This is mostly true, but I don't think the evidence is there for videogames. What you might find evidence for w.r.t videogames is that they'll change your behav

This is mostly true, but I don't think the evidence is there for videogames. What you might find evidence for w.r.t videogames is that they'll change your behavioral responses under stress, for example having played many shooter games, and given a real gun, then put in a stressful situation, you're more likely to pull the trigger on another human than otherwise. For mass shooting, absolutely true: https://www.youtube.com/watch?v=PezlFNTGWv4 https://www.youtube.com/watch?v=PezlFNTGWv4 (Skip to 1:30 if you want an argument from authority.) I suspect it's true for suicides as well. People underestimate copycat / monkey-see-monkey-do influences.