Because 18-year-old Payton Gendron provided in his 180-page diatribe a motive for shooting 10 people in Buffalo, NY, on Saturday night, police didn’t need to search for one, as they often have other in mass shootings. But using motive to prevent mass shootings will just get you a useless answer to the wrong question.

The right question is: What happened to this person? What happened to a beautiful baby boy to turn him into an 18-year-old killer spouting racist screed?

In those questions—and looking at the answers through the lens of positive and adverse childhood experiences—lie our solutions.

In a 2019 Los Angeles Times article, “We have studied every mass shooting since 1966. Here’s what we’ve learned about the shooters”, Jillian Peterson and James Delaney wrote: “First, the vast majority of mass shooters in our study experienced early childhood trauma and exposure to violence at a young age. The nature of their exposure included parental suicide, physical or sexual abuse, neglect, domestic violence, and/or severe bullying.”

Research clearly shows that the road that leads from a precious infant becoming an abused or neglected child who grows up to become a distressed murderer is predictable. That was revealed in the CDC-Kaiser Permanente Adverse Childhood Experiences Study.

The ACE Study showed a remarkable link between 10 types of childhood trauma and being violent or a victim of violence, as well as experiencing the adult onset of chronic disease and mental illness. The ten types of childhood trauma include experiencing physical and emotional abuse, neglect, living with a family member who is addicted to alcohol or who is mentally ill, and witnessing domestic violence. (For more information, see PACEs Science 101 and What ACEs/PCEs Do You Have?) Subsequent ACE surveys include experiencing bullying, racism, the foster care system, living in a dangerous community, losing a family member to deportation and being a war refugee, among other traumatic experiences.

The point is — and the science is irrefutable now — just as a bullet rips through flesh and bone, a child experiencing ongoing encounters that cause toxic stress, without positive intervention to help the child, will suffer damage to the structure and function of their brain.