Reynolds Interference Task rit

For: Measures complex processing speed in ages 6 to 94 years
Format: Paper-and-Pencil
Length: Individual administration - 2 minutes to administer, 3 minutes scoring time
Scoring: Hand Scored



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Paper Forms and Hand Scoring Materials

Test forms, response booklets and scoring reference manuals.

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RIT Introductory Kit

New in 2017! Includes RIT Professional Manual with Fast Guide, 25 Examiner Record Forms, and Stimulus Book.
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RIT Examiner Record Forms (25)

New in 2017. Pack of 25 forms.
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RIT Professional Manual with Fast Guide

New in 2017.
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RIT Stimulus Book

New in 2017
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Cecil. R. Reynolds, Ph.D, and Randy W. Kamphaus, Ph.D


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 clinicians to measure the effects of TBI, stroke, brain insult or injury, dementia, Alzheimer’s disease, and brain tumours. Alternately, the RIT may be used as a measure of attention and complex processing speed deficits and as a rapid means of measuring recovery from concussion.

Features and Benefits

  • Features two subtests that combine to provide a Total Correct Index, which offers greater coverage, enhanced consistency, and more reliability than a single subtest.
  • Includes reliable change scores and discrepancy scores with the Reynolds Intellectual Assessment Scales, Second Edition (RIAS-2), a trusted measure of intelligence.
  • Covers a wide age range (6 to 94 years) in one test.
  • Requires minimal motor demand.
  • Takes just five minutes to administer and score.

Test structure

  • Comprises two timed subtests-Object Interference (OI) and Colour Interference (CI), which combine to yield a Total Correct Index (TCI).
  • The OI subtest features a grid of pictures of common animals labelled with the name of another animal (e.g., a bird labelled 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 colour words that are printed in a different colour ink (e.g., the word red is printed in blue ink). Examinees are asked to name the colour of the ink, not the colour word.

Technical information

  • Standardised on a normative sample of 1,824 participants from 32 states representative of the 2012 U.S. Census.
  • Co-normed with the Reynolds Intellectual Assessment Scales, Second Edition (RIAS-2), which gives examiners confidence when making comparisons of performance.
  • Data was gathered from 12 clinical groups, including stroke, dementia, intellectual disability, traumatic brain injury, learning disability, attention-deficit/hyperactivity disorder, gifted, and hearing impaired.

“The RIT gives examiners full confidence in making accurate comparisons of performance using highly reliable scores derived from a common sample – it’s the best of all possible psychometric worlds.” – Cecil R. Reynolds, PhD, RIT co-author.

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