Suckiologists: Isn't it funny that much of the skepticism about the validity of IQ tests has come from sociologists? These are people who often take ONE question from a survey as their measure of whatever it is they are studying, and then don't make any more effort to validate that it captures what they think it captures.
Psychometricians, by contrast, have obsessed for a very long time about questions of reliability and validity. IQ is typically measured with many, many items, each of which hase been tested extensively. There are subtests on top of subtests, and sophisticated statistical techniques like factor analysis and structural equation modeling have been developed to address these kinds of questions.
Psychologists have a reputation of going crazy over measurement issues on a puny sample of, say, 30 subjects. Sociologists, on the other hand, will measure their concept with one survey question asked of 10,000 respondents. And these jokers are complaining about IQ measurement?