Reynolds Interference Task™

Authors: Cecil R. Reynold, Phd, Randy W. Kamphaus, PhD
Purpose: Measures complex processing speed
Format: Paper and pencil
Age range: 6 years to 94 years
Time: 5 Minutes Total Including Scoring
Qualification Level C

Qualification Level: C Click For More Qualification Level Information


The Reynolds Interference Task™ 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 clinicians 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.

Additional details:

  • Comprises two timed subtests—Object Interference (OI) and Color Interference (CI), which combine to yield a Total Correct Index (TCI).
  • The OI subtest features a grid of pictures of common animals labeled with the name of another animal (e.g., a bird labeled as a horse). The examinee must name the animal under the word, ignoring the label on the picture.
  • The CI subtest features a grid of color words that are printed in a different color ink (e.g., the word red is printed in blue ink). Examinees are asked to name the color of the ink, not the color word.
  • Standardized on a normative sample of 1,824 participants from 32 states representative of 2012 U.S. Census statistics.

Reynolds Interference Task™ is standardized on a normative sample of 1,824 participants from 32 states. Data were gathered from 12 clinical groups, including stroke, dementia, intellectual disability, traumatic brain injury, learning disability, ADHD, gifted, and hearing impaired.

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