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I am between the ages of 18 and 60 years old
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I have not been diagnosed with a disorder that is associated with impaired reaction time or movement control
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I have not been diagnosed with a sleep disorder (e.g., insomnia, narcolepsy)
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I do not experience chronic fatigue (i.e., persistent, extreme fatigue that makes it difficult to function)
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I have normal vision or vision that is corrected by glasses or contacts