In an acting crowd, a sense of excitement that is passed from one person to another is called social contagion. The term social contagion refers to the transmission of beliefs, behaviors, ideas and attitude from one person to another.
In simple words, social contagion means following the behavior of the group or the crowd rather than sticking to one’s personal idea. One of the common examples would be the spreading of fashion trends nowadays. A trend started by an individual soon becomes the style of the crowd contributing to fast fashion.
Social contagion is a kind of imitative behavior.
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