Behaviorism involves acting in a particular way. It is an idea that aims to explain learning. Behaviorism as a theory is based on the idea that all types of behavior are accomplished by condition. The condition presents itself through interaction with the environment. According to Kendra Cherry (2002), behaviorists believe that how we respond to environmental stimuli shapes our behavior. In other words, the way one is raised and the person's environment are the elements that shape their behavior. Classical conditioning is a "type of learning" that has had a huge influence on the school of thought in psychology known as behaviorism. It is a learning process that occurs through pairings of two or more types of stimuli. Classical conditioning involves placing a neutral signal in front of a naturally present reflex. In classical conditioning, we have the unconditioned stimulus (UCS), the unconditioned response (UCR), the conditioned stimulus (CS), and the conditioned response (CR). Unconditioned stimulus (UCS) is a stimulus that unconditionally, naturally and automatically. triggers a response. The response occurs automatically without being forced. The conditioned stimulus (CS), on the other hand, is a neutral stimulus that, when it becomes associated with the unconditioned stimulus, will eventually elicit a conditioned response. The conditioned response (CR) in this case will be the learned response to the previously neutral stimulus. Overall, the classical condition emphasizes the importance of learning from the environment, it supports “nurture over nature”. In this essay I will discuss how B.F. Skinner modified Ivan Pavlov's theory of classical conditioning in order to bring... middle of paper......l and then regain his strength. “The fact that conditioned stimulus (CS) – conditioned response (CR) pairs can be established without much difficulty suggests that extinction does not involve the unlearning of associations (Redish, Jensen, Johnson, & Kurth-Nelson, 2007). Pavlov studied the link between stimulus and response. While conducting his research on salivation in dogs, Pavlov noted that his experimental dogs began to salivate only at the sight of food, but eventually at the sound of the metronome that was associated with the food. This observation led him to carry out his famous experiment in which he taught dogs to salivate to the sound of the metronome. After several repetitions of this association, the dog began to salivate to the sound of the metronome even when there was no food in sight (Schunk, 2012, p..79-82).