The RIT is a Stroop-style test of complex processing speed that measures general neuropsychological integrity. It adds a layer of cognitive processing tasks—inhibition and attention-shifting—to simple tasks, which makes them more complex and thus more indicative of cognitive flexibility and selective attention.
The mental effort required for the RIT allows clinicans to measure the effects of TBI, stroke, brain insult or injury, dementia, Alzheimer's disease, and brain tumors. Alternately, the RIT can be used as a measure of attention and complex processing speed deficits and as a rapid means of measuring recovery from concussion.
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