Broken windows: the metaphor has changed New York and Los Angeles. Yet it is far from undisputed whether the broken windows policy was causal for reducing crime. The scope of the theory is not confined to crime. The theory claims that crime is inextricably linked to social order more generally....

In this paper, we test the effect of normative expectations and legal framing on cooperation in an experimental public good game with and without sanctions. We show that cooperation increases substantially as normative expectations and behavioral patterns coevolve. In the absence of sanctions,...