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Reynolds Intellectual Assessment Scales, Second Edition

Cecil R. Reynolds, PhD, and Randy W. Kamphaus, PhD

Assesses intelligence and its major components
Paper and pencil, Online scoring via PARiConnect, E-Manual, Download
Age range:
3 years to 94 years
20–25 minutes for Intelligence assessment; 10–15 minutes for Memory assessment; 5–10 minutes for Speeded Processing assessment
Qualification level:
All qualifications for Level B plus an advanced professional degree that provides appropriate training in the administration and interpretation of psychological tests, or license or certification from an agency that requires appropriate training and experience in the ethical and competent use of psychological tests. Close

Learn more about how the RIAS-2 helps school psychologists save time and reach more students in our new infographic! Click the Resources tab above or here to view or download.

The RIAS-2 retains all the features that made the original instrument so popular and gives practitioners even more reason to trust this instrument. It offers a full IQ battery for less time and less cost than similar measures.

Now available! Our new In-Person e-Stimulus Books and Kits are convenient, more hygienic alternatives to paper administration that allow you to administer the RIAS-2 and RIST-2 face-to-face via tablet. Be sure to download our new white paper prior to administering.

Interested in assessing your clients or students remotely? The new RIAS-2/RIST-2 Remote enables you to administer using minimally modified test materials and your videoconferencing platform. Visit the RIAS-2 Remote product page to order. A white paper investigating the equivalence of remote, online administration and traditional face-to-face administration of the RIAS-2 can be found under the Resources tab above.

Features and benefits

  • Can be used as a stand-alone intellectual assessment or as part of a larger battery to diagnose specific disorders, such as intellectual disabilities or learning disabilities, and as a way to determine educational placement.
  • All four core and two memory subtests from the original RIAS were retained; however, individual harder and easier items were added to provide greater range, and other items were revised to allow for more up-to-date and acceptable responses.
  • Two supplemental speeded processing subtests (one verbal, one nonverbal) combine to create the Speeded Processing Index (SPI).
  • Requires low motor demand.
  • Optional memory and speeded processing subtests are available.
  • By popular demand, all basal and ceiling rules for the subtests are more conservative, are consistent with one another, and allow for more accurate assessment at the lowest and highest ability level.
  • Ability–achievement discrepancies with the Academic Achievement Battery (AAB) are provided. A combination kit is available.

Technical information

  • Normative data are based on a sample of 2,154 individuals ages 3-94 years from 32 states representative of 2012 U.S. Census statistics.
  • Data were gathered from the following 12 clinical groups: stroke, dementia, hearing impaired, intellectual disability disorder (child and adult), TBI (child and adult), learning disabilities (child and adult), ADHD (child and adult), and gifted.
  • Percentile ranks, 90% and 95% confidence intervals, T scores, z scores, NCEs, and stanines are available for index scores.
  • Internal consistency studies associated with RIAS-2 indexes exceed .90 across age groups.
  • RIAS-2 indexes correlated highly with RIAS indexes, providing support for the consistency of item content and performance between the original measure and this revision.
  • Criterion-related validity was assessed by examining correlations between the RIAS-2 indexes and the WISC-IV, WAIS-IV, WPPSI-IV, AAB, FAR, and ChAMP. All correlations were found to be in the strong and as expected.