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.
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.