Classical conditioning was a phenomenon that a man named Ivan Pavlov explored in the twentieth century. His work laid the foundation for many other psychologists such as John Watson. Pavlov's idea came when he caught a chance observation. He noticed that putting food in a dog's mouth caused salvation. However, the dog not only salivated at the food, but began to salivate at the mere sight of the food, or the plate of food. He began to experiment; first he slipped the food by sliding the food bowl and blowing the meat powder into the dog's mouth at the exact same time. They paired it with a neutral stimulus event that the dog could see but did not pair it with food (Myers, 2014, p.256). Food in the mouth automatically and unconditionally activates the salivary reflex. Pavlov called drooling the unconditioned response and food the unconditioned stimulus. Rescue in response to a tone is learned, it is conditioned on the fact that dogs associate the tone with food, it is called a conditioned response (Myers, 2014, p.256). The stimulus that was neutral is the conditioned stimulus. I found it interesting and related to everyday life because my dog ​​often does the same. We store his food in the garage, so opening the garage door would be the conditioned stimulus. As soon as the garage door opens, my dog ​​starts salivating, which is the conditioned response. While,