Because people are profoundly influenced by others' ideas and actions, interactions or communication causes group members' thoughts, feelings and behaviors to become more alike. Whether a judgement task is clear-cut or ambiguous, trival or important, individual members' views converge to form a socal norm. Norms reflect the group's generally accepted way of thinking, feeling, or acting. Descriptive social norms are what people think, feel, or do whereas injunctive norms specify what people should think, feel, or do.