According to research which has been made, a 'porn-minded' person is more forgetful than a 'clean-minded' person. Once a human being has seen a pornographic material, the information is kept in their mind forever. They are able to remember at least one of pornographic websites if they ever accessed to. We can see in our own midst, a good memorizer is always the 'clean-minded' person
I would say substance abuse is the biggest corrupting learners minds, although I am just making this up for a reason. The fact is that different people have different reactions to things. For some people pornography could be a stimulant towards learning. Just remember the case of one of the greatest mathematicians to live, Paul Erdos, who only could function well when blasted on amphetamines or some other narcotic.
Each to their own I say, but to say pornography is a main role, is naive.
Pornography is about as dangerous as reading the Bible. If you watch enough of either and fervorently believe much of the content is real, and that things should be as portrayed, you can end up doing a lot of damage to yourself and to your surroundings. In moderation either is okay.
Main role? Heck no. Moderate viewing of porno is okay. On the other hand with porno addicted, likely to affect learners' minds. Watching no porn doesn't mean strengthen in one's mind either. Any sexual temptation can be helped by porn or masturbation, so you can focus better on studying after you 'done'. I had access to internet or porn not until I was sophomore in high school (move to usa), i didn't do well in school before, but now i am. Im not saying porn improves my grade lol, but it doesn't affect my mind.
Porn isn't responsible for corrupting learner's minds, it's the wave of hormones telling them to hump anything that moves. Every teenage boy is anxious because they always have to fight the urge to have sex. I went through that in high school, I remember how bad it was. It was hard to focus in class and it felt like I was going to die if I couldn't have any relief; thoughts of girls and potential sex couldn't escape my mind no matter how hard I tried. Of course, while thinking those thoughts, you have to suppress your emotions and appear stern as if nothing's wrong. With all this going on, how are you to expecting a student do anything more than minimally retain the information taught in school? I believe that moderate use of pornography and masturbation is healthy in keeping people mentally stable, just don't overdo it.
For pornography to play the main role in corrupting learner's minds, one has to first presuppose that the learner has a mind which is actively engaged in constructive learning. Many learners tend not to study at all. Complete ignorance is a far worse form of "corruption" than at least paying attention to something.