Measuring inconsistency between preference and action under cascade behavior

The cascades phenomenon is an important theme in the social sciences. It is the phenomenon that the people act contrary to onepsilas own preference. It is the reason why many people make decision that imitated others behavior. It is becoming more and more important in information technology because of ranking-system on the Internet or diffusion of collaborative filtering. In this research, we make the modeling sequential decision making by many agents. And we reveal mechanism that the cascades phenomena is happen from relationship strength of the social pressure and individual preference. These two things is important factor when people make decision. We obtain conditions which the cascades phenomenon is happen and the size of it by innovating agent which decision making like contrary persons.