Improvisational comedy—“improv”—is a form of theater, typically performed by two or more actors, in which the story, including setting, plot, characters, and dialogue, are made up in the moment, often following a suggestion from the audience.1 Improv is, by definition, extemporaneous or off-the-cuff. In contrast, standup comedy consists of scripted, often carefully rehearsed performances by an individual actor.
Misch DA. I Feel Witty, Oh So Witty. JAMA. 2016;315(4):345–346. doi:10.1001/jama.2015.16758
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