Si les journalistes cherchaient de l'information vérifiée au lieu de rêver, ils sauraient que l'inversion de l'effet Flynn est bien étudiée et documentée par les chercheurs.http://www.sciencedirect.com/science/article/pii/S0191886916310984
Future IQ changes are linked to past cognitive development and expected demographic changes, which permit predictions of future development at the country level (e.g., + 0.45 to + 0.76 IQ points per decade in the US; Rindermann & Pichelmann, 2015). Demographic changes may be linked to genetic effects, which are influenced by asymmetric birth rates in modern populations (e.g., Lynn, 2011 and Nyborg, 2012). Negative genetic effects on intergenerational changes in ability are plausibly linked to: (a) parent-children correlations in intelligence (for individuals about r = 0.40 to 0.50; Plomin, DeFries, Knopik, & Neiderhiser, 2013, p. 76), (b) the well established theory that intelligence is not only transmitted via family environment but also via genes (backed by twin research; Plomin et al., 2013) and (c) better educated and more intelligent adults having fewer children (e.g., Loehlin, 1997). If these three statements are correct, negative genetic effects on intergenerational intelligence development are a logically compelling consequence. Such negative effects may be aggravated, if migration produces brain drain in developing countries, which occurs when high ability people in developing countries immigrate to developed countries (e.g., Kapur & McHale, 2005), or if low ability people (relative to the level in destination countries) immigrate to developed countries, a pattern observed in the West over the last decades (e.g., Rindermann & Thompson, 2016).