"I’m amazed at the number of people who point the clicker at their dog, click it, and, when nothing happens, complain that clicker training doesn’t work. The clicker is not a remote control."
LOL! Yup.....people say things like, "It doesn't work." Or...."It doesn't work on all dogs." But they don't have all the information or haven't learned it well enough to be able to vary and make compensations, adjustments to fit individual situations and dogs. It does take a litte study, all right, but it definitely does work and the concept of operant and classical conditioning does work on all dogs because all animals with a brain are obedient to the laws of learning. And that's what it is..."law." Just like gravity is a law of physics, so is operant conditioning a law of learning.
Of course, clicker training or using a secondary reinforcer falls under classical conditioning. But when we're talking about "positive" method training, we're talking about both operant and classical conditioning.
I think this article is good because it explains some of the myths and misunderstandings and shows that there are solutions to overcome objections. Of course, in one article, it can't cover everything. But it gives the gist of it.