Corporal punishment/physical punishment decrease. School shootings increase.
The #1 correlating factor to more shootings is more guns: www.hsph.harvard.edu/hicrc/firearms-research/guns-and-death/
And with more cars there are more automobile accidents. I am trying to get people to look at the bigger picture with these polls. We don’t blame the alcohol or the car when a drunk kills someone. We should look beyond the gun as well.
Besides according to this site, the ratio of households having guns have stayed about the same 38-42%. Although it peaked in 1990 at 47%.
There are so many factors that I think it would be a mistake to say that there is a sole, causal relationship between the two (if that's the claim.)
Are the related in a general sense?
Definitely not a sole relationship, but I think there is some causal factors in this. As you can tell by all these polls I fired off, I’m thinking about many possible factors.
It's a really complex issue.
At the same time that lack of discipline may lead to a lack of value of the self and the lives of others, aggression transfer is also a concept in psychology.
Boss yells at the man every day, man beats the kid every week, kid eventually shoots the school as a way of lashing out. (not as a rule, just as an example of what could happen, to show what aggression transfer is like.)