I think a study likke that would be too hard to conduct fairly. How would they get a consistant sampling of people from different races that they could give the same tests to? Seems like they could set it up to reflect any result they wanted.
Besides, everyone knows Asians are the smartest! lol

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1993 300E 2.8 185k miles
2006 Mustang Convertible 4.0 Eaton Supercharged