Discover more from Just Emil Kirkegaard Things
Individual genomic admixture and cognitive ability
So, I posted this:
Abstract We used data from the PING study (n≈1200) to examine the relationship between cognitive ability, socioeconomic outcomes and genomic racial ancestry. We found that when genomic ancestry was not included in models, self-reported race/ethnicity (SIRE) was a useful predictor of cognitive ability/S, but when genomic ancestry was included, SIRE lost much or most of its validity. In particular, for African Americans, the SIRE standardized beta changed from about -1.00 to .20. European genomic ancestry was found to be positively related to cognitive ability/S (r's .26/.33) including when SIRE was controlled, while African genomic ancestry was found to be negatively related to cognitive ability/S (r's-.36/-.30) also when SIRE was controlled.
Key words: race differences, group differences, intelligence, IQ, cognitive ability, social status, inequality, ancestry, admixture, genomics
It's note quite definitive because it lacks ability to distinguish between colorism and genetic effects. Environmentalists are very stubborn, so one needs very strong evidence. So, we need datasets that have:
Genomic ancestry, preferably not using just a few AIMs
Racial appearance data: skin brightness in particular
Socioeconomic indicators (for S factor)
What datasets are there like this? Let's find them and start applying so we can settle this question once and for all.
All four variables of interest.
"It began in 1985-6 with a group of 5115 black and white men and women aged 18-30 years"
3 cognitive tests: Rey Auditory-Verbal Learning Test (RAVLT), Digit Symbol Substitution Test (DSST) and Stroop Test
Socioeconomic outcomes. Yes, same as above.
n=500k planned. Currently about 100k.
Mostly Britons, but some British Africans and others.
Crappy cognitive tests, good genomic ancestry and no racial phenotype data (I think).
Requires approval. Must be for medical reasons.
"a diverse, population-based sample of 6,814 asymptomatic men and women aged 45-84 from six field centers across the United States. Approximately 38 percent of the recruited participants are white, 28 percent African-American, 22 percent Hispanic, and 12 percent Asian, predominantly of Chinese descent."
Undeclared anthropometric measures, possibly skin brightness.
Genomic ancestry? There is a person in charge of 'genetic ancestry'.