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Incentivizing Safer Sexual Behavior: Evidence from a Lottery Experiment on HIV Prevention

45 Pages Posted: 3 Oct 2016  

Martina Bjorkman Nyqvist

Stockholm School of Economics

Lucia Corno

Queen Mary, University of London

Damien de Walque

World Bank; World Bank - Development Research Group (DECRG)

Jakob Svensson

Stockholm University - Institute for International Economic Studies (IIES); Centre for Economic Policy Research (CEPR)

Date Written: September 2016

Abstract

The need for effective HIV prevention programs, especially in Sub-Saharan Africa, remains urgent. We investigate the effect of a financial lottery program in Lesotho with relatively low expected payments but a chance to win a high prize conditional on negative test results for sexually transmitted infections. The intervention resulted in a 21.4% reduction in HIV incidence over two years. Lottery incentives appear to be particularly effective in targeting individuals with ex ante risky sexual behavior, consistent with the hypothesis that lotteries are more valued by individuals willing to take risks.

Keywords: Financial incentives, HIV prevention, lotteries

JEL Classification: I12, I15, O15

Suggested Citation

Bjorkman Nyqvist, Martina and Corno, Lucia and de Walque, Damien and Svensson, Jakob, Incentivizing Safer Sexual Behavior: Evidence from a Lottery Experiment on HIV Prevention (September 2016). CEPR Discussion Paper No. DP11542. Available at SSRN: https://ssrn.com/abstract=2847076

Martina Bjorkman Nyqvist (Contact Author)

Stockholm School of Economics ( email )

PO Box 6501
Stockholm, 11383
Sweden

Lucia Corno

Queen Mary, University of London ( email )

Mile End Road
London, London E1 4NS
United Kingdom

Damien De Walque

World Bank ( email )

1818 H Street, N.W.
Washington, DC 20433
United States

HOME PAGE: http://econ.worldbank.org/staff/ddewalque

World Bank - Development Research Group (DECRG)

1818 H. Street, N.W.
MSN3-311
Washington, DC 20433
United States

Jakob Svensson

Stockholm University - Institute for International Economic Studies (IIES) ( email )

Stockholm, SE-10691
Sweden
+46 8 163 060 (Phone)
+46 8 161 443 (Fax)

Centre for Economic Policy Research (CEPR)

77 Bastwick Street
London, EC1V 3PZ
United Kingdom

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