Behaviorism can also be thought of as a form of classroom management. Behaviorists believe human beings are shaped entirely by their external environment. If you alter a person's environment, you will alter his or her thoughts, feelings, and behavior. The system is based on rewards and punishments. Behaviorists believe that if teachers provide positive reinforcement, or rewards, whenever students perform a desired behavior, they will learn to perform the behavior on their own. The same concept applies to punishments. Behaviorists think people act in response to internally or externally generated physical stimuli. They basically consider human nature to be the product of one's environment. An example of behaviorism is when teachers reward their class or certain students with a party or special treat at the end of the week for good behavior throughout the week. The same concept is used with punishments. The teacher can take away certain privileges if the student misbehaves.