A television reality show features talent culled from the ranks of 'ordinary' people, not professionally trained actors. Reality show producers typically shoot hundreds of hours of footage per episode and use creative editing to create a narrative thread. Subjects of a reality show may be given some rudimentary directions offscreen, but the point is to allow the performers to act and react as normally as possible. A reality show is not to be confused with a documentary, in which the subjects are asked to ignore the cameras and behave naturally. Many reality show producers encourage participants to play to the cameras as characters or use private taped conversations, called confessionals, as a form of narration.
For many years, the television industry favored scripted television programs over the unpredictable and potentially litigious reality show form. An early reality show called Candid Camera, hosted by the unassuming Allen Funt, demonstrated that carefully edited clips of ordinary people reacting to contrived situations could be a ratings success. Early game shows featuring contestants selected from the audience also provided moments of unscripted reality. Groucho Marx's game show You Bet Your Life! featured extended interviews with ordinary contestants, although Marx was thoroughly briefed on their backgrounds before the show started.
Television shows during the 1960s and 1970s were usually scripted, with a cast of professional actors creating the characters. It was believed that a reality show featuring untrained actors working without a guiding script would be virtually unwatchable. There would be no way to create a satisfying storyline ending precisely after the allotted half-hour or hour running time of a typical scripted show. The only network amenable to the idea of a true reality show in the 1970s was the Public Broadcasting System (PBS). A documentary called An American Family followed the real lives of the Loud family as they