Love it. I read his text book and saw his great lectures series on it. Read on this topic a lot fro graduate school. That realization we can do so little to change IQ and how much it matters and how it predicts life outcomes was a punch in the gut. Horrible realization.,(reply>), @Sako Gekchyan that's always the issue with intelligence literature. That's why it's toxic and Haier discussed. That's why no one wants to touch it. I'm less confident of the IQ Lit looking at diff countries. Environmental differences hard to adjust for. And no me denies environment doesn't matter. Of course it matters. However, seems like genetics a huge factor (20% in childhood to as high as 80% in adulthood according to most literature) and a great environment is not going to make up those differences. But it will close them somewhat I think. However, If anything it might just produce results where genetics is all that matters in differences. Tukheimer's work I think found this. On siblings. U equalize environment and the only variation will be in genetics. Still Lynn one guy. He was a eugenecist no doubt and made very insensitve interpretations. But u have to read his work just like u have to read Gould work. And unfortunately Gould's work kinda junk and Lynn's work kinda holds up. As much of a racist as Lynn was, he still said east Asians had a higher IQ than whites. So he is open to the data otherwise he would have said Asians lower. Regardless, the order of IQ differences in his book IQ and wealth of nations hasn't been countered. No study there saying well this pop with an IQ of 90 really has an IQ of 110 upon more and further testing and because of improvements to x and y environmental factors.,(reply>), @killa3 <br>The trouble is when guys like Lynn Racialized this. Yes perhaps there is a black white difference if you measure by the broadest possible standard, but sub-Saharan Africa is one of the most genetically diverse places on earth. A good example of what I’m talking about is the Indian subcontinent. There is a lot of poverty and backwardness in a lot of areas, but India is also producing a huge number of technological innovators and has a massive IT sector. Part of this is the existence of the Varna or Jati Systems historically which organized people into different occupations with varying degrees of reliance on intelligence. So a country like India could actually have millions and millions of extremely intelligent people, but because it has a population of over 1 billion, the sheer number of low IQ people drags the average down. It’s not racial, it’s regional and local. So let’s look again at sub-Saharan Africa. The genotypic IQ according to Lynn is about 80. OK that is for the whole of Africa. The number of 68 or 70 is largely due to environmental things like malnutrition as also admitted by Lynn. Sub-Saharan Africa has over 1 billion people. I wouldn’t be surprised if there are a lot of very intelligent people who simply don’t have the ability to express their intelligence because the systems in these countries are broken as a result of being run by idiots. I have a good friend from Nigeria and he would tell me that half of his taxi drivers were people with college degrees who simply couldn’t find work. In the US, these people would have been college professors, engineers or lawyers. In Nigeria, they were taxi drivers. <br><br>And I’m not just suggesting that there are a lot of smart individuals in these places, I’m suggesting there are a lot of smart groups, like entire ethnic groups of millions of people. If you read the literature of colonial era Europeans, they described certain African ethnic groups in particular as extremely enterprising, clever and even cunning. These groups tend to dominate commerce in their given region and also produce high-quality goods sometimes rivaling European products or surpassing them. <br><br>My point is that yes there are group differences in average IQ, but they are not racial in nature.,(reply>), @Lucian p I was just putting<br>a little more information on some of the different types Jewish people and agreeing with you.,(reply>), @David Otero Did you read what I wrote? I said basically the same thing.,(reply>), @Lucian p there many different types of Jews Ethiopian Jews , Sephardic Jews Mizrahi Jews, all types of people that convert from different races jews other smaller groups Jews the list goes on but your probably thinking all jews are ashkenazi Jews or European jews and they are not all that.