tag:blogger.com,1999:blog-5880610.post2929937104340188435..comments2024-01-13T18:57:18.243-05:00Comments on Information Processing: Childhood SES amplifies genetic effects on adult intelligenceSteve Hsuhttp://www.blogger.com/profile/02428333897272913660noreply@blogger.comBlogger24125tag:blogger.com,1999:blog-5880610.post-64031173749283673632013-09-30T02:58:21.367-04:002013-09-30T02:58:21.367-04:00"But culture reduced tests, particularly once..."But culture reduced tests, particularly once one is old enough to follow<br /> basic instructions and focus, are probably much less sensitive to <br />education than vocab tests are."<br /><br /><br />yes, but the very idea that an amazonian whose language has only "one", "two", "a lot" or a hottentot, or a new guniean whose grandfather hunted heads could Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-77664540240879374942013-09-29T23:48:45.857-04:002013-09-29T23:48:45.857-04:00here's a "behind blue eyes" for you ...here's a "behind blue eyes" for you may black-chinese-white jamaican:<br /><br /><br />the one woman this pathetically still single white guy has loved was "into" black guys. can't do anything about that. and she was very smart and ingrid bergman in looks, an 11. <br /><br /><br /><br />c'est la vie.Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-90699991748765185382013-09-27T10:12:50.554-04:002013-09-27T10:12:50.554-04:00Even still, I'd like to see such studies use I...Even still, I'd like to see such studies use IQ tests where we can decompose the <i>g</i>-loadings of the various subtests. Rushton & Jensen have argued that superior environments mostly affect the <i>less g<i>-loaded items on the test. Reaction time might be a good "pure" measure, for example.</i></i>JayManhttp://jaymans.wordpress.com/noreply@blogger.comtag:blogger.com,1999:blog-5880610.post-26144648416370585202013-09-27T10:09:37.855-04:002013-09-27T10:09:37.855-04:00This exemplifies another Americanism. A person, a ...This exemplifies another Americanism. A person, a thing with a gender <br />though indefinite, should always be referred to with the gender neutral <br />"he, his, him". It's really horrible when he and she are randomly <br />distributed. Newspeak.<br /><br /><br />Agreed!JayManhttp://jaymans.wordpress.com/noreply@blogger.comtag:blogger.com,1999:blog-5880610.post-44607526683355433612013-09-23T21:55:01.046-04:002013-09-23T21:55:01.046-04:00I haven't researched Afrikaner intelligence, b...I haven't researched Afrikaner intelligence, but who says their allegedly lower scores in the 1950s were caused by lower education? Perhaps they had sub-optimum nutrition. The Dutch for example saw their non-verbal IQ's jump 21 points in 30 years, an increase that was paralleled by astonishing gains in Dutch height, strongly suggesting that 20th century nutrition has dramatically Iamexpertnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-64827110610764812572013-09-23T00:41:38.981-04:002013-09-23T00:41:38.981-04:00right. i think you may be showing the typical and ...right. i think you may be showing the typical and understandable prejudice that non-verbal tests are less dependent on education than verbal tests.<br /><br />afrikaners scored 10 pts below british south africans in the 50s. on the verbal subtests? no. the difference was all in the non-verbal. now the difference has been erased.<br /><br />using so many words and the ability to define words are Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-46525686669203013702013-09-22T11:19:30.448-04:002013-09-22T11:19:30.448-04:00had to stop reading there. vocab is the most g loa...<i>had to stop reading there. vocab is the most g loaded and most reliable subtest of the WISC and of the WAIS. there is ABSOLUTELY no real distiction between aptitude and achievements tests. the subject <br />specific a-levels of english edu are as correlated with self-described iq tests as those tests are with one another, that is they are iq tests. the aptitude achievement distinction is Iamexpertnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-19856624690126943042013-09-22T09:35:48.368-04:002013-09-22T09:35:48.368-04:00The ace parameters aren't "misreported&qu...<i>The ace parameters aren't "misreported": They're clearly labeled as to what they are. It's like saying a correlation is misreported because it's not an R2</i><br /><br />This is what you wrote in the paper:<br /><br /><i>The model indicated that the average heritability, h2 = .77, 95% confidence interval (CI) = [.55, .82], and unique environmental effects, e2 = .63,pnin1957noreply@blogger.comtag:blogger.com,1999:blog-5880610.post-6602342117894057992013-09-22T02:38:11.925-04:002013-09-22T02:38:11.925-04:00would that affect heritability?
if the parents h...would that affect heritability?<br /><br /><br />if the parents have found their native soil, their children are likely to have the same best environment and the parents will likely give this to them.<br /><br /><br />steve's dad was a prof of aeronautical engineering. his own children have a mother who's a prof of comp lit. i expect his children have a higher liability to becoming Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-80448548110716319132013-09-21T22:31:39.310-04:002013-09-21T22:31:39.310-04:00"though achievement tests like vocabulary are..."though achievement tests like vocabulary are often used as an excellent proxy for aptitude"<br /><br /><br />had to stop reading there. vocab is the most g loaded and most reliable subtest of the WISC and of the WAIS. there is ABSOLUTELY no real distiction between aptitude and achievements tests. the subject specific a-levels of english edu are as correlated with self-described iq Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-68284415370148524172013-09-21T21:06:33.928-04:002013-09-21T21:06:33.928-04:00The definitive twin study or study of closely rela...The definitive twin study or study of closely related people is one where the geographic/cultural diversity is maximal between twins, but where z scores are for the respective populations. Of all those already done one might choose the pairs which grew up and live at greatest geographic distance. Perth is more like London than Dusseldorf is, perhaps, but it would still be revealing.<br /><br /><Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-11752615343199945132013-09-21T19:13:38.900-04:002013-09-21T19:13:38.900-04:00I thought the consensus was that between family en...I thought the consensus was that between family environmental differences contributed NOTHING to IQ by the time one reaches middle age. Did I miss something?<br /><br /><br /><br /><i>Richer children have similarly good educational opportunities, so <br />genetic differences among them become more apparent. And since richer <br />children have more educational choice, they (or their parents) canIamexpertnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-36707370475885327872013-09-21T18:59:45.244-04:002013-09-21T18:59:45.244-04:00"These findings are consistent with the hypot..."These findings are consistent with the hypothesis that higher SES <br />affords greater opportunity for children to seek out and benefit from <br />learning experiences that are congruent with their genetically <br />influenced intellectual interests."<br /><br /><br />And thus it is shown that rich cacti find the desert and rich red woods find Big Sur, but then the height of the cactiDiogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-21466754194346748502013-09-21T18:25:21.056-04:002013-09-21T18:25:21.056-04:00"Scandinavia has higher h2 than most."
..."Scandinavia has higher h2 than most."<br /><br /><br />yet intergenerational income elasticity is almost 0.Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-13576821848372797622013-09-21T18:18:17.130-04:002013-09-21T18:18:17.130-04:00" I would have liked to see discussion in the..." I would have liked to see discussion in the paper about why you think <br />all the previous studies in the USA using diverse methods (classic twin <br />design, MZA, adoption, extended kinships) somehow missed the fact that <br />IQ differences are overwhelmingly due to unsystematic influences <br />("noise") unrelated to either nature or nurture as traditionally <br />Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-66384681053435133482013-09-21T17:14:35.447-04:002013-09-21T17:14:35.447-04:00Regarding SES, I agree that with more space we cou...Regarding SES, I agree that with more space we could give more information, such as qualitative descriptions of what life is like at various levels of SES. FYI, Duncan SES levels in this sample are reasonably normal with peaks that one gets given qualitative gaps in status: for instance college create a step-up in status, and narrow bands of status with more people in them (like teachers and TimothyBatesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-80893819596393751212013-09-21T14:33:58.578-04:002013-09-21T14:33:58.578-04:00Are there differences in the extent of assortative...Are there differences in the extent of assortative mating by SES?Henry Harpendingnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-7736882665397199082013-09-21T14:10:51.403-04:002013-09-21T14:10:51.403-04:00Whether or not the average heritability of the sam...<i>Whether or not the average heritability of the sample is attributed to a main effect, or included in the moderated effect (as it was here) is a statistical artifact of how SES is scaled</i><br /><br />In Figure 3, what does the SES scale mean? How does it relate to the Duncan scale? What percentage of the population within the same cohort are at each level on the scale? There should've pnin1957noreply@blogger.comtag:blogger.com,1999:blog-5880610.post-84439148767762289642013-09-21T12:00:57.593-04:002013-09-21T12:00:57.593-04:00Thanks for the comment Diogenes. We've recentl...Thanks for the comment Diogenes. We've recently been looking at whether education raises g or raises task-specific skill. In one paper that's out, we found that education raised test scores, but left basic processing speed unchanged. In another that we're having a hard time placing, we found that school doesn't raise g, but rather raises test scores in a practice-specific fashion.TimothyBatesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-83487744505792351632013-09-21T11:31:25.284-04:002013-09-21T11:31:25.284-04:00Whether or not the average heritability of the sam...Whether or not the average heritability of the sample is attributed to a main effect, or included in the moderated effect (as it was here) is a statistical artifact of how SES is scaled: So the main effect of genes on IQ was zero but that doesn't mean the average h2 was zero, as can be seen: it's not.<br /><br />The results also don't fly in the face of prior reports. In classic twin TimothyBatesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-9335015413115889142013-09-21T11:03:56.663-04:002013-09-21T11:03:56.663-04:00Thanks for the reply. The mean age in your sample ...Thanks for the reply. The mean age in your sample is about 54 with an SD of about 12 years. If the age distribution is normal, this means that the majority of subjects are not in their 50s but younger or older. A substantial percentage of the sample therefore consists of pairs of twin pairs that are several decades apart in age. If the distribution is non-normal and most of the subjects are in pnin1957noreply@blogger.comtag:blogger.com,1999:blog-5880610.post-89005334381732786012013-09-21T04:30:41.392-04:002013-09-21T04:30:41.392-04:00"The environment can moderate the effect of g..."The environment can moderate the effect of genes"<br /><br /><br />NO!Diogenesnoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-14786753244654707692013-09-21T02:50:34.512-04:002013-09-21T02:50:34.512-04:00Interesting to see those results with adult twins....Interesting to see those results with adult twins. There was a paper early last year by Plomin which looked at the moderating effect of SES on children's intelligence at ages 2, 3, 4, 7, 9, 10, 12 and 14:<br /><br />"Results<br /><br />We found greater variance in intelligence in low-SES families, but minimal evidence of GxE interaction across the eight ages. A power calculation bottinoreply@blogger.comtag:blogger.com,1999:blog-5880610.post-90582612430312182292013-09-20T22:23:44.073-04:002013-09-20T22:23:44.073-04:00Wow.Wow.tractalnoreply@blogger.com