Representation theory examines how people, places, and objects are presented to audiences through various mediums. Stereotypes are representations of groups that simplify their characteristics and become symbolic of that group over time, though they may contain truths. Dominant ideologies in a society, which serve the interests of ruling classes according to Marxist theory, also influence how groups are represented. A theorist proposed that celebrity images are constructed through various materials like advertising and magazines, rather than representing real people. Gender representation theory examines how women are often portrayed through a male gaze in media and stereotypical ways that emphasize their beauty, sexuality, or mothering roles rather than as fully realized people.