( *_* )

In one experiment, a temporary fence was used to close off a short cut to a car park, except for a narrow gap. Two signs were erected, one telling people there was no throughway and the other saying that bicycles must not be left locked to the fence. In the “order” condition (with four bicycles parked nearby, but not locked to the fence) 27% of people were prepared to trespass by stepping through the gap, whereas in the disorder condition (with the four bikes locked to the fence, in violation of the sign) 82% took the short cut.