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The Review of Economics and Statistics Vol. 97 No. 5 2015

Under the Cover of Darkness: How Ambient Light Influences Criminal Activity

Jennifer L. Doleac1; Nicholas Sanders2

1 University of Virginia · 2 Cornell University

open access

Abstract

We exploit daylight saving time (DST) as an exogenous shock to daylight, using both the discontinuous nature of the policy and the 2007 extension of DST, to consider the impact of light on criminal activity. Regression discontinuity estimates show a 7% decrease in robberies following the shift to DST. As expected, effects are largest during the hours directly affected by the shift in daylight. We discuss our findings within the context of criminal decision making and labor supply, and estimate that the 2007 DST extension resulted in $59 million in annual social cost savings from avoided robberies.

DOI
10.1162/rest_a_00547
Volume
97
Issue
5
Pages
1093-1103
Language
en
Sources
openalex crossref

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