I brought this up in the thread about the new Don't be Afraid of the Dark movie, but it seems more and more common, from the trailers anyway because I don't see the movies that come out, in a lot of horro/suspense movies the main character is a child who knows something is wrong and nobody believes them. And this is nothing new, look at Invaders from Mars almost 60 years ago; but I think it's getting tired, I don't know the ratio of movies where it's a kid nobody believes vs. an adult nobody believes, but I think it's more challenging and a bit more terrifying when it's a grown, logical, rational adult that everybody is suddenly questioning.
We were all kids and had that fear of nobody, not even our parents believing us about something, but a part of that is, I think, as kids, at least it seems, that you have to be of a certain age before people will believe you. The next step is what happens when you are that age and still people think you're making stuff up? There was a movie in the 40s or 50s called The Window about a 12 year old boy who witnessed a murder and nobody believed him, I never saw the whole thing but it reminded me a bit of Rear Window, even though Jeffries never actually SAW the murder, the problem was still there, nobody believed him, they had a rational explanation for everything he saw.
What's everybody else's take on this?