The behaviorist perspective derives from Ivan Pavlov's famous experiment with dogs. Pavlov's experiment consisted of ringing a bell each time he fed the dogs he was observing. Eventually the dogs began to salivate each time they heard the bell ring, even when they were not given food. They associated the bell with the gratification that comes with eating. Pavlov's experiment paved the way for other notable psychologists, such as John Watson, who is considered the true father of behaviorism.