Reaction Time is designed to assess subjects speed of processing on three relatively simple tasks. Tasks include a simple reaction time test, a choice test, and a conditional choice test. Participants are shown a series of visual stimuli on a computer screen and asked to respond by pulling an appropriate trigger on a standard game pad. Both reaction time and the trigger pulled are recorded for subsequent analysis. Tasks to be used in the test, the average inter-stimulus interval and the number of stimuli presented for each task can be set by the investigator. The analysis includes means and standard deviations for response latencies for a single session, as well as the capability of evaluating a participants performance on a particular session against their performance on a series of sessions. Shown above is an example of a conditional choice test stimulus in which the participant would be expected to press the left trigger.
This test requires the use of a game pad that supports at least four buttons and provides a right and left trigger button. We have tested several different brands of inexpensive game pads and have found them acceptable, however we have standardized on Microsoft’s SideWinder™ and have used it in collecting the normative data for this test.
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CATs SOPT Tower of London Visual Span Card Sort Reaction Time n-Back Repeat Symptom Validity
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