05-09-2008, 08:57 PM
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->metro:other-urban:rural:tribal segmentation?<!--QuoteEnd--><!--QuoteEEnd-->
I suspect the urban population has a higher IQ, there are a multitude of reasons for this, chief among them are literacy, better nutrition, and health care. It is the same thing with height, urban pop is taller on avg, and 2nd generation NRI kids will tend to be taller than Indians (due to diet, healthcare etc). I cannot speculate on the IQ of tribals without any hard data.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->gender segmentation?<!--QuoteEnd--><!--QuoteEEnd-->
Specifically for India, I have no idea, but in general girls have superior verbal ability at least in the early years, from age 10 onwards boys show greater visuo-spatial and mathematical abilities, this difference has been found consistently across many studies.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->age-demographics has any role?<!--QuoteEnd--><!--QuoteEEnd-->
IQ is calculated as Mental Age/ Chronological Age * 100.
The Mental Age you are assigned is based on your IQ score, now beyond a certain point your IQ scores stop increasing and you stabilize, but your CA keeps increasing, so there is a decline in IQ with aging I think.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->any idea on jains?<!--QuoteEnd--><!--QuoteEEnd-->
No, but from what I know a number of Marwaris are Jain, so their IQ must be quite high, although you can't generalize that to the Jains in Karnataka.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->religious attitude break-up (religious-nonreligious) play a role?<!--QuoteEnd--><!--QuoteEEnd-->
I am not sure about this, haven't come across any studies comparing IQ scores of nonreligious (atheist, agnostic etc but without any belief in Karma like the Jains) and religious.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->what about areas that were not subjugated by muhammedan savagery? e.g. North East, esp Assam? Nepal? Tibet? <!--QuoteEnd--><!--QuoteEEnd-->
That is a good question, and sorry to say there haven't been many studies in those areas from what I know.
But I suspect their IQ to be higher, also some of the tribes in North East are migrants from China in the last few centuries, and Chinese have high IQs, so the same may be true for them.
The explanation offered by G.Sub makes sense, in the North Muslims often selectively targeted the elite, while the South and North East escaped any such large scale ravages, so that should also play a role in IQ variance within India.
The problem with India is that unlike China or South Korea it is a highly diverse society with thousands of endogamous castes, and in cases like that it is hard to generalize findings from one region or one caste to the rest of the country.
On a separate note many "educated" Indians in my observation seem to be very ignorant of the latest findings and repeat the dogma they were taught in school that all of us have equal abilities and all the differences are due to environment, nothing could be further from the truth, a substantial amount of our characteristics are inherited. Here are some stats I found in a book:
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->Relationship of Family members      Correlation between IQ scores
Identical twins reared together               .86
Identical twins reared apart                  .79
Fraternal twins reared together               .60
Siblings reared together                    .47
Parent and child                         .40
Foster parent and child                    .31
Siblings reared apart                      .24
Cousins                               .15<!--QuoteEnd--><!--QuoteEEnd-->
These stats are compiled based on 111 studies all over the world and can be found in Child Psychology: A Contemporary View Point (2nd Canadian Edition).
The closer the genetic relation between 2 people, the higher the correlation between their IQ scores.
There are also consistent IQ differences between ethnic groups, for example Black Americans avg IQ is 85 and has stayed there for the past decade (up from 70 in the earlier era due to the Flynn effect) while Americans of European descent average 100, and Hispanic Americans avg around 90.
Now of course come out a flurry of explanations about how IQ tests are culturally biased etc, but are they only biased against African Americans?
Because even with the bias present we see the Chinese avg score being over a 100, also keep in mind that these tests were developed in the West primarily and hence should be even more biased against the Chinese than African Americans (who are more American than African and have been there for centuries in US). Also keep in mind that the average African American is better off when compared to the average Chinese in terms of health care, nutrition, wealth etc because America is a developed country, and even its poorest sections have a far better life than the avg low income person in Africa, China, India, or Brazil.
Whether the IQ differences between different nationalities are due to genes, environment, or an interaction between the 2 factors is a different topic altogether, but IQ differences have been consistently found and there is no escaping this fact by shouting Manuvadi or some other epithet like many "educated" Indians seem to do.
I suspect the urban population has a higher IQ, there are a multitude of reasons for this, chief among them are literacy, better nutrition, and health care. It is the same thing with height, urban pop is taller on avg, and 2nd generation NRI kids will tend to be taller than Indians (due to diet, healthcare etc). I cannot speculate on the IQ of tribals without any hard data.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->gender segmentation?<!--QuoteEnd--><!--QuoteEEnd-->
Specifically for India, I have no idea, but in general girls have superior verbal ability at least in the early years, from age 10 onwards boys show greater visuo-spatial and mathematical abilities, this difference has been found consistently across many studies.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->age-demographics has any role?<!--QuoteEnd--><!--QuoteEEnd-->
IQ is calculated as Mental Age/ Chronological Age * 100.
The Mental Age you are assigned is based on your IQ score, now beyond a certain point your IQ scores stop increasing and you stabilize, but your CA keeps increasing, so there is a decline in IQ with aging I think.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->any idea on jains?<!--QuoteEnd--><!--QuoteEEnd-->
No, but from what I know a number of Marwaris are Jain, so their IQ must be quite high, although you can't generalize that to the Jains in Karnataka.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->religious attitude break-up (religious-nonreligious) play a role?<!--QuoteEnd--><!--QuoteEEnd-->
I am not sure about this, haven't come across any studies comparing IQ scores of nonreligious (atheist, agnostic etc but without any belief in Karma like the Jains) and religious.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->what about areas that were not subjugated by muhammedan savagery? e.g. North East, esp Assam? Nepal? Tibet? <!--QuoteEnd--><!--QuoteEEnd-->
That is a good question, and sorry to say there haven't been many studies in those areas from what I know.
But I suspect their IQ to be higher, also some of the tribes in North East are migrants from China in the last few centuries, and Chinese have high IQs, so the same may be true for them.
The explanation offered by G.Sub makes sense, in the North Muslims often selectively targeted the elite, while the South and North East escaped any such large scale ravages, so that should also play a role in IQ variance within India.
The problem with India is that unlike China or South Korea it is a highly diverse society with thousands of endogamous castes, and in cases like that it is hard to generalize findings from one region or one caste to the rest of the country.
On a separate note many "educated" Indians in my observation seem to be very ignorant of the latest findings and repeat the dogma they were taught in school that all of us have equal abilities and all the differences are due to environment, nothing could be further from the truth, a substantial amount of our characteristics are inherited. Here are some stats I found in a book:
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->Relationship of Family members      Correlation between IQ scores
Identical twins reared together               .86
Identical twins reared apart                  .79
Fraternal twins reared together               .60
Siblings reared together                    .47
Parent and child                         .40
Foster parent and child                    .31
Siblings reared apart                      .24
Cousins                               .15<!--QuoteEnd--><!--QuoteEEnd-->
These stats are compiled based on 111 studies all over the world and can be found in Child Psychology: A Contemporary View Point (2nd Canadian Edition).
The closer the genetic relation between 2 people, the higher the correlation between their IQ scores.
There are also consistent IQ differences between ethnic groups, for example Black Americans avg IQ is 85 and has stayed there for the past decade (up from 70 in the earlier era due to the Flynn effect) while Americans of European descent average 100, and Hispanic Americans avg around 90.
Now of course come out a flurry of explanations about how IQ tests are culturally biased etc, but are they only biased against African Americans?
Because even with the bias present we see the Chinese avg score being over a 100, also keep in mind that these tests were developed in the West primarily and hence should be even more biased against the Chinese than African Americans (who are more American than African and have been there for centuries in US). Also keep in mind that the average African American is better off when compared to the average Chinese in terms of health care, nutrition, wealth etc because America is a developed country, and even its poorest sections have a far better life than the avg low income person in Africa, China, India, or Brazil.
Whether the IQ differences between different nationalities are due to genes, environment, or an interaction between the 2 factors is a different topic altogether, but IQ differences have been consistently found and there is no escaping this fact by shouting Manuvadi or some other epithet like many "educated" Indians seem to do.