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Originally Posted by willravel
Double blind helps to keep people honest. I'd want to see how the study was done to ensure fairness and reliability of the numbers and to give the outcome proper context.
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I'm aware of what a double-blind test is - both experimenters and participants are unaware of the experimental group the participant is in. I'm just curious to know how it would be done using the correlational methods used in intelligence research. If you are studying IQ, typically you are collecting data on a variety of demographic variables up front, including race. IQ tests are typically administered using paper and pencil forms. 1) How will you blind the paper form to race? 2) How will you blind the participant to their own race?
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Speaking briefly to the IQ test, assuming you have people who have similar backgrounds and cultural influences of different races are tested, and then having more and more of that, it's not unreasonable to think the data may be reliable.
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I'm not sure what you mean. If people have similar backgrounds, how can you test cultural influences? If you mean that they all need to come from similar socioeconomic status, they do not. Differences in IQ due to SES (or any other variable) can be controlled statistically as long as you have a sufficient sample size. I do agree that more studies showing the same results increases confidence in the validity of the results.
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Yes, the IQ test is not the end all be all of measures of intelligence, but it's one of the best tools we have.
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The standard IQ test (probably the WAIS) is probably the most valid test of intelligence that exists.