I find it hard to get a good source on this (looking online for anything paedophilia related will mostly list activist websites and research done by activists). However, I do remember encountering some research that indicated that porn normalises the deviant lust these people feel, which is obviously bad.
There's a lot of research necessary on this subject, but very little of it is ethical. You can't take two large groups of paedophiles and let them go unchecked to measure how many kids they abuse over the years.
What doesn't help is that the general population is very much of the opinion that all paedophiles should be killed/locked up for life; no paedophile not already under treatment will ever partake in these types of research. If you show up at a random university study and come in saying "Hi, I'm Bob the paedo", you're going to be arrested.
There's a lot of research necessary on this subject, but very little of it is ethical. You can't take two large groups of paedophiles and let them go unchecked to measure how many kids they abuse over the years.
What doesn't help is that the general population is very much of the opinion that all paedophiles should be killed/locked up for life; no paedophile not already under treatment will ever partake in these types of research. If you show up at a random university study and come in saying "Hi, I'm Bob the paedo", you're going to be arrested.