Classical conditioning was a phenomenon that a man named Ivan Pavlov explored in the 20th century. His work laid the foundation for many other psychologists such as John Watson. Pavlov's idea came to him when he noticed a chance observation. He noticed that putting food in a dog's mouth caused salvation. However, the dog not only salivated at the food, he also started salivating at the mere sight of the food or dish of food. He began to experiment; He first swiped the presented food by sliding the food bowl and blowing meat powder into the dog's mouth at the same precise moment. They associated it with a neutral stimulus event that the dog could see but did not associate it with food (Myers, 2014, p.256). Food in the mouth automatically and unconditionally triggers the salivary reflex. Pavlov called drooling an unconditioned response and food an unconditioned stimulus. The greeting in response to a tone is learned, it is conditioned by the fact that dogs associate the tone with food, this is called a conditioned response (Myers, 2014, p.256). The stimulus that was neutral is the conditioned stimulus. I found this interesting and related to everyday life because my dog ​​often does the same thing. We keep 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 a conditioned response. While,