Richwine: the average Nigerian is mentally retarded*

[FarCenter]

13. If you give IQ tests to people in different countries, you get different average scores

IQ test results have a standard deviation of about 15 points, so the distributions overlap considerably, i.e. there are high and low scorers in every country.

The difference in averages may be due to a variety of factors including cultural, nutrition, child rearing practices, genetic differences, etc.

IQ tests don't test anything related to the intrinsic worth of the individual, but if you are choosing military officers, managers of enterprises, or university faculty members, you will probably choose from the high scoring population. That is pretty much what they were developed to assist.

Since we don't know what part of natural differences are due to cultural, environmental or genetic factors, we don't know how much of the difference between nations will persist when people from various nations emigrate into the US. Environment is easily changed. Culture is not so easy to change, particularly with respect to child rearing practices handed down from mother to daughter.