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Intelligence and the Flynn Effect

This metric of attitudes toward children is especially noteworthy because, given the rising intelligence across the decades, children today are more intelligent than children of the past, a trend continuing in the United States.
- John Protzko and Jonathan W. Schooler, Kids these days: Why the youth of today seem lacking, Science Advances, Vol. 5, no. 10, 16 Oct 2019


As noted by two of the reviewers, the magnitude of the negative Flynn trend in our data itself speaks against the dysgenic hypothesis for retrograde Flynn effects, as changes in IQ over time are too large to plausibly reflect selection-driven genetic change in the population.
- Bernt Bratsberga and Ole Rogeberg, Flynn effect and its reversal are both environmentally caused, Proc Natl Acad Sci U S A. 2018 Jun 26; 115(26): 6674–6678.



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