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Title: The Political Economy of Public Debt: A Laboratory Study

Author(s): Marco Battaglini, Salvatore Nunnari and Thomas R Palfrey

Publication Date: June 2016

Keyword(s): laboratory experiment and public debt

Programme Area(s): Public Economics

Abstract: This paper reports the results from a laboratory experiment designed to study political distortions in the accumulation of public debt. A legislature bargains over the levels of a public good and of district specific transfers in two periods. The legislature can issue or purchase risk-free bonds in the first period and the level of public debt creates a dynamic linkage across policymaking periods. In line with the theoretical predictions, we find that public policies are inefficient and efficiency is increasing in the size of the majority requirement, with higher investment in public goods and lower debt associated with larger majority requirements. Also in line with the theory, we find that debt is lower when the probability of a negative shock to the economy in the second period is higher, evidence that debt is used to smooth consumption.

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Bibliographic Reference

Battaglini, M, Nunnari, S and Palfrey, T. 2016. 'The Political Economy of Public Debt: A Laboratory Study'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=11357