Pluralistic ignorance
Pluralistic ignorance can be contrasted with the false consensus effect. In pluralistic ignorance, people privately disdain but publicly support a norm (or a belief), while the false consensus effect causes people to wrongly assume that most people think like they do, while in reality most people do not think like they do (and express the disagreement openly). For instance, pluralistic ignorance may lead a student to drink alcohol excessively because she believes that everyone else does that, while in reality everyone else also wishes they could avoid binge drinking, but no one expresses that due to the fear of being ostracized. A false consensus for the same situation would mean that the student believes that most other people do not enjoy excessive drinking, while in fact most other people do enjoy that and openly express their opinion about it.
Spiral of silence
Individuals use what is described as "an innate ability" or quasi-statistical sense to gauge public opinion. People assume they can sense and figure out what others are thinking.
Pluralistic ignorance may occur in some cases, leading to the minority opinion to be accepted as a norm. Group members may be privately rejecting a norm, but may falsely assume that other group members accept it. This phenomenon may cause a group to hold on to a norm.