In his study, he used a real curtain to separate test users from the human controlling the system they interacted with.ĭuring these early studies, natural-language technologies were in their infancy. It wasn’t until 1983 that Jeff Kelley first coined the term Wizard of Oz for the method, while doing his dissertation on natural-language user interfaces at Johns Hopkins University. The study helped the researchers collect a sample of dialogs that a real automated travel assistant should be able to handle. ![]() ![]() ![]() Unknown to participants, a human responded to their queries behind the scenes, using resources that included travel information pamphlets, airline guides, and a calendar. In this study, they asked test participants to use computer terminals offering automated travel assistance. The method’s origins trace back to a 1975 study conducted by Allen Munro and Don Norman at UC San Diego. ![]() The name of this method makes reference to the 20th century American children’s book “The Wonderful Wizard of Oz” by Frank Baum, in which the characters meet a giant head that appears to be a powerful wizard, only to learn that it’s just an ordinary man pulling levers behind a screen.Īppropriately, in this research method, a human interacts with an interface that is controlled by a human “behind the curtain.”ĭefinition: The Wizard of Oz method is a moderated research method in which a user interacts with an interface manned by a human who controls the system responses.
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