May 22, 2019, NBC News: IQ rates are dropping in many developed countries and that doesn't bode well for humanity An intelligence crisis could undermine our problem-solving capacities and dim the prospects of the global economy. People are getting dumber. That's not a judgment; it's a global fact. In a host of leading nations, IQ scores have started to decline. ... As yet, the United States hasn’t hit this IQ wall — despite what you may be tempted to surmise from the current state of the political debate. But don’t rush to celebrate American exceptionalism: If IQs are dropping in other advanced countries but not here, maybe that means we’re not really an advanced country (too much poverty, too little social support). Or — just as troubling — if we are keeping up with the Joneses (or Johanssons and Jacques) in terms of national development, that means we are likely to experience similarly plummeting IQs in the near future. At which point, the U.S. will face the same dangers of intellectual and economic stagnation. ... These days, however, Flynn himself concedes that "the IQ gains of the 20th century have faltered." A range of studies using a variety of well-established IQ tests and metrics have found declining scores across Scandinavia, Britain, Germany, France and Australia.... But the broad pattern has become clearer: Beginning around the turn of the 21st century, many of the most economically advanced nations began experiencing some kind of decline in IQ. One potential explanation was quasi-eugenic. As in the movie “Idiocracy" it was suggested that average intelligence is being pulled down because lower-IQ families are having more children ("dysgenic fertility" is the technical term). Alternatively, widening immigration might be bringing less-intelligent newcomers to societies with otherwise higher IQs. However, a 2018 study of Norway has punctured these theories by showing that IQs are dropping not just across societies but within families. In other words, the issue is not that educated Norwegians are increasingly outnumbered by lower-IQ immigrants or the children of less-educated citizens. Even children born to high-IQ parents are slipping down the IQ ladder. Some environmental factor — or collection of factors — is causing a drop in the IQ scores of parents and their own children, and older kids and their younger siblings. One leading explanation is that the rise of lower-skill service jobs has made work less intellectually demanding, leaving IQs to atrophy as people flex their brains less. There are also other possibilities, largely untested, such as global warming making food less nutritiousor information-age devices sapping our ability to focus. Ultimately, it’d be nice to pin down the precise reason IQ scores are dropping before we’re too stupid to figure it out, especially as these scores really do seem connected to long-term productivity and economic success. And while we might be able to compensate with skills besides intelligence, like determination or passion, in a world where IQ scores continue to fall — and where the drop expands to places like the United States — there’s also a bleaker scenario: a global intelligence crisis that undermines humanity's problem-solving capacity and leaves us ill-equipped to tackle the complex challenges posed by AI, global warming and developments we have yet to imagine.