Letter | Published:

IQ in Japan and the United States shows a growing disparity

Nature volume 297, pages 222223 (20 May 1982) | Download Citation



Evidence from 27 samples indicates that the mean IQ in Japan is higher than in the United States by around one-third to two-thirds of a standard deviation. Analysis of results from the standardization in Japan in 1975 of the new revised version of the American Wechsler Intelligence Scale for Children shows that the Japanese–American disparity in mean IQ has increased during the twentieth century. Among the younger generation the mean Japanese IQ is approximately 111.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1.

    Bull. Br. psychol. Soc. 30, 69 (1977).

  2. 2.

    & Person. Indiv. Diff. 1, 95 (1980).

  3. 3.

    , & Wechsler Intelligence Scale for Children—Revised (Nihon Bunka Kagakusha, (1978).

  4. 4.

    , , , & Lancet i, 1026–1028 (1967).

  5. 5.

    in Human Variation (eds Osborne, R. T., Noble, G. E. & Weyl, N.) (Academic, New York, 1978).

Download references

Author information


  1. Department of Psychology, The New University of Ulster, Coleraine, Co. Londonderry BT52 1SA, UK

    • Richard Lynn


  1. Search for Richard Lynn in:

About this article

Publication history







By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.