— Important to note that even though this decline was partly reversed by the Germanic migrations of Late Antiquity, polygenic scores still have yet to return to levels seen previously during the Republican Period, where Rome was still homogenous.
This shows the long term, semi-permanent effects that foreign immigration and consequent admixture has on a population, especially from places with low-to-average intelligence.
⚡️ @FolkishObserver
Our comparison of contemporary genomes from central Italy have demonstrated that polygenic scores have not significantly altered from the Middle Ages to the present day. During the Republican period however, polygenic scores were higher than they are now, nearly one full standard deviation higher.
This shows the long term, semi-permanent effects that foreign immigration and consequent admixture has on a population, especially from places with low-to-average intelligence.
⚡️ @FolkishObserver