The American Veterinary Society of Animal Behavior has released a new position statement on the role of aversive training methods in training and behavior modification.
The statement says that aversives are not only ineffective, but are counterproductive. Positive, rewards-based, training is the most effective method in both animal training and behavior modification.
AVSAB-Humane-Dog-Training-Position-Statement-2021.pdf (ftlbcdn.net)