Here's an interesting tidbit that I've come up with in regards to RVD's psychology and selling...
If any of you have seen any old school southern wrestling or anything puro in the last twenty years, then you all know about Stan "The Lariat" Hansen. He was called "The Lariat" for the a reason: He had the best lariat in the business. The matches I have seen him in, the people have worked over his lariat arm to the point where he shouldn't even be able to use it.
Now look at RVD. Triple H attacked his legs because, like Hansen's arms, the legs are RVD's best weapon. They account for 95% of his offense. What happened after the opponent(s) worked on Hansen's arm? Hansen would gut it up and kill him with the lariat. So what happens with RVD? He guts it up and starts going at his opponents with his kicks and springy moves. It's all about how the people perceive the person inside the ring when it comes to psychology.
The fans know RVD is a high flyer. Chances are, people think it's smart to work on the legs, but that in the end, it won't matter, because the legs are the strongest part of Van Dam's body, and he can overcome any punishment that's given to him. RVD's selling might be a problem, but I don't necessarily think it's a problem with psychology. Unless the fans somehow buy into the fact that his legs are useless, I don't think you'll see RVD selling the legs that much anytime soon.