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Home/Historical IQ Tests/RIAS
2003 · CECIL R. REYNOLDS & RANDY W. KAMPHAUS · 9 SOURCES

Four subtests. One g.

The RIAS was designed to be practical, cost-efficient and quick, and to measure general intelligence across the whole lifespan, from age 3 to 94. For most school-age children it takes 25 to 35 minutes.1,7

Build a battery →Cite this page
VERBALGuess What
VERBALVerbal Reasoning
NONVERBALOdd-Item Out
NONVERBALWhat's Missing
EXPLORE · FROM SCREENER TO FULL BATTERY

How much do you give, and what do you get?

Pick a configuration to see which subtests are given and which indexes they produce.

VERBALGuess What
VERBALVerbal Reasoning
NONVERBALOdd-Item Out
NONVERBALWhat's Missing
MEMORYVerbal Memory
MEMORYNonverbal Memory
RIAS-2 ONLYSpeeded processing ×2
Produces:
VIXNIXCIX
The core battery.Four intelligence subtests. The two verbal ones give the Verbal Intelligence Index, the two nonverbal ones the Nonverbal Intelligence Index, and all four the Composite Intelligence Index, its estimate of g.1

Built on familiar formats, checked for fairness

ContinuityDesigned so the same measure could be used at every developmental level, from preschool to old age.1
All four load on gThe authors reported that each of the four intelligence subtests is a good measure of general intelligence.1
.98–.99Congruence of the factor structure across gender and ethnicity, well above the .90 criterion.1
Familiar formatsIts six original subtests used formats common in intelligence testing, so examiners found them instantly familiar.7

Three sets of norms

2003RIAS and RISTThe first edition and its screener, normed on 2,438 people aged 3 to 94.6
2015RIAS-2 and RIST-2Kept the six original subtests with updated items, standardized in 2013–14, and added speeded-processing subtests.4
UpdateRIAS-2 NUA normative update. The four-subtest core still gives a highly reliable estimate of g.3

Sources differ on the normative update: one ties it to 2023 US census data, another dates the re-norming to 2026. The RIAS-2's upper age is also given as both 94 and 93:11.3,6,4

References

  1. [1]RIAS-2 and WASI-II (thesis). Eastern Illinois University, The Keep.thekeep.eiu.edu
  2. [2]Wikipedia contributors. Reynolds Intellectual Assessment Scales (accessed 30 Sept 2026).en.wikipedia.org
  3. [3]RIAS-2 NU: Reynolds Intellectual Assessment Scales, Second Edition, Normative Update. PAR.parinc.com
  4. [4]RIAS-2: guidance on using the battery within a diagnostic assessment. SASC (December 2023, PDF).sasc.org.uk
  5. [5]What is the RIAS test? Riot IQ (2026).riotiq.com
  6. [6]RIAS-2: Reynolds Intellectual Assessment Scales. Cogn-IQ encyclopedia entry (2026).cogn-iq.org
  7. [7]Reynolds, C. R., & Kamphaus, R. W. The RIAS and assessment of intellectual giftedness. ResearchGate.researchgate.net
  8. [8]A scientist/practitioner's perspective of the RIAS-2 (2016). Journal of Pediatric Neuropsychology. Springer.link.springer.com
  9. [9]Reynolds Intellectual Screening Test, 2nd Ed (RIST-2). Schoolhouse Educational Services.schoolhouseeducationalservices.com
HOW TO CITE THIS PAGE
What's Your IQ. (2026). Reynolds Intellectual Assessment Scales (2003). In Historical IQ Tests Archive. Retrieved September 30, 2026, from /en/historical-iq-tests/rias-2003
EDITORIAL RECORD
First published2026
Last reviewed30 September 2026
Sources9, all from visible search results
Open questionsDate of the normative update (2023 census vs 2026); upper age 94 vs 93:11
Canonical URLwhats-your-iq.com/en/historical-iq-tests/rias-2003

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An earlier quick test1963
Slosson Intelligence Test

Another brief individual IQ test with a wide age range. Slosson's was verbal only; the RIAS balances two verbal and two nonverbal subtests.

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The long-form benchmark1955
Wechsler Adult Intelligence Scale

The WAIS takes far longer and yields many scores. The RIAS aims to estimate g in a fraction of the time.

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The RIAS adds co-normed verbal and nonverbal memory subtests. The CVLT examines verbal memory in far more depth.

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Part of the Historical IQ Tests Archive. Editorial content under CC BY-SA 4.0. RIAS is published by PAR; no test items are reproduced.
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