What IQ would you correlate to the SAT numbers, considering?
SAT scores, combined with the year that it was taken in, give you a percentile measure of that person (compared to test-takers, which is different from the general population, but in a fairly predictable way), which you can then turn into an IQ-equivalent.
I say equivalent because there are a number of issues. First, intelligence testing has a perennial problem that absolute intelligence and relative intelligence are different things. Someone who is 95th percentile compared to high school students in 1962 is not the same as someone who is 95th percentile compared to high school students in 2012. It might also be more meaningful to say something like “the median LWer can store 10 numbers in working memory, compared to the general population’s median of 7” instead of “the median LWer has a working memory that’s 95th percentile.” (I also haven’t looked up recently how g-loaded the SAT is, and that could vary significantly over time.)
Second, one of the main benefits may not be that the median LWer is able to get into MENSA, but that the smartest LWers are cleverer than most people have had the chance to meet during the lives. This is something that IQ tests are not very good at measuring, especially if you try to maintain the normal distribution. Reliably telling the difference between someone who is 1 out of 1,000 (146) and someone who is 1 out of 10,000 (155) is too difficult for most current tests; how many people would you have to base your test off of to reliably tell that someone is one out of a million (171) from their raw score?
As for the Raven’s numbers, I am not sure where you’re getting them from. I don’t see a column when searching for “raven” in the 2012 spreadsheet, nor do I see “raven” on the survey result threads.
iqtest.dk is based on Raven’s Progressive Matrices; the corresponding column, CV in the public .xls, is called IQTest. I referred to the scores that way because Raven’s measures a particular variety of intelligence. It’s seen widespread adoption because it’s highly g-loaded and culture fair, but a score on Raven’s is subtly different from a total score on WAIS, for example.
SAT scores, combined with the year that it was taken in, give you a percentile measure of that person (compared to test-takers, which is different from the general population, but in a fairly predictable way), which you can then turn into an IQ-equivalent.
I say equivalent because there are a number of issues. First, intelligence testing has a perennial problem that absolute intelligence and relative intelligence are different things. Someone who is 95th percentile compared to high school students in 1962 is not the same as someone who is 95th percentile compared to high school students in 2012. It might also be more meaningful to say something like “the median LWer can store 10 numbers in working memory, compared to the general population’s median of 7” instead of “the median LWer has a working memory that’s 95th percentile.” (I also haven’t looked up recently how g-loaded the SAT is, and that could vary significantly over time.)
Second, one of the main benefits may not be that the median LWer is able to get into MENSA, but that the smartest LWers are cleverer than most people have had the chance to meet during the lives. This is something that IQ tests are not very good at measuring, especially if you try to maintain the normal distribution. Reliably telling the difference between someone who is 1 out of 1,000 (146) and someone who is 1 out of 10,000 (155) is too difficult for most current tests; how many people would you have to base your test off of to reliably tell that someone is one out of a million (171) from their raw score?
iqtest.dk is based on Raven’s Progressive Matrices; the corresponding column, CV in the public .xls, is called IQTest. I referred to the scores that way because Raven’s measures a particular variety of intelligence. It’s seen widespread adoption because it’s highly g-loaded and culture fair, but a score on Raven’s is subtly different from a total score on WAIS, for example.