
The only significant variable in the experiments was the ambient lighting in the spaces where study participants sat. Researchers used a series of fluorescent lamps that produced red, blue, green or white light. People rated the wine’s quality higher, in general, when they drank it in a room whose ambient lighting was red or blue versus green or white. They also found the test wine much sweeter and fruitier when sampled in a room illuminated by red-tinted fluorescent lamps, and were willing to spend more for it.
Hat tip National Lighting Bureau.





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