The Expressionist movement was popular in the 1910s and 1920s, largely in Germany. It explored the more violent, grotesque aspects of the human psyche, creating a nightmare world onstage. Scenographically, distortion and exaggeration and a suggestive use of light and shadow typify Expressionism. Stock types replaced individualized characters or allegorical figures, much as in the morality plays, and plots often revolved around the salvation of humankind.