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The subjects are given a brief description of the experiment, fill a subject background questionnaire, and sign a consent form. Then, they are asked to read general instructions of the experiment which included the task schedule. They are also instructed on issues like timing, questions, tasks, etc. Following that, subjects are given training for the interface they are going to use next, and are allowed to do the practice tasks. The experiment takes about an hour including the training and practice tasks. Subjects are free to ask any questions during the training session and before starting each task during the experiment.

Eser Kandogan
Sun Sep 13 18:34:46 EDT 1998

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