I haven't personally conducted any studies on that. I have read work by other people who have talked about it. It often depends on how closely a child will identify with it. If they see a child very similar to them—the same age, that kind of stuff—then it's going to hit home very hard for them and it will certainly bring fear and a belief that the world is not a safe place.
On April 4th, 2017. See this statement in context.