Eyes often have an implicit censorious power.22 Post a large picture of a pair of eyes at a bus stop {versus a picture of flowers}, and people become more likely to clean up litter. Post a picture of eyes in a workplace coffee room, and the money paid on the honor system triples. Show a pair of eyes on a computer screen and people become more generous in online economic games.
( Robert M. Sapolsky )
[ Behave: The Biology of Humans ]
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