Philip Cook of Duke University talks to Romesh Vaitilingam about cost-effective ways of reducing crime. They discuss his own research on private contributions to public order, as well as the potential impact on crime of higher taxes on alcohol, 'coerced abstinence' for convicted criminals, and social policies that may deter people from becoming criminals. The interview was recorded at the Royal Economic Society's annual conference at the University of Surrey in March 2010.