Hmm. I wonder how subtle tetrachromatism can be, and how unsubtle that test is. I have the other markers - colorblind people in my close family - and I've always noticed that I can see subtle gradations in color that other people can't. (I used to work in a print shop, so it came up. A lot.) That article talks about difference in the wavelength sensitivities of the fourth cone as the defining factor. I can test this! Eeeeenteresting.
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timeasmymeasure
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Date: 2009-01-23 02:15 am (UTC)Eeeeenteresting.