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Wizard of Oz experiment
In the field of human-computer interaction, a Wizard of Oz experiment is a research experiment in which subjects interact with a computer system that subjects believe to be autonomous, but which is actually being operated or partially operated by an unseen human being.〔Bella, M. & Hanington, B., 2012. Universal Methods of Design, Beverly, MA: Rockport Publishers. p204〕
== Concept ==
The phrase ''Wizard of Oz'' (originally ''OZ Paradigm'') has come into common usage in the fields of experimental psychology, human factors, ergonomics, linguistics, and usability engineering to describe a testing or iterative design methodology wherein an experimenter (the “wizard”), in a laboratory setting, simulates the behavior of a theoretical intelligent computer application (often by going into another room and intercepting all communications between participant and system). Sometimes this is done with the participant’s a-priori knowledge and sometimes it is a low-level deceit employed to manage the participant’s expectations and encourage natural behaviors.
For example, a test participant may think he or she is communicating with a computer using a speech interface, when the participant’s words are actually being secretly entered into the computer by a person in another room (the “wizard”) and processed as a text stream, rather than as an audio stream. The missing system functionality that the wizard provides may be implemented in later versions of the system (or may even be speculative capabilities that current-day systems do not have), but its precise details are generally considered irrelevant to the study. In testing situations, the goal of such experiments may be to observe the use and effectiveness of a proposed user interface by the test participants, rather than to measure the quality of an entire system.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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