No, I'm not joking. Simply being in possession of real child research should not be enough to make someone a criminal. At most they should be closely watched for a while to make sure they aren't raping anyone.
If you somehow get your hands on childresearch - most likely through paid means because no ones giving this stuff away for free - you are supporting and helping create more of it. Above all, you have absolutely no other real reason whatsoever to keep it on your computer especially for any significant amount of time, apart from being a vile piece of stuff and getting off to it. This forget face was doing nothing short of that either.