Typical positive reinforcement events will satisfy some physiological or psychological need, so it can be food, a game, or a demonstration of affection. Different dogs will find different things reinforcing. Negative reinforcement occurs when a dog discovers that a particular response ends the presentation of an aversive stimulus. An aversive is anything that the dog does not like, such as verbal admonishment, or a tightened choke chain.[41]

It’s human nature to look for what’s wrong and take what’s right for granted. But we need to do the complete opposite with our puppies. Always reward and praise good behavior and ignore the things that go wrong. This is especially true with potty training process accidents. Bathroom mistakes are inevitable with puppies, so please don’t overreact and frighten or punish your pup.

Confine your puppy to his, 'puppy-proofed' bathroom or an exercise pen and paper (or wee-wee pad) the entire floor. Put his bed, toys and food/water bowls there. At first there will be no rhyme or reason to where your pup eliminates. He will go every where and any where. He will also probably play with the papers, chew on them, and drag them around his little den. Most puppies do this and you just have to live with it. Don't get upset; just accept it as life with a young puppy. The important thing is that when you get home, clean up the mess and lay down fresh papers.

Clicker training, a common form of positive reinforcement, is a simple and effective dog training method. Although it is still fine to train your dog without clicker training, many people find it helpful. With clicker training, you can easily and effectively teach your dog all kinds of basic and advanced commands and tricks. It's fast and easy to learn how to clicker train your dog
Based on the principles of social learning, model-rival training uses a model, or a rival for attention, to demonstrate the desired behaviour.[69] The method was used by Irene Pepperberg to train Alex the African Grey Parrot to label a large number of objects. McKinley and Young undertook a pilot study on the applicability of a modified version of the model-rival method to the training of domestic dogs, noting that the dog's origins as a member of large and complex social groups promote observational learning. The model-rival training involved an interaction between the trainer, the dog, and a person acting as a model-rival, that is, a model for desired behaviour and a rival for the trainer's attention. In view of the dog, a dialogue concerning a particular toy commenced between the trainer and the model-rival. The trainer praised or scolded the model-rival depending on whether the model-rival had named the toy correctly. It was found that the performance times for completion of the task were similar for dogs trained with either operant conditioning or the model rival method. In addition, the total training time required for task completion was comparable for both methods.[70]
There also behavioral issues that can interfere with successful training. Urine marking is a normal dog behavior in which the animal will hike their leg and mark a certain area or object. With separation anxiety, the puppy may have accidents inside when you leave them at home alone. Some puppies become nervous or upset when their owners are away. Other puppies have a submissive or excitement urination problem. This causes them to spontaneously urinate during certain activities. Discuss these possibilities with your veterinarian or trainer if you're not getting positive results.[23]
The Monks of New Skete, who were breeders and trainers of German Shepherds in Cambridge, New York, published How to Be Your Dog's Best Friend: A Training Manual for Dog Owners in 1978 and it became an immediate best seller. Despite advocating a philosophy that "understanding is the key to communication and compassion with your dog,"[31] they endorsed confrontational punishments which were later shown to elicit dangerously aggressive responses in many dogs.[32]

Be persistent! Make sure the puppy doesn't get the opportunity to pee and poop by using a leash indoors or confining him to a crate when you're out. Depending on the puppies age, pop him outside every 20 - 30 minutes, so there's a greater chance of him toileting outside (by accident at first.) In addition, get rid of any scent markers he's left by peeing or pooping indoors, as these will draw him back to the same spot. This means cleaning the area daily, for 2- 3 weeks after he last pooped there to fully get rid of any lingering odor that the dog can detect.

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!
So, depending on how old he is and the size of your puppy, it’s unrealistic to expect him to be potty trained before this time. It will be helpful to keep in mind that your puppy is only able to hold their bladder 1 hour for every month old he is. So if your puppy is two months old, they can hold it for about two hours. Don’t go longer than this between bathroom breaks or they’re guaranteed to have an accident.
You can use potty training pads to give a puppy a place to go inside. They are usually scented in order attract dogs to urinate on them. This can be an aid in potty training and may seem necessary depending on your situation. But, it can also cause some problems that may prolong the training period and make it more difficult. Using pads can confuse a puppy into thinking that it is OK to go inside.

Pups between the ages of 9–12 weeks who were permitted to observe their narcotics-detecting mothers at work generally proved more capable at learning the same skills at six months of age than control puppies the same age who were not previously allowed to watch their mothers working.[56] A 2001 study recorded the behaviour of dogs in detour tests, in which a favorite toy or food was placed behind a V-shaped fence. The demonstration of the detour by humans significantly improved the dogs' performance in the trials. The experiments showed that dogs are able to rely on information provided by human action when confronted with a new task. Significantly, they did not copy the exact path of the human demonstrator, but adopted the detour behavior shown by humans to reach their goal.[57] A 1977 experiment by Adler and Adler found that puppies who watched other puppies learn to pull a food cart into their cages by an attached ribbon proved considerably faster at the task when later given the opportunity themselves. At 38 days of age, the demonstrator puppies took an average of 697 seconds to succeed, while the observers succeeded in an average of 9 seconds.[58]
If your dog isn’t giving you an obvious signal that they need to go out (like whining at the door) I suggest teaching them to ring a bell when they need to go outside. Some of the other signs dogs give that they need to go out such as pacing around or circling can be easy to miss if they’re in another room, which is why a noise based signal such as ringing a bell can make things easier.
Whenever you’re training your dog, it’s important to get as many family members involved as possible so everyone’s on the same page. If you are telling your dog “off” when he jumps on the couch and someone else is saying “down,” while someone else is letting him hang out up there, how on earth is he ever going to learn what you want? Consistency will be the key to your success.
Clean up any accidents in your house completely with an enzyme cleaner. This is very important because you do not want your pup to smell somewhere he has previously marked because he will return to that spot again and again. And on that note… If Fido has an accident in front of you, and you scold, yell or punish, you will only teach Fido not to take his potty breaks in front of you – Do not punish for accidents.
Non-associative learning is a change in a response to a stimulus that does not involve associating the presented stimulus with another stimulus or event such as reward or punishment.[48] Habituation is non-associative learning. An example is where a dog that reacts excitedly to a door bell is subjected to repeated ringing without accompanying visitors, and stops reacting to the meaningless stimuli. It becomes habituated to the noise.[49] On the other side of habituation is sensitization. Some dogs' reactions to the stimuli become stronger instead of them habituating to the repeated stimuli or event.[50] Desensitization is the process of pairing positive experiences with an object, person, or situation that causes fear or anxiety.[51] Consistent exposure to the feared object in conjunction with rewards allows the animal to become less stressed, thereby becoming desensitized in the process. This type of training can be effective for dogs who are fearful of fireworks.[52]

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]