About 18 years ago I moved back to the US from overseas to find the world of dog training in a sort of renaissance. Instead of working to avoid correction (remember how dogs were literally yanked back to your leg when learning to heel?), training was now something that the dogs enjoyed and in which they eagerly participated as equal partners. There was a new focus on working for rewards, shaping and clicker training, making the dog operant, and incorporating games into training.