1981 · DAVID WECHSLER · 9 SOURCES

WAIS-R: Older adults, or older norms?

Twenty-five years after the first adult Wechsler came a fresh yardstick. WAIS-R kept its eleven subtests, then set scores from a stratified group aged 16 to 74. That leaves a hard question behind the numbers: when an older group scores lower, has ability changed: or has the reference generation changed?1,4,3

Sex
Race (white, non-white)
Geographic region
Occupational group
Educational attainment
Urban or rural residence
The six variables used to stratify the 1,880-person sample4

Mostly the same test, measured against new people

1,880people in the norm sample, aged 16 to 744
6 + 5verbal and performance subtests, the same eleven as before9
≈80%of the original items kept, with an attempt to make it more culturally fair7
1976–80four years of development before release4
60–90 minto give the full scale5
Age 16shared with the WISC-R, so examiners could give either test4
SAMPLE SIZEMost sources give 1,880 people; two teaching summaries say 1,800.4,8,5,7 Our timeline's claim that the WAIS-R was "the dominant US adult test until 1997" isn't stated in these sources.

Is the drop with age real?

On this version, the 66-year-olds came in 6.4 IQ points below the 16-year-olds when all eleven subtests were averaged. A separate estimate put the generational gain across that fifty-year span at 14.1 points. On that account, the age gap disappears.1

Kaufman came out elsewhere. He lined up people from the same birth cohorts who had been tested 25 years apart and still saw decline, especially on nonverbal work. Adjusting for education and rising scores left that result standing.3

Age difference in scores−6.4
Estimated Flynn effect, same 50 years−14.1
IQ points, 16- vs 66-year-olds, from one analysis of the WAIS-R1
EXPLORE · 70- TO 74-YEAR-OLDS, 1955 TO 2008

Same age, four norm samples

Four editions, each showing people aged 70 to 74. The scores stay on the young-adult scale, not an age-corrected one. Choose a measure to see whether later cohorts arrive higher.

80SD 12.5
82SD 10.5
85SD 13
86SD 13
WAISn = 80WAIS-Rn = 160WAIS-IIIn = 200WAIS-IVn = -
Full Scale IQ: 80 in 1955 → 86 in 2008, a rise of 6 IQ points for the same age group.

Figures from Miller (2009), who derived age-uncorrected means for the 70–74 groups.3 Sample sizes are given for 1955, 1981 and 1997 only.

What the 1997 edition changed

Larger, older sampleThe 1997 WAIS-III was normed on 2,450 people aged 16 to 89.6
Co-normed memoryDeveloped and co-normed with the Wechsler Memory Scale, third edition.6
Four indexesAdded Verbal Comprehension, Working Memory, Perceptual Organization and Processing Speed indexes alongside the IQs.5
Age-corrected indexesIndex scores were corrected for age for the first time.3

References

  1. [1]Agbayani, K. A. Patterns of age-related IQ changes from the WAIS to WAIS-III after adjustment for the Flynn effect. University of Houston (PDF).uh-ir.tdl.org
  2. [2]Age differences and educational attainment across the life span on three generations of Wechsler adult scales (2016). Journal of Psychoeducational Assessment, 34(5), 421–441 (PDF).uva.theopenscholar.com
  3. [3]Miller, L. S. et al. (2009). Changes in intellectual functioning associated with normal aging. Montana Legislature archive (PDF).archive.legmt.gov
  4. [4]Master's thesis on the WISC-R and WAIS-R. Western Michigan University ScholarWorks (PDF).scholarworks.wmich.edu
  5. [5]The Wechsler Adult Intelligence Scale (WAIS). SlideShare presentation.slideshare.net
  6. [6]Wechsler Adult Intelligence Scale: an overview. ScienceDirect Topics (Medicine and Dentistry).sciencedirect.com
  7. [7]Kaufman, A. S., McLean, J. E., & Reynolds, C. R. (1988). Sex, race, residence, region, and education differences on the 11 WAIS-R subtests. Journal of Clinical Psychology, 44(2), 231-248.doi.org
  8. [8]Ryan, J. J., Paolo, A. M., & Brungardt, T. M. (1990). Standardization of the Wechsler Adult Intelligence Scale-Revised for persons 75 years and older. Psychological Assessment, 2(4), 404-411.doi.org
  9. [9]Wechsler Adult Intelligence Scale (WAIS). IQ Test Prep.iqtestprep.com
HOW TO CITE THIS PAGE
What's Your IQ. (2026). WAIS-R (1981): Wechsler Adult Intelligence Scale – Revised. In Historical IQ Tests Archive. Retrieved September 30, 2026, from /en/historical-iq-tests/wais-r-1981
EDITORIAL RECORD
First published2026
Last reviewed30 September 2026
Sources9, all from visible search results
Open questions1,880 vs 1,800 sample; "dominant until 1997" claim; ageing vs Flynn interpretation
Canonical URLwhats-your-iq.com/en/historical-iq-tests/wais-r-1981

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