"Aversive methods" refer to techniques or actions that are unpleasant or harmful, often used to discourage certain behaviors or enforce control. Full definition
A recent study (Herron M.E. et al. 2009) found that dog owners who used aversive methods when working with dogs with a history of aggressive tendencies were more likely to trigger aggressive responses from the dogs. (houstonpettalk.com)
Progressive zoos nationwide have moved away entirely from using positive punishment and aversive methods when working with large and even potentially dangerous animals. (dogpsychologistoncall.com)
The «break» refers to breaking in the sense of breaking a horse, harkening back to old - school aversive methods for training horses. (cindysschnauzers.com)