Your psychology professor finishes up her lecture and asks if anyone has any questions. no one raises a hand. you were hopelessly confused by the lecture, but assume everyone else must have understood it since no one asked anything. later, you find out that your friends in the class were also confused but each thought he or she was the only one. social psychologists would call this confusion a consequence of

Social psychologists would call this confusion a cosequence of pluralistic ignorance

Explanation:

Pluralistic ignorance is a situation in which most members of a group privately reject a rule, but go along with it since they incorrectly assume that most others accept it. This is also described as "no one believes, but everyone thinks that everyone believes". In a nutshell, pluralistic ignorance is a bias about a social group, supported by the members of that social group.