United Kingdom-based newspaper The Guardian recently ran this headline: “UK to tackle loneliness crisis with cash injection. More than 120 projects will receive funding to help those affected and reduce stigma.” This reminded me of a book written in 2000, “Bowling Alone,” by Robert D. Putnam.

There is no single personality profile that can reliably predict who will use a gun in a violent act — but individual prediction is not necessary for violence prevention, according to a comprehensive report on gun violence just released today by the American Psychological Association (APA).