I use positive training methods, also known as reward based methods based on the scientific principles of Learning Theory. One of the leading principles of Learning Theory is that if you reward a dog for a behavior, that behavior is likely to be repeated more often, and if you prevent reinforcement of a behavior, the behavior will stop. Using positive methods, nonaversive methods, basically means that we use those principles to our advantage by focusing on what we want the dog to do as opposed to punishing "bad" behavior.
THis way of training is rapidly becoming the new standard in dog training and is a stark contrast to more traditional punishment based methods. We get better, more durable and more reliable results, but with fun and trust instead of fear and stress. We get willing compliance, as opposed to just obedience.