I agree on the subject of Fst; if you switch from PCA biplots to Fst, that’s going to better emphasize differences due to geographical separation. (But likely still not enough to scientifically confirm a classical racial taxonomy as the one true racial taxonomy. One would still have to decide which samples to use to build one’s Fst matrix and address the issue of how to extract racial categories from the Fst matrix. I’d also anticipate getting caught up in the same sort of issues as the structure program.)
The real question is whether folk notions of ethnicity map onto clusters in gene space.
Folk notions of ethnicity arguably could, because they are far more squishy and pliable than folk notions of race.
If they do (and they do) it implies different frequency distributions for alleles in the groups.
I can’t help feeling that you believe I’m arguing against the validity of race because I think that disproves the possibility of statistical group differences. If so, you can rest easy. I acknowledge the possibility of statistical group differences—it doesn’t live or die by the validity of race. I see (or think I do, anyway) genetic group differences in (relatively) boring traits like skin color and hair color—and if those, why not genetic group differences in drama-provoking traits like IQ, personality or genital size?
OK, so we just differ in nuances of definition. If you prefer ethnicity to race, that’s fine with me.
Well, for whatever it’s worth, I continue to disagree with one of the arguments in the blog entry I mentioned—there is more here than a minor semantic divide.
The usual lame argument is “race doesn’t exist, so how could there be group differences”—but I think neither of us is arguing that side.
So your position is that there are probably allele clusters do to cultural and geographic isolation (and therefore potentially group differences in IQ or personality) your concern is that you don’t think those clusters have been shown to map one to one with our folk racial categories?
Do you think our folk racial categories aren’t the product of observable phenotypes? Do you think those categories at least approximate a valid scientific taxonomy?
My concern (or at least the one that I’m elaborating on in this thread) is that those clusters can be made to map onto folk racial categories, or made to be only partly consistent with folk racial categories, or made to be contradictory to folk racial categories, depending upon how one’s own preconceptions of race color one’s cluster analyses.
Do you think our folk racial categories aren’t the product of observable phenotypes?
No.
Do you think those categories at least approximate a valid scientific taxonomy?
Valid for which scientific purpose? They are likely to be workable categories for a sociologist studying race relations. They are likely to be inadequate categories for a molecular anthropologist studying human genetic variation. Though I expect some molecular anthropologists (and evidently at least one professor of physics) would dispute that.
I agree on the subject of Fst; if you switch from PCA biplots to Fst, that’s going to better emphasize differences due to geographical separation. (But likely still not enough to scientifically confirm a classical racial taxonomy as the one true racial taxonomy. One would still have to decide which samples to use to build one’s Fst matrix and address the issue of how to extract racial categories from the Fst matrix. I’d also anticipate getting caught up in the same sort of issues as the structure program.)
Folk notions of ethnicity arguably could, because they are far more squishy and pliable than folk notions of race.
I can’t help feeling that you believe I’m arguing against the validity of race because I think that disproves the possibility of statistical group differences. If so, you can rest easy. I acknowledge the possibility of statistical group differences—it doesn’t live or die by the validity of race. I see (or think I do, anyway) genetic group differences in (relatively) boring traits like skin color and hair color—and if those, why not genetic group differences in drama-provoking traits like IQ, personality or genital size?
OK, so we just differ in nuances of definition. If you prefer ethnicity to race, that’s fine with me.
The usual lame argument is “race doesn’t exist, so how could there be group differences”—but I think neither of us is arguing that side.
Well, for whatever it’s worth, I continue to disagree with one of the arguments in the blog entry I mentioned—there is more here than a minor semantic divide.
Correct.
So your position is that there are probably allele clusters do to cultural and geographic isolation (and therefore potentially group differences in IQ or personality) your concern is that you don’t think those clusters have been shown to map one to one with our folk racial categories?
Do you think our folk racial categories aren’t the product of observable phenotypes? Do you think those categories at least approximate a valid scientific taxonomy?
My concern (or at least the one that I’m elaborating on in this thread) is that those clusters can be made to map onto folk racial categories, or made to be only partly consistent with folk racial categories, or made to be contradictory to folk racial categories, depending upon how one’s own preconceptions of race color one’s cluster analyses.
No.
Valid for which scientific purpose? They are likely to be workable categories for a sociologist studying race relations. They are likely to be inadequate categories for a molecular anthropologist studying human genetic variation. Though I expect some molecular anthropologists (and evidently at least one professor of physics) would dispute that.