In a test of the theory, Kees Keizer of the University of Groningen in the Netherlands asked whether cues of one type of norm violation made people prone to violating other norms.39 When bicycles were chained to a fence {despite a sign forbidding it}, people were more likely to take a shortcut through a gap in the fence {despite a sign forbidding it}; people littered more when walls were graffitied; people were more likely to steal a five-euro note when litter was strewn around. These were big effects, with doubling rates of crummy behaviors. A norm violation increasing the odds of that same norm being violated is a conscious process. But when the sound of fireworks makes someone more likely to litter, more unconscious processes are at work.
( Robert M. Sapolsky )
[ Behave: The Biology of Humans ]
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