Final answer:
The dog biscuit given to the dog after it barks on command is an example of positive reinforcement, which is used to increase a behavior by adding a desirable stimulus.
Step-by-step explanation:
When a dog barks on command and is given a dog biscuit, the biscuit acts as a positive reinforcement. By definition, positive reinforcement involves the addition of a desirable stimulus to increase a behavior. In this case, the dog learns to associate the act of barking on command with the reward of a biscuit, increasing the likelihood that the dog will bark on command in the future.
The concepts of positive reinforcement and negative reinforcement are part of operant conditioning, a method of learning that employs rewards and punishments for behavior. Over time, these reinforcement strategies can teach pets, like dogs and dolphins, to repeat specific actions that result in rewards, such as treats or food. Consequently, reinforcement is an effective tool for training animals to perform desired behaviors.