OK kids, this might get a little academic so don't panic.
There is an article by Eric Lamberson in the latest USPSA down range email that talked about Dr Anders Ericsson's research into deliberate practice, and Malcolm Gladwell's book where he plays with the theory and calls it the 10,000 hour rule. You may have heard of this.
There is a really good podcast on this very topic that interviews both Ericsson and Gladwell that I think relates directly to what Ben, Steve Anderson, Bob Vogel etc are trying to get across about how deliberate practice is necessary and way more useful to become good at just about anything. The podcast is part of Freakonomics radio done by Steve Gubner (Freakonomics is a good podcast and they rarely get political so you won't have a bunch of liberal politics jammed down your throat). This particular podcast was aired last year 4/28/16, episode 244, and was called "How to become Great at just about anything". A link is here: http://freakonomics.com/podcast/peak/
Not sure the link works but that's to the webpage anyway. Its way easier to just go to your phone podcast app (iphone podacast app, or Audible, google play, Spotify, Stitcher) and look up Freakonomics, you'll find it. In the podcast they highlight a woman who decides to learn how to sing, and she is horrible, I mean really bad. But she practices and trains a ton and the results are ... wow. The podcast is 50 minutes long. If you want an academic/scientific explanation why Ben's methods work, this is the closest I have ever heard.
A second podcast that relates to getting gooder at shooting is the next one they do, 5/4/16, episode 245, "How to Get More Grit in Your Life". This is for those of us who want to get better, but hate the boredom of practice and training, i.e. most normal human beings. link http://freakonomics.com/podcast/grit/