The spiral of silence theory is a political science and mass communication theory proposed by the German political scientist Elisabeth Noelle-Neumann. It states that an individuals perception of the distribution of public opinion influences that individuals willingness to express their own political opinions. The main idea is that people have an influence on each other's willingness to express opinion through social interaction. According to the spiral of silence theory, individuals will be more confident and outward with their opinion when they notice that their own personal opinion is shared throughout a group, but if the individual notices that their opinion is unpopular with the group they will be more inclined to be more reserved and remain silent. The individual "not isolating himself is more important than his own judgement". This is a self-expressive act that can change the "global environment of opinion", shifting the perceptions of others and the willingness of individuals to express their own opinions.

According to Glynn (1995), "the major components of the spiral of silence include (1) an issue of public interest; (2) divisiveness on the issues; (3) a quasi-statistical sense that helps an individual perceive the climate of opinion as well as estimate the majority and minority opinion; (4) "fear of isolation" from social interaction; (5) an individual's belief that a minority (or "different") opinion isolates oneself from others; and (6) a "hardcore" group of people whose opinions are unaffected by others' opinions."

Background