Building Peace: The Impact of Aid on the Labor Market for Insurgents
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- Raphael, Steven & Winter-Ember, Rudolf, 2001.
"Identifying the Effect of Unemployment on Crime,"
Journal of Law and Economics, University of Chicago Press, vol. 44(1), pages 259-283, April.
- Raphael, Steven & WINTER-EBMER, RUDOLF, 1998. "Identifying the Effect of Unemployment on Crime," University of California at San Diego, Economics Working Paper Series qt5hb4h56g, Department of Economics, UC San Diego.
- Raphael, Steven & Winter-Ebmer, Rudolf, 1999. "Identifying the Effect of Unemployment on Crime," CEPR Discussion Papers 2129, C.E.P.R. Discussion Papers.
- Berman, Eli & Laitin, David D., 2008.
"Religion, terrorism and public goods: Testing the club model,"
Journal of Public Economics, Elsevier, vol. 92(10-11), pages 1942-1967, October.
- Eli Berman & David D. Laitin, 2008. "Religion, Terrorism and Public Goods: Testing the Club Model," NBER Working Papers 13725, National Bureau of Economic Research, Inc.
- Klor, Esteban & Berrebi, Claude & Benmelech, Efraim, 2010.
"Economic Conditions and the Quality of Suicide Terrorism,"
CEPR Discussion Papers
7995, C.E.P.R. Discussion Papers.
- Efraim Benmelech & Claude Berrebi & Esteban F. Klor, 2010. "Economic Conditions and the Quality of Suicide Terrorism," NBER Working Papers 16320, National Bureau of Economic Research, Inc.
- Gary S. Becker, 1974.
"Crime and Punishment: An Economic Approach,"
NBER Chapters, in: Essays in the Economics of Crime and Punishment, pages 1-54,
National Bureau of Economic Research, Inc.
- Gary S. Becker, 1968. "Crime and Punishment: An Economic Approach," Journal of Political Economy, University of Chicago Press, vol. 76(2), pages 169-169.
- Eli Berman & Jacob N. Shapiro & Joseph H. Felter, 2011.
"Can Hearts and Minds Be Bought? The Economics of Counterinsurgency in Iraq,"
Journal of Political Economy, University of Chicago Press, vol. 119(4), pages 766-819.
- Eli Berman & Jacob N. Shapiro & Joseph H. Felter, 2008. "Can Hearts and Minds Be Bought? The Economics of Counterinsurgency in Iraq," NBER Working Papers 14606, National Bureau of Economic Research, Inc.
- Macartan Humphreys & Jeremy M. Weinstein, 2008. "Who Fights? The Determinants of Participation in Civil War," American Journal of Political Science, John Wiley & Sons, vol. 52(2), pages 436-455, April.
- Collier, Paul, 2008. "The Bottom Billion: Why the Poorest Countries are Failing and What Can Be Done About It," OUP Catalogue, Oxford University Press, number 9780195374636.
- Alan B. Krueger & Jitka Maleckova, 2003. "Education, Poverty and Terrorism: Is There a Causal Connection?," Journal of Economic Perspectives, American Economic Association, vol. 17(4), pages 119-144, Fall.
- Radha Iyengar & Jonathan Monten, 2008. "Is There an "Emboldenment" Effect? Evidence from the Insurgency in Iraq," NBER Working Papers 13839, National Bureau of Economic Research, Inc.
- Entorf, Horst & Spengler, Hannes, 2000.
"Socioeconomic and demographic factors of crime in Germany: Evidence from panel data of the German states,"
International Review of Law and Economics, Elsevier, vol. 20(1), pages 75-106, March.
- Entorf, Horst & Spengler, Hannes, 1998. "Socio-economic and demographic factors of crime in Germany: evidence from panel data of the German states," ZEW Discussion Papers 98-16, ZEW - Leibniz Centre for European Economic Research.
- Entorf, Horst & Spengler, Hannes, 2000. "Socio-economic and demographic factors of crime in Germany: evidence from panel data of the German States," Publications of Darmstadt Technical University, Institute for Business Studies (BWL) 24110, Darmstadt Technical University, Department of Business Administration, Economics and Law, Institute for Business Studies (BWL).
- Eric D. Gould & Bruce A. Weinberg & David B. Mustard, 2002. "Crime Rates And Local Labor Market Opportunities In The United States: 1979-1997," The Review of Economics and Statistics, MIT Press, vol. 84(1), pages 45-61, February.
- Matthew A. Hanson, 2007. "The Economics of Roadside Bombs," Working Papers 68, Department of Economics, College of William and Mary.
- Radha Iyengar, 2008. "I'd rather be Hanged for a Sheep than a Lamb: The Unintended Consequences of 'Three-Strikes' Laws," NBER Working Papers 13784, National Bureau of Economic Research, Inc.
- Edward Miguel & Shanker Satyanath & Ernest Sergenti, 2004. "Economic Shocks and Civil Conflict: An Instrumental Variables Approach," Journal of Political Economy, University of Chicago Press, vol. 112(4), pages 725-753, August.
- James J. Heckman & Thomas E. Macurdy, 1980. "A Life Cycle Model of Female Labour Supply," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 47(1), pages 47-74.
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Cited by:
- Thiemo Fetzer, 2020.
"Can Workfare Programs Moderate Conflict? Evidence from India,"
Journal of the European Economic Association, European Economic Association, vol. 18(6), pages 3337-3375.
- Fetzer, Thiemo, 2019. "Can Workfare Programs Moderate Conflict? Evidence from India," CAGE Online Working Paper Series 436, Competitive Advantage in the Global Economy (CAGE).
- Marshall Burke & Solomon M. Hsiang & Edward Miguel, 2015.
"Climate and Conflict,"
Annual Review of Economics, Annual Reviews, vol. 7(1), pages 577-617, August.
- Marshall Burke & Solomon M. Hsiang & Edward Miguel, 2014. "Climate and Conflict," NBER Working Papers 20598, National Bureau of Economic Research, Inc.
- Burke, Marshall & Hsiang, Solomon M & Miguel, Edward, 2015. "Climate and Conflict," Department of Economics, Working Paper Series qt41d8p9fh, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
- Thiemo Fetzer & Pedro C. L. Souza & Oliver Vanden Eynde & Austin L. Wright, 2021.
"Security Transitions,"
American Economic Review, American Economic Association, vol. 111(7), pages 2275-2308, July.
- Fetzer, Thiemo & Souza, Pedro CL & Eynde, Oliver Vanden & Wright, Austin L., 2018. "Security Transitions," CAGE Online Working Paper Series 383, Competitive Advantage in the Global Economy (CAGE).
- Thiemo Fetzer & Pedro Cl Souza & Oliver Vanden Eynde & Austin Wright, 2021. "Security Transitions," Post-Print halshs-03342741, HAL.
- Thiemo Fetzer & Pedro Cl Souza & Oliver Vanden Eynde & Austin Wright, 2021. "Security Transitions," PSE-Ecole d'économie de Paris (Postprint) halshs-03342741, HAL.
- Thiemo Fetzer & Pedro Cl Souza & Oliver Vanden Eynde & Austin L Wright, 2020. "Security Transitions," Working Papers halshs-02518234, HAL.
- Thiemo Fetzer & Pedro Cl Souza & Oliver Vanden Eynde & Austin L Wright, 2020. "Security Transitions," PSE Working Papers halshs-02518234, HAL.
- Thiemo Fetzer & Pedro CL Souza & Oliver Vanden Eynde & Austin L. Wright, 2020. "Security Transitions," Working Papers 2020-176, Becker Friedman Institute for Research In Economics.
- Fetzer, Thiemo & Vanden Eynde, Oliver & Wright, Austin L., 2018. "Security Transitions," The Warwick Economics Research Paper Series (TWERPS) 1171, University of Warwick, Department of Economics.
- Fetzer, Thiemo & Vanden Eynde, Oliver & Souza, Pedro CL & Wright, Austin L., 2020. "Security Transitions," CEPR Discussion Papers 15527, C.E.P.R. Discussion Papers.
- Saurabh Singhal & Rahul Nilakantan, 2012. "Naxalite Insurgency and the Economic Benefits of a Unique Robust Security Response," HiCN Working Papers 127, Households in Conflict Network.
- Travers Barclay Child & Elena Nikolova, 2017. "War and Social Attitudes: Revisiting Consensus Views," HiCN Working Papers 258, Households in Conflict Network.
- Anke Hoeffler & Patricia Justino, 2024.
"Aid and fragile states,"
Chapters, in: Raj M. Desai & Shantayanan Devarajan & Jennifer L. Tobin (ed.), Handbook of Aid and Development, chapter 14, pages 225-246,
Edward Elgar Publishing.
- Anke Hoeffler & Patricia Justino, 2023. "Aid and fragile states," WIDER Working Paper Series wp-2023-83, World Institute for Development Economic Research (UNU-WIDER).
- Willa Friedman, 2013. "Local Economic Conditions and Participation in the Rwandan Genocide," HiCN Working Papers 160, Households in Conflict Network.
- Thiemo Fetzer, 2014. "Can Workfare Programs Moderate Violence? Evidence from India," STICERD - Economic Organisation and Public Policy Discussion Papers Series 053, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
- Heidi Kaila & Saurabh Singhal & Divya Tuteja, 2017.
"Do fences make good neighbours?: Evidence from an insurgency in India,"
WIDER Working Paper Series
wp-2017-158, World Institute for Development Economic Research (UNU-WIDER).
- Heidi Kaila & Saurabh Singhal & Divya Tuteja, 2019. "Do Fences Make Good Neighbors? Evidence from an Insurgency in India," HiCN Working Papers 297, Households in Conflict Network.
- Heidi Kaila & Saurabh Singhal & Divya Tuteja, 2018. "Do Fences Make Good Neighbors? Evidence from an Insurgency in India," HiCN Working Papers 287, Households in Conflict Network.
- Benjamin Crost & Joseph H. Felter & Hani Mansour & Daniel I. Rees, 2013.
"Election Fraud and Post-Election Conflict: Evidence from the Philippines,"
HiCN Working Papers
158, Households in Conflict Network.
- Crost, Benjamin & Felter, Joseph & Mansour, Hani & Rees, Daniel I., 2013. "Election Fraud and Post-Election Conflict: Evidence from the Philippines," IZA Discussion Papers 7469, Institute of Labor Economics (IZA).
- Christoph Mikulaschek & Jacob N. Shapiro, 2018. "Lessons on Political Violence from America’s Post–9/11 Wars," Journal of Conflict Resolution, Peace Science Society (International), vol. 62(1), pages 174-202, January.
- Heidi Kaila & Saurabh Singhal & Divya Tuteja, 2017. "Do fences make good neighbours? Evidence from an insurgency in India," WIDER Working Paper Series 158, World Institute for Development Economic Research (UNU-WIDER).
- Fetzer, Thiemo, 2019. "Can Workfare Programs Moderate Conflict? Evidence from India," The Warwick Economics Research Paper Series (TWERPS) 1220, University of Warwick, Department of Economics.
- Miaari, Sami & Zussman, Asaf & Zussman, Noam, 2014.
"Employment restrictions and political violence in the Israeli–Palestinian conflict,"
Journal of Economic Behavior & Organization, Elsevier, vol. 101(C), pages 24-44.
- Sami Miaari & Asaf Zussman & Noam Zussman, 2012. "Employment Restrictions and Political Violence in the Israeli-Palestinian Conflict," Bank of Israel Working Papers 2012.04, Bank of Israel.
- Sami Miaari & Asaf Zussman & Noam Zussman, 2012. "Employment Restrictions and Political Violence in the Israeli-Palestinian Conflict," Economics of Security Working Paper Series 59, DIW Berlin, German Institute for Economic Research.
- Zürcher, Christoph, 2017. "What Do We (Not) Know About Development Aid and Violence? A Systematic Review," World Development, Elsevier, vol. 98(C), pages 506-522.
- Travers Barclay Child, 2017. "We Don’t Need No Education: Reconstruction and Conflict across Afghanistan," HiCN Working Papers 244, Households in Conflict Network.
- Kaila, Heidi & Singhal, Saurabh & Tuteja, Divya, 2020. "Development programs, security, and violence reduction: Evidence from an insurgency in India," World Development, Elsevier, vol. 130(C).
- Thiemo Fetzer, 2014. "Can Workfare Programs Moderate Violence? Evidence from India," STICERD - Economic Organisation and Public Policy Discussion Papers Series 53, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
- Guardado,Jenny & Pennings,Steven Michael, 2020. "The Seasonality of Conflict," Policy Research Working Paper Series 9373, The World Bank.
- Eli Berman & Joseph Felter & Ethan Kapstein & Erin Troland, 2012.
"Predation, Taxation, Investment, and Violence: Evidence from the Philippines,"
NBER Working Papers
18375, National Bureau of Economic Research, Inc.
- Berman, Eli & Felter, Joseph & Kapstein, Ethan & Troland, Erin, 2014. "Predation, Taxation, Investment, and Violence: Evidence from the Philippines," 2014: Food, Resources and Conflict, December 7-9, 2014. San Diego, California 197197, International Agricultural Trade Research Consortium.
- Eli Berman & Joseph Felter & Ethan Kapstein & Erin Troland, 2013. "Predation, Taxation, Investment and Violence: Evidence from the Philippines," NBER Working Papers 19266, National Bureau of Economic Research, Inc.
- Benjamin Crost & Joseph H Felter & Hani Mansour & Daniel I Rees, 0.
"Narrow Incumbent Victories and Post-Election Conflict: Evidence from the Philippines,"
The World Bank Economic Review, World Bank, vol. 34(3), pages 767-789.
- Crost,Benjamin & Felter,Joseph H. & Mansour,Hani & Rees,Daniel I., 2020. "Narrow Incumbent Victories and Post-Election Conflict : Evidence from the Philippines," Policy Research Working Paper Series 9126, The World Bank.
- Beath,Andrew & Christia,Fotini & Enikolopov,Ruben & Beath,Andrew & Christia,Fotini & Enikolopov,Ruben, 2012. "Winning hearts and minds through development ? evidence from a field experiment in Afghanistan," Policy Research Working Paper Series 6129, The World Bank.
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More about this item
JEL classification:
- J2 - Labor and Demographic Economics - - Demand and Supply of Labor
- J4 - Labor and Demographic Economics - - Particular Labor Markets
- O17 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Formal and Informal Sectors; Shadow Economy; Institutional Arrangements
NEP fields
This paper has been announced in the following NEP Reports:- NEP-LAB-2011-08-29 (Labour Economics)
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