--- title: "Meaning & Key Takeaway of: A year-long study by the University of…" description: "\"“A year-long study by the University of Pennsylvania, ending in 2009 and published in the journal Applied Animal Behavior Science (Elsevier), showed th..." image: "https://sms4smile.com/quotes/i/57e/edward-custo-192817_animal-behavior_a-year-long-study-by-the-university-of-p_5388.jpg" --- # A year-long study by the University of Pennsylvania… ![“A year-long study by the University of Pennsylvania, ending in 2009 and published in the journal Applied Animal Behavior Science (Elsevier), showed that aggressive dogs who were trained with aggressive, confrontational, or aversive training techniques, such as being stared at, growled at, rolled…” quote by Edward Custo](https://sms4smile.com/quotes/i/57e/edward-custo-192817_animal-behavior_a-year-long-study-by-the-university-of-p_5388.jpg) [Download](https://sms4smile.com/quotes/i/57e/edward-custo-192817_animal-behavior_a-year-long-study-by-the-university-of-p_5388.jpg) [Open image](https://sms4smile.com/quotes/i/57e/edward-custo-192817_animal-behavior_a-year-long-study-by-the-university-of-p_5388.jpg) > ““A year-long study by the University of Pennsylvania, ending in 2009 and published in the journal Applied Animal Behavior Science (Elsevier), showed that aggressive dogs who were trained with aggressive, confrontational, or aversive training techniques, such as being stared at, growled at, rolled onto their backs, or hit, continued their aggressive ways. Non-aversive training methods, such as exercise or rewards, were very successful in reducing or eliminating aggressive responses.”” Edward Custo ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Aggressive dogs trained with aversive methods stay aggressive; reward‑based training reduces aggression. **In simple terms:** Harsh training keeps aggression; rewards calm dogs. Key Takeaway Use positive reinforcement for dog behavior. Themes animal behavior training aggression humane methods dog welfare Mood concerned hopeful practical Type research summary advice When to use this quote - dog training classes - pet owners - animal shelters - veterinary behavior consultations Key Concepts aversive conditioning positive reinforcement behavior modification Questions to Reflect On - How can owners ensure consistency in reward‑based training? - What signs indicate a dog needs professional help? A Different Perspective Aggressive dogs may need time and consistency beyond training alone. ★ ★ ★ ★ ★ No ratings yet [Animal](https://sms4smile.com/quotes/about/animal/) [Animal behavior](https://sms4smile.com/quotes/about/animal-behavior/) [Dog](https://sms4smile.com/quotes/about/dog/) [Education](https://sms4smile.com/quotes/about/education/) [Fitness](https://sms4smile.com/quotes/about/fitness/) ## Related quotes > [I did protection work with dogs. I trained dogs how to protect their handlers and owners. 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