tag:blogger.com,1999:blog-3734925856292601239.post5198965997477645728..comments2024-03-22T15:55:34.030-04:00Comments on Evo and Proud: Differences in the genetic architecture of cognition?Peter Frosthttp://www.blogger.com/profile/04303172060029254340noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-3734925856292601239.post-28950330934813898282020-01-16T09:39:53.476-05:002020-01-16T09:39:53.476-05:00Way late to the party and it is way late almost to...Way late to the party and it is way late almost to dawn. <br /><br />There is anecdotal evidence that the Afro-American population is "bimodal", i.e. coming from two distinct sub-populations due to selection. One group are "kidnap victims" the other are "culls" who lost their freedom due to debt, incompetence, and/or criminal behavior in West Africa. <br /><br />https://www.newyorker.com/culture/personal-history/my-great-grandfather-the-nigerian-slave-trader <br /><br />Individuals could "loose their freedom" due to bad luck or common error (e.g. crop choice) but do well with their "asigned" family/clan and then remain in a life-long position. Those who were lazy, dim and/or criminal would be more likely to end as part of a trade with Arab or European slave traders wherethhey were exchanged for merchandise or cash. The export slave population would include some portion of "typicals" who were kidnapped but would be "enriched" in culls who were lazy, dim and/or criminal and uncooperative.<br /><br />There does not seem to be an obvious way to differentiate the descendents of the typicals and the culls in the founder population in the Western Hemisphere, but the typicals in the Afro-American population may amount to as few as 30% as guesstimated from the low crime portion of the Afro-American population that remained in Compton (California) after the violent Hispanic gang purge of the criminal, Black gang members and their families. <br /><br />It maybe worth noting that the "woke" Afro-American students at Cornell University, several years ago, were well aware of the different success rates of Immigrant African students compared to those of domestic Afro-American students. This difference was attributed to the Afro-American experience of "slavery" without any consideration of the different selection process involved for the two groups. <br /><br />The possible existance of two sub-populations of African descendents in the Western hemisphere might complicate the interpretation of genetic and IQ findings. <br />Mike-SMOnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-58564437015149580852019-10-02T14:23:58.470-04:002019-10-02T14:23:58.470-04:00Dietz,
That was the purpose of the Minnesota Tran...Dietz,<br /><br />That was the purpose of the Minnesota Transracial Adoption Study. Cognitive ability seems to be more malleable when we're young, so it's possible to boost it at younger ages. Unfortunately, that improvement tends to wash out over time.<br /><br />Anon,<br /><br />The problem is that people of self-identified "mixed" ancestry tend to be more European than African. In the Philadelphia study, self-identified "biracials" were 80% European. There also seems to be a middle-class bias: people of mixed background are more likely to acknowledge their mixed background if they're middle class. Otherwise, they call themselves "black."<br /><br />Santo,<br /><br />The deepest genetic split is between Africans and non-Africans. Of course, the most important factor is natural selection (or rather differences in natural selection). Two population can be separated from each other for a long time and still be remarkably similar.Peter Frosthttps://www.blogger.com/profile/04303172060029254340noreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-78536302637434908072019-10-01T18:26:09.365-04:002019-10-01T18:26:09.365-04:00Just follow humankind macro-evolutionary path. See...Just follow humankind macro-evolutionary path. Seems, aboriginals [more genetically distant] would have a more differentiated cognitive archicteture, i wonder.Santonoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-63650260286920161082019-09-30T22:11:36.809-04:002019-09-30T22:11:36.809-04:00Would be interesting to conduct the same tests on ...Would be interesting to conduct the same tests on similar reference populations within the UK; that country carries similar results with functionally no difference in IQ test scores between white and biracial populations as well: https://akarlin.com/wp-content/uploads/2012/08/pupil-background-cat-scores.jpgAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-33673570535171611142019-09-28T19:39:02.800-04:002019-09-28T19:39:02.800-04:00We need more studies of this type. I have always ...We need more studies of this type. I have always suspected that the contribution of genes to IQ is not race-linear, but rather "threshold" in nature. Like yeast in bread. People should be tested over time to watch how cognition changes.Dietznoreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-48434808659727757662019-09-28T14:44:39.299-04:002019-09-28T14:44:39.299-04:00He probably could get it published. At the very le...He probably could get it published. At the very least, it would be an interesting test case, and the publisher should have the gonadic fortitude to push ahead. I suspect the publisher has come under pressure from individuals or groups behind the scenes. That's the real reason.<br /><br />It's a bit of a surprise that James Flynn should be targeted for this special treatment. He's an anti-hereditarian!Peter Frosthttps://www.blogger.com/profile/04303172060029254340noreply@blogger.comtag:blogger.com,1999:blog-3734925856292601239.post-17252608065604368922019-09-26T02:07:41.283-04:002019-09-26T02:07:41.283-04:00Direct evidence for genetic differences in intelli...Direct evidence for genetic differences in intelligence is emerging. As time passes and African genetics are better explored, I expect the direct evidence will become ever more incontrovertible.<br /><br />Thing is, James Flynn, the best challenger of IQ hereditarianism of all time, can't even get a book about free speech published in the UK. Even he! The new evidence will be harder to contradict, but can be ignored.Sidnoreply@blogger.com