Behavior is defined as a way of conducting oneself. Behavior is the way human beings and other organisms act. Most human behavior comes from a combination of different things. Psychology is the scientific study of the mind and its functions. Behaviorism studied behavior directly. Their practices were heavily based on introspection, which helped with the treatment process. Watson based his work on “Stimulus-Response Psychology. This type of psychology only looks at the relationship between the stimulus and the response. Watson was able to measure behavioral responses without ever having to look at cognitive processes or emotions. By only focusing on behavior, Watson was only capable of predicting cause and effect.