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.
Sociology of scientific ignorance
In correspondence with knowledge mobilization, which refers to moving available knowledge into use, a concept of 'ignorance mobilization' has been introduced. "Ignorance mobilization can be understood as the use of
ignorance towards the achievement of goals."
This concept also makes a distinction between two types of ignorance: "active" non-knowledge is ignorance that is intentionally or unintentionally taken into account within science; "latent" non-knowledge is ignorance that is not taken into account. The latter more resembles the old view of ignorance, as lack of knowledge. Ignorance mobilization can be said to aim to change latent non-knowledge into active non-knowledge, thereby making it useful for further research.