Download or read book The Logic of Adaptive Sequential Experimentation in Policy Design written by Haipeng Xing and published by Intl Food Policy Res Inst. This book was released on 2013-06-26 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inspired by the wide adoption of rigorous randomized controlled trials (RCTs) in medical research, economists and other social scientists have increasingly used RCTs in their research. As researchers pick up projects amenable to the RCT methodology, they likely leave out important questions to which RCTs cannot be directly applied. As a result, RCTs have been criticized for the proclivity of addressing trivial questions. As a matter of fact, in medical research RCTs are an integral part of adaptive sequential experiment design—a few steps must be taken to screen out drugs that have toxins and strong side effects before running any RCTs on humans. In this paper, we argue that economists can learn a great deal from the design principles implemented in medical research. We develop a theoretical model to show the logic of adaptive sequential experiment design in the presence of uncertainty over negative effects and discuss how to choose samples in a population to minimize the experiment cost. We also point out the applications of our proposed framework in the economic domain, such as economic reforms and new product design.

Download or read book The Impact of Alternative Input Subsidy Exit Strategies on Malawi s Maize Commodity Market written by Mariam A. T. J. Mapila and published by Intl Food Policy Res Inst. This book was released on 2013-07-16 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study has been conducted in order to generate evidence of the visibility of exit from farm input subsidies in an African context. The study simulates the impact of alternative exit strategies from Malawi’s farm input subsidy program on maize markets. The simulation is conducted using a multiequation partial equilibrium model of the national maize market, which is sequentially linked via a price-linkage equation to local rural maize markets. The model accounts for market imperfections prevailing in the country that arise from government price interventions. Findings show that some alternative exit strategies have negative and sustained impacts on maize yields, production, and acreage allocated to maize over the simulation period. Market prices rise steadily as a result of the implementation of different exit strategies. Despite higher maize prices, domestic maize consumption remains fairly stable, with a slow but increasing trend over the simulation period. Results further suggest that exit strategies that are coupled with improvements in agricultural extension services have the potential to offset the negative impacts of the removal or scaling down of agricultural input subsidies. The study findings demonstrate the difficulty of feasibly removing farm input subsidies. Study recommendations are therefore relevant for policymakers and development partners debating removal or implementation of farm input subsidies.

Download or read book Welfare and Poverty Impacts of India s National Rural Employment Guarantee Scheme written by Klaus Deininger and published by Intl Food Policy Res Inst. This book was released on 2013-09-13 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: India’s National Rural Employment Guarantee Scheme (NREGS) is one of the largest public works programs globally. Understanding the impacts of NREGS and the pathway through which its impacts are realized thus has important policy implications. We use a three-round 4,000-household panel from Andhra Pradesh together with administrative data to explore short- and medium-term poverty and welfare effects of NREGS. Triple difference estimates suggest that participants significantly increase consumption (protein and energy intake) in the short run and accumulate more nonfinancial assets in the medium term. Direct benefits exceed program-related transfers and are most pronounced for scheduled castes and tribes and households supplying casual labor. Asset creation via program-induced land improvements is consistent with a medium-term increase in assets by nonparticipants and increases in wage income in excess of program cost.

Download or read book Women s Empowerment and Nutrition written by Mara van den Bold and published by Intl Food Policy Res Inst. This book was released on 2013-11-01 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many development programs that aim to alleviate poverty and improve investments in human capital consider women’s empowerment a key pathway by which to achieve impact and often target women as their main beneficiaries. Despite this, women’s empowerment dimensions are often not rigorously measured and are at times merely assumed. This paper starts by reflecting on the concept and measurement of women’s empowerment and then reviews some of the structural interventions that aim to influence underlying gender norms in society and eradicate gender discrimination. It then proceeds to review the evidence of the impact of three types of interventions—cash transfer programs, agricultural interventions, and microfinance programs—on women’s empowerment, nutrition, or both. Qualitative evidence on conditional cash transfer (CCT) programs generally points to positive impacts on women’s empowerment, although quantitative research findings are more heterogenous. CCT programs produce mixed results on long-term nutritional status, and very limited evidence exists of their impacts on micronutrient status. The little evidence available on unconditional cash transters (UCT) indicates mixed impacts on women’s empowerment and positive impacts on nutrition; however, recent reviews comparing CCT and UCT programs have found little difference in terms of their effects on stunting and they have found that conditionality is less important than other factors, such as access to healthcare and child age and sex. Evidence of cash transfer program impacts depending on the gender of the transfer recipient or on the conditionality is also mixed, although CCTs with non-health conditionalities seem to have negative impacts on nutritional status. The impacts of programs based on the gender of the transfer recipient show mixed results, but almost no experimental evidence exists of testing gender-differentiated impacts of a single program. Agricultural interventions—specifically home gardening and dairy projects—show mixed impacts on women’s empowerment measures such as time, workload, and control over income; but they demonstrate very little impact on nutrition. Implementation modalities are shown to determine differential impacts in terms of empowerment and nutrition outcomes. With regard to the impact of microfinance on women’s empowerment, evidence is also mixed, although more recent reviews do not find any impact on women’s empowerment. The impact of microfinance on nutritional status is mixed, with no evidence of impact on micronutrient status. Across all three types of programs (cash transfer programs, agricultural interventions, and microfinance programs), very little evidence exists on pathways of impact, and evidence is often biased toward a particular region. The paper ends with a discussion of the findings and remaining evidence gaps and an outline of recommendations for research.

Download or read book The Logic of Adaptive Behavior written by Martijn van Otterlo and published by IOS Press. This book was released on 2009 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Markov decision processes have become the de facto standard in modeling and solving sequential decision making problems under uncertainty. This book studies lifting Markov decision processes, reinforcement learning and dynamic programming to the first-order (or, relational) setting.

Download or read book The Oxford Handbook of Structural Transformation written by Célestin Monga and published by Oxford University Press, USA. This book was released on 2019-02-14 with total page 741 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Oxford Handbook of Structural Transformation addresses the economics of structural transformation around the world. It deals with major themes, which include history and context, critical issues and concepts, methodological foundations, main theoretical approaches, policy issues, some illuminating country experiences of structural transformation, and important debates on the respective roles of the market and the state in that process. The historical record provides a challenge for economists to understand the success of the rising economic powers (some of them initially considered unlikely candidates for prosperity) and the stagnation or decline of others. Five major questions emerge: DT Why has so much divergence occurred among nations of the world since the Industrial Revolution, and particularly during the 20th century? DT Why has the pattern changed recently with the emergence of a few developing economies (e.g. the multi-polar world), and can it be sustained? DT What are the key drivers, strategies, and policies, to foster structural transformation in various different country contexts and in a constantly evolving global economy? DT How could low- and middle-income countries avoid development traps and learn from past experiences whilst exploiting the new opportunities offered by the Fourth Industrial Revolution? DT What is the role of various development stakeholders and other important players in facilitating sustained economic convergence among nations? This book addresses these questions, bringing the rigor, usefulness, and multi-disciplinary scope of the Oxford Handbook series to a critical topic in economics. The Oxford Handbook of Structural Transformation is an essential reference work and a stimulus to new research and creativity across all branches of the social sciences.

Download or read book Adaptivity and Efficiency in the Design of Sequential Experiments written by Ahmadreza Momenisedei and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sequential experiments that take place in many practical settings are often characterized by an exploration-exploitation tradeoff that is captured by the multi-armed bandit framework. This framework has been studied extensively in the literature and applied in various application domains including revenue management, service operations, online retail, recommender systems, and healthcare. We study fundamental problems where there are uncertainties about key characteristics governing the sequential experimentation environment, such as the information acquisition process, the payoff structure, and the feedback structure. Furthermore, we design and analyze near-optimal dynamic optimization policies that are adaptive with respect to these characteristics.

Download or read book Assessment of the Capacity Incentives and Performance of Agricultural Extension Agents in Western Democratic Republic of Congo written by Catherine Ragasa and published by Intl Food Policy Res Inst. This book was released on 2013-08-19 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural extension is critical for agricultural growth and food security, but making the extension system effective, demand driven, and responsive to the needs of a diverse set of producers remains a challenge. As part of the institutional reforms in the Democratic Republic of Congo (DRC), the extension system is being reviewed to identify strategies and practical actions to transform the system to better respond to the knowledge needs in a rapidly changing agriculture and food sector. This paper provides an in-depth review of the agricultural extension system of DRC including an analysis of its policies and legal framework, organization, and management; links to critical institutions; and capacity and incentive of different actors in the system. This review involved document analyses, interviews with key informants, and surveys of 107 extension organizations and 162 extension agents in 156 randomly selected villages in western DRC. This review suggests serious funding constraints, human resource management problems, no linkage and coordination within the extension system and with research and education systems, and a majority of underserved communities and farmers. This review also highlights a good opportunity given the huge human resources (more than 11,000 agents) deployed into the sectors and territories as part of the Ministry’s agricultural inspection system. However, their mandate is not clear and they currently focus on data collection (census) and checking what farmers do and limited in extension and advisory work. This review highlights the urgent need for human resource or civil service reform; public-sector commitment and funding; infrastructure rebuilding and skills upgrading in extension, education and training, and research organizations; and a unified policy or strategy with clear vision, mandate, targets, and performance-based incentive system.

Download or read book The Formation of Job Referral Networks written by Antonio Stefano Caria and published by Intl Food Policy Res Inst. This book was released on 2013-09-05 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Targeting Technology to Reduce Poverty and Conserve Resources written by Travis J. Lybbert and published by Intl Food Policy Res Inst. This book was released on 2013-07-02 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demand heterogeneity often makes it profitable for firms to price and promote goods and services differently in different market segments. When private consumption brings public benefits, this same heterogeneity can be used to target public subsidies. We explore the design of public–private targeting and segmentation strategies in the case of a resource-conserving agricultural technology in India. To understand farmers’ heterogeneous demand for laser land leveling (LLL), we conducted an experimental auction for LLL services with an integrated randomized controlled trial to estimate the private benefits of the technology. We use graphical and econometric approaches to characterize farmer demand for LLL. We then add detailed cost data from LLL providers to simulate and evaluate several potential targeted delivery strategies based on measures of (1) the cost-effectiveness of expanding LLL dissemination, (2) water savings, and (3) market surplus in a welfare framework. These simulations demonstrate inherent tradeoffs between increasing the amount of land that is leveled and expanding the number of farmers who adopt the technology, and between adoption and water savings. While segmenting and targeting are popular elements of many public–private partnerships to develop and disseminate agricultural technologies, formulating and implementing effective delivery strategies requires a rich understanding of costs, benefits, and demand. Our experimental approach generates such an understanding and may be relevant in other contexts.

Download or read book An Ex Ante Analysis of the Impact and Cost Effectiveness of Biofortified High Provitamin A and High Iron Banana in Uganda written by John L. Fiedler and published by Intl Food Policy Res Inst. This book was released on 2013-07-16 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uganda has made notable progress in reducing micronutrient deficiencies in recent years, but the prevalence of vitamin A deficiency (VAD) and anemia among children under 5 remain unacceptably high. According to World Health Organization criteria, VAD remains a public health problem in Uganda, and anemia is a severe problem. In this paper we explore the potential contribution to reducing both of these deficiencies using a genetically modified, high–provitamin A and high-iron banana (HPVAHIB) that is currently being developed. We present an ex ante analysis of the costs and nutritional benefits of HPVAHIB. Using the Ugandan National Household Survey of 2005/06, we analyzed the production and consumption patterns of highland cooking banana (nakinyika) and sweet banana (sukalindizi). Informed by the empirical findings, we developed geographically differentiated adoption, production, consumption, and diffusion patterns for several types of HPVAHIB. Based on households’ reported quantities of each type of banana currently consumed, we estimated the number of people consuming each banana and the quantities they consume, and then simulated the additional intakes of vitamin A and iron and estimated the number of disability-adjusted life years (DALYs) saved attributable to each. Combining the health impacts with the estimated costs of the project, three impact measures of the HPVAHIB are developed: the cost per DALY saved, the benefit–cost ratio, and the internal rate of return. Eighteen scenarios are estimated. The base scenario, which includes only the biofortification of cooking banana with provitamin A at a level equal to 400 percent its intrinsic provitamin A content, estimates that the net present cost per DALY saved of HPVAHIB is US$62, its benefit–cost ratio is 16, and its internal rate of return is 31 percent. According to criteria established by the World Health Organization and the World Bank, the HPVAHIB project is a “very cost-effective” health intervention.

Download or read book Agriculture and Adaptation in Bangladesh written by Timothy S. Thomas and published by Intl Food Policy Res Inst. This book was released on 2013-07-29 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bangladesh is extremely vulnerable to the impact of climate change because it is a low-lying, flat country subject to both riverine flooding and sea level rise, and because a large portion of its population is dependent on agriculture for its livelihood. The goal of this research was to examine the likely impacts of climate change on agriculture in Bangladesh, and develop recommendations to policymakers to help farmers adapt to the changes. In this study, we use climate data from four general circulation models (GCMs) to evaluate the impact of climate change on agriculture in Bangladesh by 2050. We use the DSSAT (Decision Support System for Agrotechnology Transfer) crop modeling software to evaluate crop yields, first for the 1950 to 2000 period (actual climate) and then for the climates given by the four GCMs for 2050. We evaluate crop yields at 1,789 different points in Bangladesh, using a grid composed of roughly 10 kilometer (km) squares, for 8 different crops in 2000 and 2050. For each crop, we search for the best cultivar (variety) at each square, rather than limiting our analysis to a single variety for all locations. We also search for the best planting month in each square. In addition, we explore potential gains in changing fertilizer levels and in using irrigation to compensate for rainfall changes. This analysis indicates that when practiced together, using cultivars better suited for climate change and adjusting planting dates can lessen the impacts of climate change on yields, especially for rice, and in some cases actually result in higher yields. In addition, the analysis shows that losses in yield due to climate change can be compensated for, for many crops, by increasing the availability of nitrogen in the soil. Moreover, we used a household survey to collect information on the incidence of climatic shocks in the last five years and adaptation options. The survey was conducted from December 2010 to February 2011, covering data from the previous production year. The results confirm that Bangladesh farmers already perceive the impacts of climate change. In particular, the survey results indicate that of all climate change–related shocks, floods, waterlogging, and river erosion caused the largest loss to rice production. Farmers in our survey lost around 12 percent of their harvest, on average, to some kind of shock, with about half of that attributable to flooding-related issues. The second leading cause of rice crop loss was pests, responsible for around 3 percent of production. Taken together, the results indicate that adaptation efforts in Bangladesh should include adjusting planting dates, using improved cultivars better suited for climate change, improving fertilizer application, exploring increased maize production, and bolstering flood and pest protection for farmers.

Download or read book Organizational and Institutional Issues in Climate Change Adaptation and Risk Management written by Catherine Ragasa and published by Intl Food Policy Res Inst. This book was released on 2013-07-17 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change places demand on existing governance structures to reform and work more effectively than in the past. In response, greater attention to and funding for climate change adaptation—including the efforts of National Adaptation Programmes of Action (NAPAs), the Least Developed Country Fund, the Special Climate Change Fund, the Adaptation Fund, and the E.U. Global Climate Change Alliance—provide an opportunity for institutional, organizational, and human-capacity strengthening. This study was conducted to explore the challenges and opportunities for building human, organizational, and institutional capacity for more effective climate change adaptation in developing countries. It is part of a larger research project titled “Enhancing Women’s Assets to Manage Risk under Climate Change: Potential for Group-Based Approaches,” which is being conducted to help organizations better understand ways in which development projects can assist rural households in adapting to and managing the effects of climate change. This report provides some reflections and insights on the level of awareness, practices, and organizational and institutional issues being faced by countries as they adapt to climate change, based on interviews with 87 practitioners working in government agencies, local organizations, international organizations, and think thanks reporting involvement in climate change adaptation. Data were collected in Bangladesh, Ethiopia, Kenya, and Mali using both an e-survey platform and face-to-face interviews. Responses reveal active work within these organizations on climate change adaptation and emphasize their important role in the countries’ efforts to address and adapt to climate change. Responses also reveal strong awareness among these organizations of different aspects of climate change adaptation along the different stages in a climate change adaptation project cycle, which may be a reflection of the active discussions and awareness campaigns during NAPA development in these countries. However, despite the awareness and presence of national strategies and action plans, there seem to be no explicit and clearly defined policy and strategy within these organizations outlining their role in and contribution to the national and collective efforts and, more importantly, no explicit and measurable targets and monitoring and evaluation (M&E) system to track progress and outcomes over time. Reported capacity gaps can be grouped into two categories: training needs and institutional challenges. In many organizations, there is limited awareness of and emphasis on the need for participation of target groups and beneficiaries during design and planning of climate change adaptation projects. In addition, many respondents reported a need for greater attention to issues related to profitability, financial sustainability, and market access from climate change project design to M&E. Finally, respondents emphasized that climate change projects should pay greater attention to gender, social, political, and cultural issues in their design and implementation. Reflections of respondents also highlighted the need for organizational capacity strengthening for those local organizations working in and providing services to rural communities, and for promoting a culture of impact and M&E within these organizations, in addition to the reported training needs in climate change management and in gender and social analysis. While this report provides some insights, further empirical analyses are needed to discover more details on strategies that could help trigger mind-set and organizational culture change and to capture the complexity of organizational and institutional issues hindering climate change adaptation efforts that aim at reducing vulnerability and contributing to development outcomes.

Download or read book The Oxford Companion to the Economics of China written by Shenggen Fan and published by OUP Oxford. This book was released on 2014-10-30 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: China's rise as an economic powerhouse raises a number of questions that are the subject of lively debate. How did the country do it? How applicable are the lessons of China's economic reform of the past thirty years to the challenges it faces in the next three decades? What does the detailed pattern of China's success and challenges look like at the sub-sectoral and sub-national levels, and what does this mean for future policy? How will China's role as a global economic player evolve? The Oxford Companion to the Economics of China presents an original collection of perspectives on the Chinese economy's past, present, and future: 99 entries written by the leading China analysts of our time. The topics covered include: the China model, future prospects for China , China and the global economy, trade and the Chinese economy, macroeconomics and finance, urbanisation, industry and markets, agriculture and rural development, land, infrastructure, and environment, population and labour, dimensions of wellbeing and inequality, health and education, gender equity, regional divergence in China, and a selection of perspectives on some of China's provinces. The Editors are four global leaders in Chinese economic analysis and policy who between them have held or hold the following positions: Director General, International Food Policy Research Institute; Co-Editor, China Economic Review; President Chinese Economists Society; Assistant Director of Research at the IMF; Principal Adviser to the Chief Economist of the World Bank; and Professors of Economics at Ivy League Universities.

Download or read book Links between Tenure Security and Food Security written by Hosaena Ghebru Hagos and published by Intl Food Policy Res Inst. This book was released on 2013-09-13 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: While numerous studies exist that evaluate the impacts of land reform on household investment behavior, land productivity, and land rental market activities, the literature is thin in terms of showing the direct food securities impacts of land tenure reforms. This study, thus, uses five rounds of household panel data from Tigray, Ethiopia, collected in the period 1998–2010 to assess the impacts of a land registration and certification program that aimed to strengthen tenure security and how it has contributed to increased food availability and thus food security in this food-deficit region. Our first survey took place just a year before the intervention (the land certification program). Our panel data in combination with the “years of certificate ownership” variable allow us to assess the dynamic impacts on food (calorie) availability of strengthened tenure security. Anthropometric data also allow us to assess potential child nutrition impacts of the reform 8–12 years after its implementation. Results show that land certification appears to have contributed to enhanced calorie availability (calorie intake), and more so for female-headed households, either through enhanced land rental market participation or increased investment and productivity on owner-operated land. Results also show that members of households that accessed additional land through the land rental market had a significantly higher body mass index. Though results show that land rental market participation is enhancing production efficiency, high transaction costs in that market suggest there are still unrealized gains from trade. Thus, the recent restrictive regional land law that allows for only short-term rental contracts and does not allow more than 50 percent of land to be rented out may threaten future tenure security and may undermine the benefits from the existing tenure reform.

Download or read book Demand for Weather Hedges in India written by Ruth Vargas Hill and published by Intl Food Policy Res Inst. This book was released on 2013-07-23 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Income risk is substantial for farmers in developing countries. Formal insurance markets for this risk are poorly developed, and as a result there has been an increasing trend to sell weather hedges to smallholder farmers to manage their risk. This paper analyzes the demand for rainfall-based weather hedges among farmers in rural India. We explore the predictions of a standard expected utility theory framework on the nature of demand for such products, in particular testing whether demand behaves as predicted with respect to price, the basis of the hedge, and risk aversion using data from a randomized control trial in which price and basis risk was varied for a series of hedging products offered to farmers. We find that demand behaves as predicted, with demand falling with price and basis risk, and appearing hump-shaped in risk aversion. Second, we analyze understanding of and demand for hedging products over time, examining the impact of increased investments in training on hedging products as well as evidence for learning by doing among farmers. We find evidence that suggests that learning by doing is more effective at increasing both understanding and demand.

Download or read book Building effective clusters and industrial parks written by Zhang, Xiaobo and published by Intl Food Policy Res Inst. This book was released on 2016-12-22 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is a daunting task to build institution and infrastructure over a short time period in developing countries. But in the absence of sound institutions and adequate infrastructure, it is difficult for economic transformation to take place. An alternative is to facilitate existing industrial clusters or build industrial parks by creating an enabling environment in a limited place. This paper reviews the commonly used strategies to build effective clusters and industrial parks. Clusters and industrial parks are location specific. Because they have an informational advantage, local governments are in a better position than the central government to identify and solve the bottlenecks that affect clusters and industrial parks. As clusters and industrial parks evolve, new bottlenecks emerge, thereby requiring new solutions. This in turns calls for continuous tinkering by local governments. It is important to place local governments and business communities in the driver’s seat of local economic growth so that they can watch out for and adjust to the bumps in the road ahead.