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Everyone I've seen who's posted on LJ their results to that Approximate Numbers test has done at least as good or better than I did. It reminds me of one of my earliest LJ posts. :-)
One of the things I was noticing while doing that test was that the yellow dots were showing up on my screen a lot brighter and more noticeable than the blue dots (I suspect it's that way on most people's displays). Due to this, I biased my answers towards blue - if the number of blue and yellow dots seemed similar, I answered blue. It probably would be a more accurate test of people's skills if they used colors of the same brightness, although then I guess it would have been harder to tell the dots apart in the brief glimpses one got.
Something I noticed while doing the face memory tests is that the faces were all male. And they seemed to have mostly European racial features. I wonder if people from Africa or east Asia would do worse on these tests, because they are more familiar with a different set of facial features. Or if that would not affect the results, because the facial features that are varied in the test pretty much vary the same ways among different racial groups?
One of the things I was noticing while doing that test was that the yellow dots were showing up on my screen a lot brighter and more noticeable than the blue dots (I suspect it's that way on most people's displays). Due to this, I biased my answers towards blue - if the number of blue and yellow dots seemed similar, I answered blue. It probably would be a more accurate test of people's skills if they used colors of the same brightness, although then I guess it would have been harder to tell the dots apart in the brief glimpses one got.
Something I noticed while doing the face memory tests is that the faces were all male. And they seemed to have mostly European racial features. I wonder if people from Africa or east Asia would do worse on these tests, because they are more familiar with a different set of facial features. Or if that would not affect the results, because the facial features that are varied in the test pretty much vary the same ways among different racial groups?