Monthly Archives: December 2011

Chinese (Taiwanese) find neurological g-factor, possibly

While the existence of a psychometric g is now firmly established, there is considerable controversy concerning the existence of a neurological and/ or genetic g. (See my previous post.) For those not familiar with the debate, let me just quote … Continue reading

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A wide-ranging, sophisticated critique of biological g-theory (and with it, HBD)

KAN. 2011. THE NATURE OF NURTURE: THE ROLE OF GENE-ENVIRONMENT INTERPLAY IN THE DEVELOPMENT OF INTELLIGENCE CHAPTER 1 Introduction CHAPTER 2 Nonlinear epigenetic variance: Review and simulations CHAPTER 3 The nature of nurture: On the high heritability of cultural dependent … Continue reading

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IQ and Genetic Amplification

I was right (about this). The increase in the heritability of intelligence may be the result of several processes. Genetic amplification has been previously suggested (DeFries et al., 1987), and this is what was observed in the present study…. ….How … Continue reading

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Egalitarian Racism

Fringeelements’ newer video: I’ve been posting on colorism and hybrid differences, in part, to elaborate on some of the technical points made by Ryan in Make the World Flat (2:48:17 on). But the whole topic ties in just as well … Continue reading

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Mulatto advantage in the NLSF

I was unable to find the “parent’s race” variable in the NLSF public use data and so determine by exactly how much the mixed race Blacks outperformed their “multigenerational” peers. Apparently, this is restricted information. But I did find the … Continue reading

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Updated post

I updated my Blacks, IQ, and Color in the NLSF post. I goofed my original analysis. IQ is correlated with color about the same in this sample as in others. So if you’re worried about accusations of colorism going anywhere, … Continue reading

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Is intra-Black “colorism” partially due to genetics?

In the last post I nihlistically concluded that: “The fact that there is a correlation, of course, does not reduce the environmental-genetic uncertainty much, as the correlation could always be explained environmentally.” I concluded this even after pointing to an … Continue reading

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Blacks, IQ, and Color in the NLSF

[newer update: I guess I goofed with the original analysis. The data file was really difficult to handle and I had to compute a number of values. Somehow I didn’t properly exclude non-score SAT/ACT values (e.g. “enter 999 if you … Continue reading

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Blacks, IQ, and Color in the NLSY97

[note: JL has pointed out that subjective measures of skin color, as used in this data set, are much more unreliable than I initially conjectured. Apparently there’s also a race by interviewer effect (Hill, 2002). Contrary to what some may … Continue reading

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Color and IQ among African Americans in the ADD health data

I just ran bivariate correlations. The sample was filtered for self-indentifying US born African Americans (variable: H3OD4B) in wave III of the ADD health data. In the first table, “black” means “black color” and “white” means “white color.” The second … Continue reading

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