The teacher tells her she did a very good job and he smiles giving her positive reinforcement for her behavior. 학생은 선생님이 잘했다는 말을 들었을 때 기분이 좋았고 다시 잘하고 싶다는 생각이 들었다고 설명합니다. By Keith Connor, Chesley Cypert, and Anne Meyers.