The challenge for a teacher is to understand what establishes reinforcement and punishment for each child and then very precisely target desirable and undesirable behavior. This method is known as a contingency contract. Skinner emphasized the importance of generalized reinforcers such as praise, stars, and points. He also believed that punishment should be avoided; extinction, i.e. ignoring, is the way to remove inappropriate behavior. Of course, classical conditioning would suggest maintaining a positive environment, or the opportunity arises for pupils to develop a negative attitude towards a subject due to unkind feelings associated with the way it was learned. Example "A child is in a school classroom. When he is silent (reading or drawing), the teacher does not pay attention to him. He throws a paper ball to another child. The teacher expresses this. He begins to read, but after a while he throws something again. The teacher pays attention for him. In the end, he throws things often." (p. 53 Greene and Hicks, 1984) The child obviously does not find scolding a punishment, but rather a reward because it establishes a form of attention/consideration. In a classroom where the teacher uses reinforcement or punishment effectively, we have to see: 1-The required behavior is rewarded quite precisely, perhaps through