In one study laboratory-bred Beagles were divided into three groups. Group A received an electric shock when the dogs touched the prey (a rabbit dummy fixed to a motion device). Group H received a shock when they did not obey a previously trained recall command during hunting. Dogs in group R received the electric shock arbitrarily, i.e. the shock was administered unpredictably and out of context. Group A did not show a significant rise in salivary cortisol levels, while group R and group H did show a significant rise. This led to the conclusion that animals which were able to clearly associate the electric stimulus with their action, i.e. touching the prey, and consequently were able to predict and control the stressor, did not show considerable or persistent stress indicators, while animals that were not able to control the situation to avoid the shock did show significant stress.[66]
Researchers have described several reasons why the dominance model is a poor choice for dog training.[75] First, a relationship based on dominance is established to gain priority access to scarce resources, not to impose particular behaviors on the less dominant animal,[76] so the dominance model is irrelevant for most of the behaviors that people want from their dogs, such as coming when called or walking calmly on a leash.[75] Second dominance-submission relationships, once established, are constantly tested and must be regularly reinforced.[77] Thus people, particularly children and the elderly, may not be able to retain their rank and are at risk of being injured if they attempt to do so.[75] Third, dominant individuals gain priority access to resources, but only while they are present, establishing dominance over a dog does not guarantee its behavior when the dominant individual is distant or absent.[75]
It’s an instinct for your dog to want to investigate things you put near his muzzle, so he is likely to touch the bell lightly with his nose. Be ready for that moment and click and treat. If he is apprehensive, put the treat very near the ribbon of bells so that he almost HAS to touch them in order to get at his treat.  When he touches, click and treat!
A dog learns from interactions it has with its environment.[1] This can be through classical conditioning, where it forms an association between two stimuli; non-associative learning, where its behavior is modified through habituation or sensitisation; and operant conditioning, where it forms an association between an antecedent and its consequence.[2]
Lindsay says of this study, "Schilder and Van der Borg (2004) have published a report of disturbing findings regarding the short-term and long- term effects of shock used in the context of working dogs that is destined to become a source of significant controversy ... The absence of reduced drive or behavioral suppression with respect to critical activities associated with shock (e.g., bite work) makes one skeptical about the lasting adverse effects the authors claim to document. Although they offer no substantive evidence of trauma or harm to dogs, they provide loads of speculation, anecdotes, insinuations of gender and educational inadequacies, and derogatory comments regarding the motivation and competence of IPO trainers in its place." [68]

In the 1980s veterinarian and animal behaviourist Ian Dunbar discovered that despite evidence on the peak learning periods in animals, few dog trainers worked with puppies before they were six months old.[27] Dunbar founded Sirius Dog Training, the first off-leash training program specifically for puppies, which emphasizes the importance of teaching bite inhibition, sociality, and other basic household manners, to dogs under six months of age.[33] Dunbar has written numerous books, and is known for his international seminar presentations and award-winning videos on puppy and dog behavior and training.[34]
While working with a dog, Millan often uses vocal marks such as tsch,[33] gestures, and body language to communicate with dogs rather than speech or the dog's name. Millan encourages owners to create their own unique sound that works for them.[32] He believes that dogs sense, understand, and respond to a person's energy more easily than their speech.[34]
Pay attention to your puppy while you're waiting for him to do his business. Sometimes, especially in the beginning, you might have to wait a little while before your puppy gets around to using the toilet. You can do some exercises or some light gardening, but keep on eye on your puppy because you'll want to take him back in as soon as he's finished.
Letting your pup outside every hour or two gets old, but it’s the simplest way to prevent accidents from happening. If you’ve ever wondered why some people choose to get new puppies during the summer or when they’re on vacation it probably has to do with potty training. If you’ve house training a dog before you know how much time & commitment it takes.
Dog training is the application of behavior analysis which uses the environmental events of antecedents and consequences to modify the dog behavior, either for it to assist in specific activities or undertake particular tasks, or for it to participate effectively in contemporary domestic life. While training dogs for specific roles dates back to Roman times at least, the training of dogs to be compatible household pets developed with suburbanization in the 1950s.