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- Publications
- Influence
Massive IQ gains in 14 nations: What IQ tests really measure.
- J. Flynn
- Psychology
- 1 March 1987
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… Expand
The mean IQ of Americans: Massive gains 1932 to 1978.
- J. Flynn
- Psychology
- 1984
This study shows that every Stanford-Binet and Wechsler standardization sample from 1932 to 1978 established norms of a higher standard than its predecessor. The obvious interpretation of this… Expand
What is intelligence ? Beyond the Flynn effect
- J. Flynn
- 2007
Around their 18th birthday, basically all Dutch males born between 1934 and 1964 unknowingly took part in a study of the malleability of intelligence. When these young men appeared before the Dutch… Expand
Heritability estimates versus large environmental effects: the IQ paradox resolved.
- W. Dickens, J. Flynn
- Psychology, Medicine
- Psychological review
- 1 April 2001
Some argue that the high heritability of IQ renders purely environmental explanations for large IQ differences between groups implausible. Yet, large environmentally induced IQ gains between… Expand
Searching for justice: The discovery of IQ gains over time.
- J. Flynn
- Psychology
- 1999
Humane-egalitarian ideals, whose aims are group justice and reducing environmental inequality and privilege, must be tested against reality, as revealed by psychology and other social sciences. Four… Expand
"Massive IQ gains in 14 nations: What IQ tests really measure": Correction to Flynn.
- J. Flynn
- Psychology
- 1 May 1987
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… Expand
Tethering the elephant: Capital cases, IQ, and the Flynn effect.
- J. Flynn
- Psychology
- 1 May 2006
Capital offenders cannot be executed if they are mentally retarded. Therefore, the IQ scores of offenders are important, and the U.S. 4th Circuit Court of Appeals has held that the Flynn effect is… Expand
Requiem for nutrition as the cause of IQ gains: Raven's gains in Britain 1938-2008.
- J. Flynn
- Psychology, Medicine
- Economics and human biology
- 1 March 2009
The hypothesis that enhanced nutrition is mainly responsible for massive IQ gains over time borrows plausibility from the height gains of the 20th century. However, evidence shows that the two trends… Expand