Sure, it's a fairly recent discovery. Like you know of course the Flynn effect was the observation that 'real' IQs were increasing over time. They're always nor

Sure, it's a fairly recent discovery. Like you know of course the Flynn effect was the observation that 'real' IQs were increasing over time. They're always normalized such that the mean is 100 with a 15 point standard deviation, but that 100 market kept representing a higher and higher 'real' score. This has been observed to have reversed in many developed nations. By reversed it's not like it's reaching an asymptotic zero rate of growth, but genuinely decreasing. This was first observed in Scandinavian countries in the mid nineties. Outside of Scandinavia this decline has been corroborated in at least the UK, Australia, Germany, France, and the Netherlands. It's probably reasonable to hypothesize that the reason it's yet to be corroborated elsewhere is a mix of the lack of testing or a lack of earlier testing to compare against. Scandinavia, for instance, has compulsory enlistment which, in turn, entails compulsory IQ testing which is then made publicly available. The declines are also extremely significant. For instance in the extreme case, Denmark IQ's dropped by 1.5 points on average in just 5 years. For now the exact cause(s) are not agreed upon and it's a topic that isn't receiving anywhere near the attention deserves due to people's sensitivity to the topic. Dysgenic factors are almost certainly playing some role, but a decline has also been observed even between brothers. Again, yet another mystery of society somehow deteriorating for no apparent reason. In this case, I do think us inadvertently poisoning ourselves (yet again) in some way or another is probably the best case scenario. Wiki has a decent paragraph on the topic [1]. Searches or things like Google Scholar can turn up far more as well. [1] - https://en.wikipedia.org/wiki/Flynn_effect#Possible_end_of_progression https://en.wikipedia.org/wiki/Flynn_effect#Possible_end_of_p...