saint_matthew wrote:At no point does he make either a correlative or causative connection between IQ and occupational status. He does make a correlative link between occupational status and IQ, but thats by no means the same statment.
Correlation between IQ and occupational status is the same thing as a correlation between occupational status and IQ. Correlation is a two-way statistic, all it means is that the variables vary together. If you run the comparison in statistical software you get the same number regardless of which is variable 1 and which is variable 2.
IQ =/= Knowledge
Red herring. Nowhere have I claimed it is. Perhaps you're (at least in part) misunderstanding my argument. The question under discussion is whether IQ tests are a valid indicator of intelligence.
To summarize my points:
1. Contradiction of your claim that engineers are likely to score 100 (average) on IQ tests. Engineers are in the top occupational status groups and income levels, both of which correlate with IQ. Intuitively, engineers must also be good at problem solving. Engineers are likely to score well above average. A web search for "IQ by occupation" will show some averages. You also claim that experts in a subject are not likely to have a higher than normal IQ. This is contradicted by the IQ-education/occupational success link. You haven't refuted either of these.
2. We define intelligence in a number of ways. IQ is correlated with several things which are commonly identified with intelligence - financial success, educational success, occupational performance, career status, scores on other exams such as school tests, brain size, etc. You haven't refuted any of this, only made the claim that this isn't true. These correlations can be found in a number of published sources, indicating you either don't believe those sources or have some other reason to disagree, which you haven't explained.
3. The ability to manipulate scores on a test through practice, rote memorization, or situational factors is a flimsy argument to consider the test invalid, since most tests can be "cheated" in these ways. Without specific intentional manipulation, retesting shows a reliable range of scores.