act as amplifiers and facilitators—rather than sole causes—of radicalization, creating an “ecology of extremism" in which exposure, reinforcement, and group dynamics converge.

Research has identified at least three patterns of online behavior associated with increased risk:

Young people who spend large blocks of time inhabiting an online universe may be drawn into the “Ecology of Extremism.” This ecosystem is characterized by complex contagion, prolonged exposure to propaganda, and extensive misinformation.

Research shows that prolonged periods online facilitate a dynamic “ecology of extremism” for young adults, as digital platforms amplify existing vulnerabilities and social grievance. This ecosystem spreads and reinforces radical ideologies that can lead to violent behaviors, such as mass shootings. Professionals, parents,........

© Psychology Today