Drayton Michaels, CTC is the owner of Urban Dawgs Dog Training in Red Banks, NJ. He also holds a Certification in Dog Training and Behavior Counseling from the San Francisco SPCA Academy for Dog Trainers (known as “the Harvard for dog trainers”).
Why aversive methods are bad:
There are a few studies out there that have concluded that when dogs reach social maturity about two years of age, some of the larger breeds are socially mature closed to three. But when dogs are 2 years of age and are socially mature, they have the cognition of a three-year-old child. So, you have a toddler with teeth for the rest of your life. If you look at from the perspective that the cognition of a dog at social maturity is that of a three-year-old child and you are shocking and chocking and hitting and you are blaming this dog, it’s pretty twisted. I mean no one would do that to a toddler. You don’t need to get upset with a toddler. You are three, you are okay. You are little baby you are just learning. So it doesn’t mean that dogs can’t learn or that they are not smart, what it means is that cognitively they are limited and cannot be jealous or spiteful or stubborn. If there something that the dog is doing, there is reinforcement attached to it.
For a full list of why aversive training is bad, please visit Danger Of Using Fear and Pain Based Training Approaches