ScienceDirect - Applied Animal Behaviour Science : Survey of the use and outcome of confrontational and non-confrontational training methods in client-owned dogs showing undesired behaviors

ScienceDirect - Applied Animal Behaviour Science : Survey of the use and outcome of confrontational and non-confrontational training methods in client-owned dogs showing undesired behaviors: "Dogs presenting for aggression to familiar people were more likely to respond aggressively to the confrontational techniques “alpha roll” and yelling “no” compared to dogs with other presenting complaints (P < 0.001). In conclusion, confrontational methods applied by dog owners before their pets were presented for a behavior consultation were associated with aggressive responses in many cases."