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Massive IQ gains in 14 nations: What IQ tests really measure.
Abstract
Data from 14 nations reveal IQ gains ranging from 5 to 25 points in a single generation. Some of the largest gains occur on culturally reduced tests and tests of fluid intelligence. The Norwegian data show that a nation can make significant gains on a culturally reduced test while suffering losses on other tests. The Dutch data prove the existence of unknown environmental factors so potent that they account for 15 of the 20 points gained. The hypothesis that best fits the results is that IQ tests do not measure intelligence but rather a correlate with a weak causal link to intelligence. This hypothesis can also explain differential trends on various mental tests, such as the combination of IQ gains and Scholastic Aptitude Test losses in the United States. Over the last decade, scholars in many countries—largely unknown to one another—have been measuring IQ trends from one generation to the next. In this article their results are collected and analyzed so as to reap the benefits comparative data usually yield. It is also argued that this mass of data poses fundamental problems for developmental psychology, primarily concerning what factors have the most potent effect on IQ, what IQ tests measure, and how IQ tests should be used in making between-groups comparisons.
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“Industrialized nations, while embracing IQ testing in education and employment, have simultaneously experienced a generational rise in IQ scores, a phenomenon known as the Flynn effect (Flynn, 1987(Flynn, , 2011)).”
From Human Intelligence, Creativity, and Wisdom in the Age of Generative Artificial Intelligence (2025) · cites this paper as Flynn, 1987
In the citing paper
“Populations’ mean intelligence test scores have been rising since the beginning of the twentieth century.”
From The secular trend of intelligence test scores: The Danish experience for young men born between 1940 and 2000 (2021) · cites this paper as [2]
In the citing paper
“The data reported by Flynn and others are insufficient to address this question given the limited range of cohorts examined.”
From An Historical Framework for Cohort Differences in Intelligence (2005) · cites this paper as Flynn, 1987
In the citing paper
“Of concern to the study and theory of life-span development is the fact that these assertions were based almost exclusively on differences found between two particular cohorts differing approximately 30 years in age—the massive cohort gains are reported for the post-World War II cohort with most data cited pertaining to those born in the 1950s.”
From An Historical Framework for Cohort Differences in Intelligence (2005) · cites this paper as Flynn, 1987
Citations
Cites
Wechsler Intelligence Scale for Children
Miles-Mason, E. (2018) · Sage eBooks · doi:10.4135/9781483392271.n537 · Cited by 4,133
Scribner, S., & Cole, M. (1981) · doi:10.4159/harvard.9780674433014 · Cited by 3,447
(1980) · DigitalGeorgetown (Georgetown University Library) · Cited by 1,935
The mean IQ of Americans: Massive gains 1932 to 1978.
Flynn, J. R. (1984) · Psychological Bulletin · doi:10.1037/0033-2909.95.1.29 · Cited by 1,206
Self-citationSTANDARDIZATION OF PROGRESSIVE MATRICES, 1938
RAVEN, J. C. (1941) · British Journal of Medical Psychology · doi:10.1111/j.2044-8341.1941.tb00316.x · Cited by 389
Social versus reproductive success: The central theoretical problem of human sociobiology
Vining, D. R. (1986) · Behavioral and Brain Sciences · doi:10.1017/s0140525x00021968 · Cited by 326
Race Differences in Intelligence
Bootzin, R. R., Loehlin, J. C., Lindzey, G. E., & Spuhler, J. N. (1976) · The American Journal of Psychology · doi:10.2307/1421415 · Cited by 307
IQ in Japan and the United States shows a growing disparity
Lynn, R. (1982) · Nature · doi:10.1038/297222a0 · Cited by 256
On the plasticity of intelligence in adulthood and old age: Where Horn and Donaldson fail.
Baltes, P. B., & Schaie, K. W. (1976) · American Psychologist · doi:10.1037//0003-066x.31.10.720 · Cited by 223
Education and Cognitive Development: The Evidence from Experimental Research
Sharp, D. W., Cole, M., Lave, C., Ginsburg, H. P., Brown, A. L., & French, L. A. (1979) · Monographs of the Society for Research in Child Development · doi:10.2307/3181586 · Cited by 223
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Neisser, U., Boodoo, G., Bouchard, T. J., Boykin, A. W., Brody, N., Ceci, S. J., Halpern, D. F., Loehlin, J. C., Perloff, R., Sternberg, R. J., et al. (1996) · American Psychologist · doi:10.1037/0003-066x.51.2.77 · Cited by 2,913
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Raven, J. (2000) · Cognitive Psychology · doi:10.1006/cogp.1999.0735 · Cited by 1,560
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Bouchard, T. J., Lykken, D. T., McGue, M., Segal, N. L., & Tellegen, A. (1990) · Science · doi:10.1126/science.2218526 · Cited by 1,373
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Baltes, P. B., Staudinger, U. M., & Lindenberger, U. (1999) · Annual Review of Psychology · doi:10.1146/annurev.psych.50.1.471 · Cited by 1,281
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Baltes, P. B., Lindenberger, U., & Staudinger, U. M. (2007) · Handbook of Child Psychology · doi:10.1002/9780470147658.chpsy0111 · Cited by 1,240
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Nisbett, R. E., Aronson, J., Blair, C., Dickens, W., Flynn, J., Halpern, D. F., & Turkheimer, E. (2012) · American Psychologist · doi:10.1037/a0026699 · Cited by 1,031
Self-citationIntelligence and socioeconomic success: A meta-analytic review of longitudinal research
Strenze, T. (2006) · Intelligence · doi:10.1016/j.intell.2006.09.004 · Cited by 1,019
Cognitive profile of patients with newly diagnosed Parkinson disease
Muslimović, D., Post, B., Speelman, J. D., & Schmand, B. (2005) · Neurology · doi:10.1212/01.wnl.0000180516.69442.95 · Cited by 1,007
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Markovsky, B. (1996) · Cited by 994
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Rutter, M. L., & Sroufe, L. A. (2000) · Development and Psychopathology · doi:10.1017/s0954579400003023 · Cited by 988
Sternberg, R. J. (1998) · Review of General Psychology · doi:10.1037/1089-2680.2.4.347 · Cited by 946
Biederman, J., Monuteaux, M. C., Doyle, A. E., Seidman, L. J., Wilens, T. E., Ferrero, F., Morgan, C. L., & Faraone, S. V. (2004) · Journal of Consulting and Clinical Psychology · doi:10.1037/0022-006x.72.5.757 · Cited by 881
Campbell, F. A., & Ramey, C. T. (1994) · Child Development · doi:10.1111/j.1467-8624.1994.tb00777.x · Cited by 854
Rönnlund, M., Nyberg, L., Bäckman, L., & Nilsson, L.-G. (2005) · Psychology and Aging · doi:10.1037/0882-7974.20.1.3 · Cited by 839
Ceci, S. J. (1991) · Developmental Psychology · doi:10.1037/0012-1649.27.5.703 · Cited by 837
Wisdom, Intelligence, and Creativity Synthesized
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The Theory of Successful Intelligence
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Howe, M. J. A., Davidson, J. W., & SLOBODA, J. A. (1998) · Behavioral and Brain Sciences · doi:10.1017/s0140525x9800123x · Cited by 727
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Dickens, W. T., & Flynn, J. R. (2001) · Psychological Review · doi:10.1037/0033-295x.108.2.346 · Cited by 663
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Maccoby, E. E. (2000) · Annual Review of Psychology · doi:10.1146/annurev.psych.51.1.1 · Cited by 624
Inequality in the Early Cognitive Development of British Children in the 1970 Cohort
Feinstein, L. (2003) · Economica · doi:10.1111/1468-0335.t01-1-00272 · Cited by 620
Wisdom, intelligence, and creativity synthesized
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Sternberg, R. J. (2004) · American Psychologist · doi:10.1037/0003-066x.59.5.325 · Cited by 583
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Geary, D. C. (1994) · doi:10.1037/10163-000 · Cited by 565
The origin of mind: Evolution of brain, cognition, and general intelligence.
Geary, D. C. (2005) · doi:10.1037/10871-000 · Cited by 551
Geary, D. C. (1995) · American Psychologist · doi:10.1037//0003-066x.50.1.24 · Cited by 511
Searching for justice: The discovery of IQ gains over time.
Flynn, J. R. (1999) · American Psychologist · doi:10.1037/0003-066x.54.1.5 · Cited by 509
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van IJzendoorn, M. H., Juffer, F., & Poelhuis, C. W. K. (2005) · Psychological Bulletin · doi:10.1037/0033-2909.131.2.301 · Cited by 488
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Rohwedder, S., & Willis, R. J. (2010) · Journal of Economic Perspectives · doi:10.1257/jep.24.1.119 · Cited by 434
Hough, L. M., Oswald, F. L., & Ployhart, R. E. (2001) · International Journal of Selection and Assessment · doi:10.1111/1468-2389.00171 · Cited by 429
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LEE, D. Y., Lee, K. U., Lee, H., Kim, K. W., Jhoo, J. H., Kim, S. Y., Yoon, J. C., WOO, S. I., Ha, J. B., & Woo, J. I. (2004) · Journal of the International Neuropsychological Society · doi:10.1017/s1355617704101094 · Cited by 413
der Elst, W. V., van Boxtel, M. P. J., van Breukelen, G., & Jolles, J. (2006) · Journal of Clinical and Experimental Neuropsychology · doi:10.1080/13803390591004428 · Cited by 398
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Ropers, H. (2010) · Annual Review of Genomics and Human Genetics · doi:10.1146/annurev-genom-082509-141640 · Cited by 398
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“An alternate approach, taken by Flynn (1987) and others since (e.g., Sundet et al., 2004, 2008), broadens the perspective from intragroup to intergroup change by focusing on draft board test performance within countries in the practice of administering IQ tests to all young men being assessed for…”
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O’Connor, T. G., Rutter, M., Beckett, C., Keaveney, L., Kreppner, J. M., & the English and Romanian Adoptees Study Team (2000) · Child Development · doi:10.1111/1467-8624.00151 · Cited by 353
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Differentiation of cognitive abilities across the life span.
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Helson, R., Jones, C. J., & Kwan, V. S. Y. (2002) · Journal of Personality and Social Psychology · doi:10.1037/0022-3514.83.3.752 · Cited by 331
Ageing, cognitive abilities and retirement
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Eppig, C., Fincher, C. L., & Thornhill, R. (2010) · Proceedings of the Royal Society B: Biological Sciences · doi:10.1098/rspb.2010.0973 · Cited by 313
RetractedHow heritability misleads about race
Block, N. J. (1995) · Cognition · doi:10.1016/0010-0277(95)00678-r · Cited by 308
Intelligence as Developing Expertise
Sternberg, R. J. (1999) · Contemporary Educational Psychology · doi:10.1006/ceps.1998.0998 · Cited by 308
Singer, T., Verhaeghen, P., Ghisletta, P., Lindenberger, U., & Baltes, P. B. (2003) · Psychology and Aging · doi:10.1037/0882-7974.18.2.318 · Cited by 304
Saigal, S., den Ouden, L., Dieter Wolke, C., Hoult, L., Paneth, N., Streiner, D. L., Whitaker, A. H., & Pinto‐Martin, J. A. (2003) · PEDIATRICS · doi:10.1542/peds.112.4.943 · Cited by 299
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Malamud, O., & Pop-Eleches, C. (2011) · The Quarterly Journal of Economics · doi:10.1093/qje/qjr008 · Cited by 295
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Varnum, M. E. W., & Grossmann, I. (2017) · Perspectives on Psychological Science · doi:10.1177/1745691617699971 · Cited by 294
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Kâğıtçıbaşı, Ç., & Berry, J. W. (1989) · Annual Review of Psychology · doi:10.1146/annurev.ps.40.020189.002425 · Cited by 291
Cohen‐Kettenis, P. T., Owen, A., Kaijser, V. G., Bradley, S. J., & Zucker, K. J. (2003) · Research on Child and Adolescent Psychopathology · doi:10.1023/a:1021769215342 · Cited by 283
Age and individual productivity: a literature survey
Skirbekk, V. (2003) · doi:10.4054/mpidr-wp-2003-028 · Cited by 278
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Meisenberg, G., & Williams, A. (2008) · Personality and Individual Differences · doi:10.1016/j.paid.2008.01.010 · Cited by 271
Colvert, E., Rutter, M., Kreppner, J., Beckett, C., Castle, J., Groothues, C., Hawkins, A., Stevens, S., & Sonuga-Barke, E. J. S. (2008) · Journal of Abnormal Child Psychology · doi:10.1007/s10802-008-9232-x · Cited by 270
Wechsler Intelligence Scale for Children
Olivier, T. W., Mahone, E. M., & Jacobson, L. A. (2017) · Springer eBooks · doi:10.1007/978-3-319-56782-2_1605-2 · Cited by 268
Johnson, S. J., Dieter Wolke, C., Hennessy, E., & Marlow, N. (2011) · Developmental Neuropsychology · doi:10.1080/87565641.2011.540541 · Cited by 259
Charness, N. (2008) · Human Factors: The Journal of the Human Factors and Ergonomics Society · doi:10.1518/001872008x312161 · Cited by 247
Ståhl, T., & van Prooijen, J.-W. (2018) · Personality and Individual Differences · doi:10.1016/j.paid.2017.10.026 · Cited by 245
Caprara, G. V., & Cervone, D. (2000) · Cambridge University Press eBooks · doi:10.1017/cbo9780511812767.006 · Cited by 244
Jones, G., & Schneider, W. J. (2006) · Journal of Economic Growth · doi:10.1007/s10887-006-7407-2 · Cited by 243
Is the Test Score Decline Responsible for the Productivity Growth Decline
Bishop, J. H. (1989) · eCommons (Cornell University) · Cited by 243
Szaflarski, J. P., Schmithorst, V. J., Altaye, M., Byars, A. W., Ret, J., Plante, E., & Holland, S. K. (2006) · Annals of Neurology · doi:10.1002/ana.20817 · Cited by 239
National IQs calculated and validated for 108 nations
Lynn, R., & Meisenberg, G. (2010) · Intelligence · doi:10.1016/j.intell.2010.04.007 · Cited by 238
Intelligence and quality of dietary treatment in phenylketonuria.
Smith, I., Beasley, M. G., & Ades, A. E. (1990) · Archives of Disease in Childhood · doi:10.1136/adc.65.5.472 · Cited by 237
Schooling in adolescence raises IQ scores
Brinch, C. N., & Galloway, T. A. (2012) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1106077109 · Cited by 231
Blair, C., Gamson, D. A., Thorne, S. L., & BAKER, D. (2004) · Intelligence · doi:10.1016/j.intell.2004.07.008 · Cited by 230
Metadata
- Authors
- Flynn, J. R.
- Affiliations
- University of Otago (NZ)
- Corresponding author
- Flynn, James R.
- Venue
- Psychological Bulletin
- Published
- 1987-03
- Volume
- 101
- Issue
- 2
- Pages
- 171-191
- ISSN
- 0033-2909 (ISSN-L)
- 1939-1455
- OpenAlex
- W2063679076
- Cited by
- 1,918
- References
- 30
- Citations by year
- 2026: 27 · 2025: 48 · 2024: 54 · 2023: 39 · 2022: 42 · 2021: 67 · 2020: 48 · 2019: 61 · 2018: 66 · 2017: 62 · 2016: 64 · 2015: 73 · 2014: 84 · 2013: 71 · 2012: 77
- FWCI
- 38.08
- Type
- journal article
- Language
- en
- Update notices
- correction (2008-09-26)
- Open access
- closed
- Locations
- Psychological Bulletin (publishedVersion)
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
- Social Sciences › Sociology and Political Science › Intergenerational and Educational Inequality Studies
- Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
- Keywords
- IQ gains, fluid intelligence, intelligence testing, Scholastic Aptitude Test, developmental psychology
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