Representation refers to how any medium portrays aspects of reality, whether through a single image, sequence of images, or entire program. While the media does not present reality directly, it re-presents things that have already occurred through various constructions. Representations aim to invite audiences to understand them in preferred ways, though allowing for some interpretation depending on the viewer. However, representations also implicitly convey ideologies, meanings, and values, giving media institutions great power and responsibility over how they might influence social attitudes. Stereotypes, as an extreme form of representation, are used to help audiences instantly identify meanings but can also exaggerate traits, usually in a negative manner based on assumptions.