...for reward based training in the real world. http://dogtime.com/dog-training-food-lure-reward-dunbar.html
Ian Dunbar is not a clicker trainer. As you will see by this article, he is a lure/reward trainer. I have found that many pet owners are unwilling to try clicker training at first because they can't seem to handle leash, clicker, food, dog, all at the same time. Lure/reward is easier for many people to learn if they are new to dog training. And, for those who would like to try it, Ian's videos are available on Amazon videos on demand, so you can download and watch whenever you want. Personally, I find clicker training faster, but if you have a rescued dog that is not clicker savvy and you are new to positive training, lure/reward is fun and effective, too, and is forgiving of the errors in timing that newbies sometimes make. To be effective, punishment has to be issued in a precise and timely manner so that the dog actually associates the punishment with the action you deemed inappropriate. Imagine that you don't want your dog to forge ahead, but you are late with your correction and actually issue it when he falls back by your side. What have you just told him? Stop walking next to me??? But, if you are walking along and you accidentally reward him for being slightly ahead, all that needs to happen is for you to gradually issue rewards as he gets closer and closer to your side, and you will have "shaped" a nice position for your dog to be in.