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Beepbeep n beebeep, yeah!
Posts: 11,726
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Join Date: Apr 2008
Location: La Crosse, Wisconsin, aka America's IceBox
Device: iThingie, KmkII, I miss Zelda!
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Studies on that are rife with bias, depending on the bias of the studier. I don't know of any peer reviewed post hoc evaluations that show "proof" either way. Obviously, a double blind controlled study woul have a few problems getting past the human use committee.
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