L’immigration massive de populations génétiquement moins intelligentes diminue progressivement le Q.I en France (et en Europe).
https://edwarddutton.files.wordpress.com/…/07/franceiq.pdf
“it might be that the increase in the numbers of immigrants with lower IQs in the French population may explain the decline.
This increase has occurred throughout western Europe and a number of studies have shown that immigrants from North Africa and southwest Asia typically have an average IQ of around 85 to 90 (Lynn, 2006, 2008; Lynn & Vanhanen, 2012; Rindermann & Thompson, 2014; for a large meta-analysis see te Nijenhuis, de Jong, Evers, & van der Flier, 2004).”