There's also the apparent reversal of the Flynn effect in recent years: https://www.popularmechanics.com/science/a43469569/american-iq-scores-decline-reverse-f

There's also the apparent reversal of the Flynn effect in recent years: https://www.popularmechanics.com/science/a43469569/american-iq-scores-decline-reverse-flynn-effect/ https://www.popularmechanics.com/science/a43469569/american-... https://news.ycombinator.com/item?id=35511744 https://news.ycombinator.com/item?id=35511744