In this example, let’s say the dog properly (maybe coincidentally) performed. However, that does not mean that he will always respond. Remember, a conditioned reflex means that your dog has ABSOLUTELY NO CHOICE BUT TO RESPOND PROPERLY!

Later, when you are done with all of the intricacies involved, test it out like this: Find yourself and your trained dog in a comfortable situation, like yourself sitting in your easy chair and him snoozing by the fireplace. Ask him to come in the proscribed manner.
When he gladly jumps up and sticks his big wet nose in your face, tell him he’s good, and tell him he’s free. Let him resume his leisurely pursuits and call him again.
Repeat this until maybe on the fourth or fifth occasion that you call him, he believes there is no point to getting up and coming all the way over to you just so you can tell him he’s cool and that he may resume his pursuits. Just as soon as he refuses your trivial request to come to you, follow the procedure to make him come.
Remember; any time that your dog does not respond the first time you ask him to come, regard this as a major behavior problem and take the appropriate action to remedy the situation.

So now we must try again to set up the situation whereby your dog refuses to perform a request. Once again, repeat your (1st request) “dogsnamecomegoodboy”.

If he does not spin immediately to respond, instantly repeat the phrase with the accompanying sound: your (2nd request) “dogs-name-COME-good-boy”, this time, using the can, by giving it one brief, hard, downward shake, (not a rattle), and only on the “key” or “cue” word, in this example, COME.