Publication: The Relevance of a Rules-Based Maize Marketing Policy: An Experimental Case Study of Zambia
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Date
2011
ISSN
00220388
Published
2011
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Strategic interaction between public and private actors is increasingly recognised as an important determinant of agricultural market performance in Africa and elsewhere. Trust and consultation tends to positively affect private activity while uncertainty of government behaviour impedes it. This paper reports on a laboratory experiment based on a stylised model of the Zambian maize market. The experiment facilitates a comparison between discretionary interventionism and a rules-based policy in which the government pre-commits itself to a future course of action. A simple precommitment rule can, in theory, overcome the prevailing strategic dilemma by encouraging private sector participation. Although this result is also borne out in the economic experiment, the improvement in private sector activity is surprisingly small and not statistically significant due to irrationally cautious choices by experimental governments. Encouragingly, a rules-based policy promotes a much more stable market outcome thereby substantially reducing the risk of severe food shortages. These results underscore the importance of predictable and transparent rules for the state's involvement in agricultural markets.
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Publication The Relevance of a Rules-Based Maize Marketing Policy : An Experimental Case Study of Zambia(World Bank, Washington, DC, 2008-09)Strategic interaction between public and private actors is increasingly recognized as an important determinant of agricultural market performance in Africa and elsewhere. Trust and consultation tend to positively affect private activity while uncertainty of government behavior impedes it. This paper reports on a laboratory experiment based on a stylized model of the Zambian maize market. The experiment facilitates a comparison between discretionary interventionism and a rules-based policy in which the government pre-commits itself to a future course of action. A simple precommitment rule can, in theory, overcome the prevailing strategic dilemma by encouraging private sector participation. Although this result is also borne out in the economic experiment, the improvement in private sector activity is surprisingly small and not statistically significant due to irrationally cautious choices by experimental governments. Encouragingly, a rules-based policy promotes a much more stable market outcome, thereby substantially reducing the risk of severe food shortages. These results underscore the importance of predictable and transparent rules for the state's involvement in agricultural markets.Publication Zambia - The Relevance of a Rules-Based Maize Marketing Policy : An Experimental Case Study of Zambia(Washington, DC, 2007-12-18)A critical barrier to achieving food security and rural income growth in the mixed food marketing systems characterizing many Eastern and Southern African countries revolves around the way that governments and the private sector interact. In shortage years, governments may question the capacity of the private sector to import maize, and thus arrange imports on their own to cover the shortfall. At the same time, traders' import decisions depend on their expectations regarding governments' response to food shortages. Social dilemmas can arise if traders are uncertain about future government behavior or lack trust in official announcements. This paper argues that well-functioning markets depend on transparent and predictable government behavior underpinned by mutual trust and cooperation. The authors report on an economic policy experiment based on a stylized model of the Zambian maize market. The experiment facilitates a comparison between the current government policy of discretionary interventionism and a rules-based policy in which the government precommits itself to a future course of action. A simple precommitment rule can overcome the social dilemma by reducing the risk of food crises and provide appropriate incentives for private traders' participation in the market, thereby enhancing economic efficiency. Exploring mechanisms that can support more predictable and rules-based policy responses to food shortages may therefore be beneficial to the Government of Zambia and to other governments in the region.Publication Sources of Mistrust: An Experimental Case Study of a Central Asian Water Conflict(2010)With the disintegration of the USSR a conflict arose between Kyrgyzstan, Uzbekistan and Kazakhstan over the transboundary Syr Darya river. Upstream Kyrgyzstan controls the Toktogul reservoir which generates hydropower demanded mainly in winter for heating. Downstream Uzbekistan and Kazakhstan need irrigation water in summer, primarily to grow an export crop (cotton). Regional agreements obliging Kyrgyzstan to higher summer discharges in exchange for fossil fuel transfers from downstream riparians in winter have been unsuccessful, due to lack of trust between the parties. Striving for self-sufficiency in irrigation water, Uzbekistan initiated new reservoir construction. This paper examines their economic impact. We report a laboratory experiment modelling the Syr Darya scenario as a multi-round, three-player trust game with non-binding contracts. Payoff schemes are estimated using real-life data. While basinwide efficiency maximisation requires regional cooperation, our results demonstrate that cooperation in the laboratory is hard to achieve. Uzbek reservoirs improve cooperation only weakly and their positive impact is limited to low-water years.Publication Impacts of Land Certification on Tenure Security: Investment, and Land Market Participation : Evidence from Ethiopia(2011)While early attempts at land titling in Africa were often unsuccessful, factors such as new legislation, low-cost methods, and increasing demand for land have generated renewed interest. A four-period panel allows use of a pipeline and difference-indifferences approach to assess impacts of land registration in Ethiopia. We find that the program increased tenure security, land-related investment, and rental market participation and yielded benefits significantly above the cost of implementation.Publication Legal Knowledge and Economic Development: The Case of Land Rights in Uganda(2008)Although many African countries have recently embarked on revisions of their land legislations to give recognition to customary arrangements and strengthen women's rights, few studies assess the actual or potential economic impact of such steps. We use data from Uganda to assess the impact of tenure regime, perceived transfer rights, and legal knowledge on investment, productivity, and land values. While results support strong and positive investment-impacts of tenure and transferability, knowledge of the new law's provisions adds considerably to these, pointing towards substantial potential from disseminating the law that has not yet been fully realized.
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