There are primarily two types of training methods, inducive and conducive. Inducive is basically positive reinforcement of desired behavior and the withholding of praise is the only correction. Conducive is forced and physical, showing the dog that is painful not to comply with an obedience command. For example, Koehler's heeling post method. If a dog heels too wide, he suggests you run by a sturdy post. If the dog goes on the wrong side of the post...well, you can see the unfortunate outcome for the dog. Koehler has written many books and was, in his day, THE dog trainer. He was the chief trainer for Walt Disney Studios and instructor for the U.S. Army K9 Corp and director for obedience training for the world's largest dog club. While these conducive methods obviously work, the end product is not one of a motivated, willing to please attitude, but one of "I have to or I'll be punished". I submit to you...anything you enjoy you excel at. Although dogs do process thought differently than we do, this is one area that we are the same.