If such a test could be created then I am for it. I grew up with guns and respect their power. But I'm afraid most people who want to use them or already have them do not have the same respect. Countries like the UK and AU have already been down that path before and walked away from gun ownership. The murder rate is laughably low compared to the US. Access to guns must have something to do with it although having mentally unstable people with access to guns is probably even more important of a factor. Thank you for posting.