about me
game theory
... more
Subscribe Weblog

Say something about IQ, as Tyler Cowen did over at Marginal Revolutions. Brad DeLong did something similar before, as well as Kevin Drum, and Andrew Sullivan. All you have to do is take the issue of IQ seriously, and bam!

The debate centers around three key issues that are somewhat independent: IQ is 1) important (has socio-economic consequences) 2) heritable (say 50%) and 3) varies systematically between different genetic families (eg, races). These factual hypotheses--and though racists believe in them, they are still statements about reality--and people on both sides have strong opinions, but the IQ crowd is generally more knowledgeable about what they are speaking because if you believe in IQ, you read up on it, while if you think it is meaningless, you don't. So when the anti-IQ crowd makes silly comments that they think definitively refute the above points, they face an avalanche of commenters who know much more about the issue than they do (usually these double to quadruple and average econ blog's comment).

The standard anti-IQ cliches include about how poor natives are so smart (eg, Jared Diamond's assertion that New Guinea tribesmen are smarter than Europeans), or that because race explains only 15% of genetic variability that races don't exist (it's the correlation in the variation that matters), that IQ can be altered significantly through early education (Heckman now thinks it's the non-IQ components that can be changed, and they are economically important), that the Flynn Effect will save us all (it stopped), that it's not nature but the combination that is essential (who said 100% nature?), etc., are smacked down by a rabid pack who have been reading GNXP and Steve Sailer.

To Cowen's point--that natives are smart because they can fish and gossip very well--I think the key point, is that while tribesmen are much better than Cowen at living off the land, so is my dog, and I'd be hesitant to say he's got a higher IQ (though certainly more 'fit' if we were in the forest).
Paul N (guest) meinte am 19. Jul, 03:25:
What are the policy implications of believing in IQ? I can't think of any. The issue seems to exist only so people can argue. I agree with TC, I think his point is natives don't have practice at IQ questions so they won't do well on IQ tests, not that being able to fish makes you smart. I'd suggest that a random native New Guinean baby raised in the US would have an average 100 IQ but I'm not a IQ stats fan so I'd better not.

IQ may correlate with success but I know a lot of high IQ math nerds who still live in their parents' basements and a lot of hard working sub-120 IQ people who are doctors. 
TGGP (guest) antwortete am 22. Jul, 00:24:
Why it matters if IQ matters
Bryan Caplan explains why it is important here
Jeff D (guest) meinte am 19. Jul, 04:31:
I have always wondered how one could except that different racial groups are better at certain physical activities (for example, west Africans tend to be better sprinters than other groups and Kenyans who grow up in the Rift Valley area tend to be good long distance runners) can't believe that we also vary racially in terms of intelligence. 
ruth (guest) meinte am 20. Jul, 15:24:
i am not one of the pc crowd, yet i find your unqualified dog-native comparison deeply offensive. yes, i do know you did not want to say that papua-neuguineans have the same iq as dogs. if you don't understand where my problem is, imagine how a similar comparison would sound to you if you found it on a arabic muslim website directed at white americans. eg "infidels are chaste like a dog is chaste". remember also that verbally dehumanizing people has a rather long tradition in the context of kinds of behaviour, like mass murder, that presumably you do not want to be associated with. i am ill in bed at the moment and have been surfing around a bit, and let me tell you that on some german nazi blogs, discourse about race is less aggressive in tone and less full of contempt for races and cultures not one's own than i have recently found on a number of presumably non-nazi english-language websites.
i thought cowen wanted to say that mexican villagers seem and probably are intelligent, yet would fail on a standard written iq test because of lack of familiarity with written material and written tests in general, that is, for cultural reasons. if that was not his point, then indeed his comment was not particularly pertinent. (nor by the way was your dog comment, because dogs are instinctive hunters physically well equipped for hunting and humans aren't. humans use the their intelligence and general learning and problem solving abilities "to live off the land", so diamond's obeservation was quite legitimate and relevant.)
having read up the subject race/iq quite extensively in the scholarly journals a few years ago, my conclusion was that genetic iq differences between races are not as well attested as people like Lynn (who is extremely unknowleadgabe about a number of subjects he would have needed to research for his argument, like, for example, cultural, economic and demographic history) claim.
Reseach so far has, for obvious reasons, been largely epidemiological,
and epidemiological studies (eg showing population-level associations between nutrition and diabetes, between american nationality and aggression, african race and iq) are not particularly good at sorting out cause-effect relationships. in medicine, you use them for hypthesis-building rather than for hypothesis-testing. what you need is controlled experiments (especially with a trait like iq that is clearly influenced by more than one variable). twin/adoption studies come close to doing that for iq, but these studies are small and at least the ones i have read are contradictory.
also, there are those epidemiological data that don't quite fit the trend.
why, for example, do pakistani immigrant children have dismal educational achievement in britain, while children from an indian background excel, far surpassing the white british group? that doesn't fit the thesis that race is the main factor in population-level differences, or even that it is a significant factor, the difference in educational achievement between indians and pakistais in britain being rather more noticable than the black-white divide in the states. (Perhaps you will tell me there are large genetics difference between Pakistanis/Bangladeshis and Indians. Are there? Intuitively, it's abit unlikely. Also, lynn lumps them with the middle easterners as having low iq, so obviously, they have low average iq in india. or they have in the studies lynn cites, his selection is not always impeccably impartial.)
just as people on the contra side of the debate on racial differences in iq should drop their attitide that something they do not want to be true cannot be true, so people on the other side of the divide should be a bit more cautious and less gleeful. 
ben tillman (guest) antwortete am 20. Jul, 16:30:
"i am not one of the pc crowd, yet i find your unqualified dog-native comparison deeply offensive."

It wasn't a comparison. It was a reductio ad absurdum. 
TangoMan (guest) antwortete am 20. Jul, 19:54:
why, for example, do pakistani immigrant children have dismal educational achievement in britain, while children from an indian background excel, far surpassing the white british group? that doesn't fit the thesis that race is the main factor in population-level differences, or even that it is a significant factor, the difference in educational achievement between indians and pakistais in britain being rather more noticable than the black-white divide in the states.

You raise a very interesting case study, but I think that you're jumping to conclusions too quickly. Consider the genetic consequences that follow from cultural practices.

First the cultural practice that most dramatically distinguishes Pakistanis from Indians:
A Labour MP has called for an end to the practice of cousin marriage after a Newsnight investigation reports that British Pakistanis are 13 times more likely to have children with recessive disorders than the general population.

The same research shows that British Pakistanis account for 3.4% of all births but have 30% of all British children with recessive disorders.

It is estimated that at least 55% of British Pakistanis are married to first cousins.

Mrs Cryer's constituency is the Bradford area, where local doctors estimate that three quarters of marriages in Bradford's Pakistani community are between first cousins.
Secondly, consider the following study:
The 50 inbred children were products of marriages between first cousins; their mean age was 7.7 years (range, 6-11 years). A significant (p 0.001) negative association was found between inbreeding and score on the Weschler Intelligence Scale for Children (WISC-C). In addition, the weighted mean IQ of inbred children )88.4 + or - 1.37) differed significant (p 0.001) from that recorded among 50 noninbred controls of similar age and socioeconomic status (99.6 + or - 2.0).
Eric Falkenstein antwortete am 20. Jul, 20:00:
I didn't mean to imply American Indians are dogs, morally or intellectually. I did want to highlight the simple logical fallacy of saying that because someone has certain high skills, they must have a high IQ. IQ measures abstract thinking about language, geometry, logic, etc. It is not a skills test. I just wanted to highlight the absurdity of his logic, that certain skills imply a high "IQ" if we could only measure it on what someone is best at. What Tyler is really saying is that they are perhaps well suited for the environment, but if he's saying that they have high IQs, I think there isn't any data to back him up 
ruth (guest) antwortete am 21. Jul, 09:20:
well, Eric, thanks for not overreacting, i was a bit heated. 
ruth (guest) antwortete am 21. Jul, 10:01:

well, i was not really coming to any conclusions there, rather i wanted to say that it's a bit early for conclusions and that things are at the very least a bit more complicated that "everyone but whites and east asians that live in cold climates have low iqs", as lynn, rushton and co keep saying in the media.
Yes, i also think that cousin marriage may well be a factor in depressing pakistani's intelligence (and that of turks in germany). in fact, i recently wanted to write a cautionary pamphlet for distrubution among turks here (i am german), but in the end didn't because further research showed me that, again, the picture wasn't as clear as i had assumed. while afzal and co-workers consistently found an inbreeding depression for iq in offspring of first-cousin-marriages, neel et al using a much larger cohort and much better controlled study design didn't on Hirado island, Japan, and also came to the conclusion that an earlier study in hiroshima was flawed and only marginally statistically significant anyway. (it is notoriously difficult nowadays to separate inbreeding effects from socioeconomic status correlates.) note also that that earlier hisroshima study, if i remember rightly, had concluded that the effect is no longer vsisible in the first generation of non-consanguinous mating, ie there is certainly no lasting effect on the gene pool of a consanguinous group. note also that the widespread cultural practice of cousin marriage hasn't kept the Japanese from the kind of development their country had in the 20th century. again, these are multifactorial, highly complicated questions, and simplification is not warranted. 
ruth (guest) meinte am 20. Jul, 16:13:
when i said that lynn was not knowleadgable about "dempgraphic history",
i meant the r/K selection part of modern racial theories. but that is of course not lynn's brainchild, but rushton's. 
SerieALivescore meinte am 23. Jan, 07:41:
Experiment cricket has grown to become dull together with prosaic. Some defined proposals that will revamp any test cricket have already been suggested by just former Of india cricket footballer Ravi Sasthri. www.scorespro.com 
SerieALivescore meinte am 18. Feb, 05:00:
Non-public education loans are offered to people for them to provide personal backup on their education options. Private knowledge loans will not be endorsed by means of other federal agencies but are provided by other banking companies. Private knowledge loans process are perfect for both equally undergraduate in addition to graduate scientific tests. counseling education 
SerieALivescore meinte am 18. Feb, 05:01:
The use of this article is usually to introduce towards world this educational answers module on the world's most up-to-date personal in addition to professional dilemma solving web page. The document is dealt with to these readers who may have an educative problem bogging these individuals and exactly who may thus be looking for a way outside of their problem. creative education summit 
SerieALivescore meinte am 18. Feb, 05:01:
Getting a year out to search traveling? You should definitely have set a travel insurance policy prior to travel, one more thing you would like is to waste all ones hard ended up saving money with unnecessary payments like professional medical expenses. travel to help 
SerieALivescore meinte am 18. Feb, 05:02:
Consumer can be not mindful of these announcement teams, or the best way to contact these individuals for guide. When you want help, an incredible first step Which i recommend is usually a Google seek. A simple try to find on your side consumer returns many consumer announcement team links to help you start. all consuming news 
SerieALivescore meinte am 18. Feb, 05:02:
Playing golf was at first played from the sea as well as the first back links golf classes were created. Today, Scotland boosts lots of the worlds greatest like the hallowed lawn of Saint Andrews Outdated Course for the last key arrival around the Open Excursion, Turnberry which usually today is frequently hailed because the best playing golf courses inside Scotland. orkney news today 
SerieALivescore meinte am 18. Feb, 05:02:
News besides educates folks but also is a opportinity for the posterity to know from way back when mistakes, and as such it gets to be critically significant that announcement is reported. There are some people who believe what a announcement agency studies, however you will need to be thorough in believing a announcement piece seeing that its capacity to try and do harm is a plus. micro news agency 
SerieALivescore meinte am 18. Feb, 05:03:
Announcement programmes include suddenly come to be hot property and are also vying intended for attention having other favorite programmes telecast in a variety of channels. All important television tv stations are including a minimum of one news channel on their bouquet. 7d news 
SerieALivescore meinte am 18. Feb, 05:04:
Having those a couple contributory variables alone it truly is no ask yourself that lots of people who include animals end up getting rid connected with fleas in your house at many point. Nobody particularly loves to make the item publicly regarded but, trust me a person alone in requiring you to sort out the condition. the home stop 
SerieALivescore meinte am 18. Feb, 05:04:
Mainly because everyone gives you desktops in addition to laptops at your home, computer mend home-based small business strikes to be a phenomenal business. This isn't going to entail considerably capital by any means but technological skills in relation to computer. repair-home 
SerieALivescore meinte am 18. Feb, 05:04:
Looking for a reliable in addition to superior house cleaning services is probably not some sort of walk from the park, meaning you really have to assess in addition to evaluate many possible possibilities. It 's best not to get trust in many people, especially entire strangers, to enter the house for clean-up purposes with not a careful per-screening. superior home services1 
SerieALivescore meinte am 18. Feb, 05:04:
Sometimes you've got dark bags under ones eyes and it also might make an effort your nights lifestyle. As well as feel awful to arise the next day to determine that you've got dark range under little brown eyes. eye on home 
SerieALivescore meinte am 18. Feb, 05:04:
Going home is usually a stressful experience and this can be made less of a challenge with a bit forward setting up. It is worthwhile spending the other time for getting everything adequately organised in order to alleviate those late panics. homes moving 
SerieALivescore meinte am 18. Feb, 05:05:
That is certainly your choice; home automation is really as extensive or maybe as limited since you like. Smart property systems can often control light and safety measures systems (as well as surveillance video camera systems) your dream house media bedroom and movie, intercom programs and local weather control. home smart home 
SerieALivescore meinte am 18. Feb, 05:05:
The vital thing I suggest you choose to do is record your aims. Remember when producing your aims, don't cause them to too vast. Try in addition to set ones goal and so they're not too hard to gain or impossible to obtain, but there're also definitely not incredibly simple achieve better football 
SerieALivescore meinte am 18. Feb, 05:05:
Nevertheless jobs from the sports marketplace might look like plentiful, this can be a very reasonably competitive field. Partioned into twenty sections, this marketplace contains many jobs with, sporting functions, trade indicates and gatherings, sport sponsors, hobby related marketing, sport establishments, sport shops and produces, and skilled sport products and services. sport industry jobs 
SerieALivescore meinte am 18. Feb, 05:06:
Civic is one among Honda's almost all successful products ever. In truth, it is amongst the most well-known in addition to sought-after cars on this planet. The stable upsurge with sales due to this particular model in recent times is enough evidence of the reliable demand in addition to unquestionable status in this vehicle world-wide. civic sports 
SerieALivescore meinte am 18. Feb, 05:06:
This Ring Rally Sport in addition to Ring Sportz Violet headlight light sources, form component of numerous high wattage car or truck bulbs by Ring which might be designed intended for tough circumstances, and utilized by skilled drivers exactly who require a lot more powerful beam of light to superior illuminate this darkness. sportz up 
SerieALivescore meinte am 18. Feb, 05:06:
For anyone who is running that has a sports world-wide-web portal, then you definately must possibly be incredibly understandable around the significance for oneway links in structure of WEB OPTIMIZATION. Online journals play an exceptionally imperative functionality in building oneway links for ones sports web page. e sports hub 
SerieALivescore meinte am 18. Feb, 05:06:
Bunny hunting is usually enjoyable in addition to becomes a crucial duty as soon as rabbit volumes on almost any land positioning exceed reasonable numbers, and it also isn't a complicated sport. It can be seeing that simple to be a quiet go with from any of the dog breeds intended for hunting rabbits, your older single-shot as well as a pocketful connected with shells. sport rabbit 
SerieALivescore meinte am 18. Feb, 05:06:
For anyone who is ever about to learn to help cook such as Italians, you'll need to know to primary shop such as Italians. While preparing Italian food generally is a challenge, it might be made even more complicated if you forget to stock this cupboards while using the right ingredients to make meals. This means that you're going to have numerous stops for the local market that'll include: this meat portion, the organic stand, this fruit have, the rice's in addition to grains, and naturally the fish and shellfish section italian shopping 
SerieALivescore meinte am 18. Feb, 05:07:
It truly is fairly common right now to produce shopping expeditions to different cities with Europe or maybe further offshore and Florence certainly isn't a exception. With great buy flights in addition to great importance Florence apartments rentals to primary be snapped up, the funds is subsequently left prepared to take splash available. florence shopping 
SerieALivescore meinte am 18. Feb, 05:07:
If you want watches whether to be a gift or maybe for particular use, you better log on. This article will supply the reasons why you need to buy wristwatches online. Online check out shopping would be the trend currently. Do definitely not be found lacking and listen to more in this particular information. online watch shopping 
SerieALivescore meinte am 18. Feb, 05:07:
In the event their good friends are pill users, youth feel ignored if they just don't try the item. Social endorsement and recognition is significant in adolescence, who will still be developing the identity in addition to personal border. Often could be more of importance to a young person to participate in a collection, than that you follow common good sense. fashion is my drug 
SerieALivescore meinte am 18. Feb, 05:08:
Mots of people human wildlife resist transform. We be expecting everything to the similar, we expect what you should last for a long time, we be expecting the unattainable. Because as per the Rules of Mobility, the Rules of Increase, the Rules of Vibration along with the Law connected with Change everything was in constant motions and transform. oresky law