This paper made some news before and was also debunked back then. Note that (2017) should be added. Here is a quote from Neuroskeptic: “The ‘national average’

This paper made some news before and was also debunked back then. Note that (2017) should be added. Here is a quote from Neuroskeptic: “The ‘national average’ data in the mood disorders category, for instance, are taken from the NCS-R survey (data collected 2001-2003.) The NCS-R survey did not ask people whether they’d been diagnosed with a mood disorder. Instead, trained interviewers asked participants a series of questions about their mood, emotions, sleep, and other symptoms, and made diagnoses based on strict criteria. Doctors in the real world don’t diagnose depression the NCS-R way, so we can’t compare the NCS-R estimate of mood disorder prevalence to the estimate of diagnosed prevalence from Karpinski et al.’s survey. It’s comparing Malus and Citrus. Secondly, I have concerns about the sample. This wasn’t a study of high-IQ people. It was a study of Mensans, a self-selected subgroup of high-IQ people. 6.5 million Americans fall in the top 2% of IQ, and only 55,000 of them are members of American Mensa. In other words, Mensans make up about 0.8% of high-IQs, and Karpinski et al. have data from less than 10% of Mensans, so the sample is seriously unrepresentative.“ http://blogs.discovermagazine.com/neuroskeptic/2017/10/22/intelligence-risk-illness/#.XaU5MowxVvI http://blogs.discovermagazine.com/neuroskeptic/2017/10/22/in...