There are so many methods out there today isn't there? Everyone has their trainer that they follow or their discipline they stick to etc...
The truth is that there are many ways to train a horse! Yes almost all of the methods work! Horses are amazing creatures and will adapt to almost any training method. The differences I have noticed between the methods though are how long it takes for a horse to learn, how readily the horse remembers the lesson, and what the residual side affects of training on the horses behavior.
Check this out:
Bookends Farm had an excellent post that I would love for you guys to read. I think it really explains the consequences of different training methods on the horse.
What I have personally noticed with + reinforcement is that it takes Bodhi less repetitions to learn new skills, and that he almost never forgets what he has learned. I have had very similar experiences to the blog post above where I slip back into traditional training and correct or even punish and I always regret it. As she says it does work, but is it really worth the stress in our relationship, or the negative consequences?
Yet another reason to love Steffen Peters... he is a clicker trainer! I am not surprised but I am definitely proud to learn that the riding team that won Rolex use clicker training!