I am a positive reinforcement trainer (+R) that uses a clicker to mark wanted behavior, either trained or natural, and then reward that behavior. This works by providing proper motivation and communication to your dog, which in turn teaches them which behaviors they show that are beneficial to them. I understand that any creature, only repeats behaviors that are rewarded in some way. By showing them new behaviors and rewarding them, we teach them which ones you would like them to show. I come to your home and see you and your dog in the actual environment that they are comfortable in and where they show most of their behavior. This facilitates behavior change much faster than going to a class with tons of distractions.