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You speak as if these issues have not been studied to death a generation ago already. Jensen’s “Bias in mental testing”, a nearly 800 pages volume full of refer

by xyzzyz 5y ago

You speak as if these issues have not been studied to death a generation ago already. Jensen’s “Bias in mental testing”, a nearly 800 pages volume full of references, covers it rather extensively, and it came out 40 years ago. What makes me self assured here is that best counter arguments to the body of scientific research I read on this topic that I hear is people musing about some hypothetical IQ tests that might possibly ask about baseball. I mean, consider Raven’s progressive matrices. It’s not the best IQ test (for reasons other than knowledge bias), but it correlated very well with WAIS and Stanford-Binet, two most popular and arguably the best IQ test. It asks for no knowledge of baseball, regattas, or anything else, in fact, it used no words at all. How comes that it nevertheless gives the same results as other, allegedly biased IQ tests? What exactly makes it biased, and why in exactly the same direction as other tests?

sudosysgen 5y ago
It doesn't give the same results as other IQ tests, it's correlation is nowhere near as strong as you let on, the average expected difference is 2/3rds of a standard deviation. Beyond that, yes, RPM is culturally biased. If you have experience with basic geometrical manipulations and bitmap manipulation you will find it much easier. For example if you have CS training you will notice that half or more of the questions in many RPM style tests are basically XORing two images together, with a small twist some times. You'll also find it difficult to argue that that people who culturally do less manipulation and work on paper or on a screen will have a more difficult time. Beyond that, there is clearly a body of research that finds IQ tests to be culturally loaded, and solid research that shows that even further studies in the same society where the IQ test was developped has a significant and measurable impact.

by xyzzyz 5y ago

sudosysgen 5y ago

It doesn't give the same results as other IQ tests, it's correlation is nowhere near as strong as you let on, the average expected difference is 2/3rds of a standard deviation. Beyond that, yes, RPM is culturally biased. If you have experience with basic geometrical manipulations and bitmap manipulation you will find it much easier. For example if you have CS training you will notice that half or more of the questions in many RPM style tests are basically XORing two images together, with a small twist some times. You'll also find it difficult to argue that that people who culturally do less manipulation and work on paper or on a screen will have a more difficult time. Beyond that, there is clearly a body of research that finds IQ tests to be culturally loaded, and solid research that shows that even further studies in the same society where the IQ test was developped has a significant and measurable impact.