Publication: A Poverty Analysis Macroeconomic Simulator (PAMS) Linking Household Surveys with Macro-Models
Loading...
Published
2002-09
ISSN
Date
2014-08-08
Author(s)
Editor(s)
Abstract
The Poverty Analysis Macroeconomic Simulator (PAMS) is a model that links standard household surveys with macro frameworks. It allows users to assess the effect of macroeconomic policies-in particular, those associated with Poverty Reduction Strategies papers-on sectoral employment and income, the incidence of poverty, and income distribution. PAMS (in Excel) has three interconnected components: (1) A standard aggregate macro-framework that can be taken from any macro-consistency model (for example, RMSM-X, 123) to project GDP, national accounts, the national budget, the BoP, price levels, and so on, in aggregate consistent accounts. (2) A labor market model breaking down labor categories by skill level and economic sectors whose production total is consistent with that of the macro framework. Individuals from the household surveys are grouped in representative groups of households defined by the labor category of the head of the household. For each labor category, labor demand depends on sectoral output and real wages. Wage income levels by economic sector and labor category can thus be determined. In addition, different income tax rates and different levels of budgetary transfers across labor categories can be added to wage income. (3) A model that uses the labor model results for each labor category to simulate the income growth for each individual inside its own group, assumed to be the average of its group. After projecting individual incomes, PAMS calculates the incidence of poverty and the inter-group inequality. PAMS can produce historical or counterfactual simulations of: + Alternative growth scenarios with different assumptions for inflation, fiscal, and current account balances. These simulations allow test tradeoffs within a macro stabilization program. + Different combinations of sectoral growth (agricultural or industrial, tradable or non-tradable goods sectors), within a given aggregate GDP growth rate. + Tax and budgetary transfer policies. For example, PAMS will simulate a baseline macro-scenario for Burkina Faso corresponding to an existing IMF/World Bank-supported program and introduce changes in tax, fiscal, and sectoral growth policies to reduce poverty and inequality more effectively than the base scenario. So, the authors argue that there are several possible "equilibria" in terms of poverty and inequality within the same macro framework.
Link to Data Set
Citation
“Pereira da Silva, Luiz A.; Essama-Nssah, B.; Samake, Issouf. 2002. A Poverty Analysis Macroeconomic Simulator (PAMS) Linking Household Surveys with Macro-Models. Policy Research Working Paper;No. 2888. © http://hdl.handle.net/10986/19273 License: CC BY 3.0 IGO.”
Digital Object Identifier
Associated URLs
Associated content
Other publications in this report series
Publication The Macroeconomic Implications of Climate Change Impacts and Adaptation Options(Washington, DC: World Bank, 2025-05-29)Estimating the macroeconomic implications of climate change impacts and adaptation options is a topic of intense research. This paper presents a framework in the World Bank's macrostructural model to assess climate-related damages. This approach has been used in many Country Climate and Development Reports, a World Bank diagnostic that identifies priorities to ensure continued development in spite of climate change and climate policy objectives. The methodology captures a set of impact channels through which climate change affects the economy by (1) connecting a set of biophysical models to the macroeconomic model and (2) exploring a set of development and climate scenarios. The paper summarizes the results for five countries, highlighting the sources and magnitudes of their vulnerability --- with estimated gross domestic product losses in 2050 exceeding 10 percent of gross domestic product in some countries and scenarios, although only a small set of impact channels is included. The paper also presents estimates of the macroeconomic gains from sector-level adaptation interventions, considering their upfront costs and avoided climate impacts and finding significant net gross domestic product gains from adaptation opportunities identified in the Country Climate and Development Reports. Finally, the paper discusses the limits of current modeling approaches, and their complementarity with empirical approaches based on historical data series. The integrated modeling approach proposed in this paper can inform policymakers as they make proactive decisions on climate change adaptation and resilience.Publication South Africa’s Fragmented Cities: The Unequal Burden of Labor Market Frictions(Washington, DC: World Bank, 2026-01-08)Using high-resolution administrative, census, and satellite data, this paper shows that South African cities are characterized by spatial mismatches between where people live and where jobs are located, relative to 20 global peers. Areas within 5 kilometers of commercial centers have 9,300 fewer residents per square kilometer than expected, which is 60 percent below the global median. Poor, dense neighborhoods are most affected. In Johannesburg, a 10-percentile increase in distance from the nearest business hub corresponds to a 3.7-percentile drop in asset wealth (a proxy of household wellbeing) and 4.9-percentile drop in employment. In Cape Town, the declines are 4.0 and 3.7 percentiles, respectively. Employment is 87 percent lower in the poorest decile than the richest in Johannesburg and 61 percent lower in Cape Town. These findings suggest that South Africa’s spatial organization of people and economic activity constrains agglomeration and reinforces inequality. This methodology provides a scalable and standardized data-driven framework to analyze spatial accessibility and agglomeration frictions in complex, data-constrained urban systems.Publication The Evolution of Local Participatory Democracy in Nepal(Washington, DC: World Bank, 2025-11-05)Nepal is, according to its constitution, among the world’s most decentralized countries, with a long and complex tradition of local-level public participation. This paper traces the evolution of Nepal’s modern participatory institutions, examining the extent to which they are “induced” by external interventions versus being “organically” rooted in indigenous practices. The paper identifies three broad phases: an initial focus on participation in project implementation; a subsequent phase that expanded citizen engagement; and a third phase of citizen empowerment, culminating in the 2015 federal constitution, which granted unprecedented local autonomy. The analysis yields five key findings. First, over the past 50 years, successive reforms have progressively expanded opportunities for citizens to influence local decision-making. Second, these reforms have integrated traditional participatory mechanisms into formal institutions of local government. Third, although central-level initiatives exist, most participatory platforms continue to operate at the local level. Fourth, the federal constitution has created a new landscape of local democracy, embedding autonomy and accountability. Fifth, although they are still valued in many ethnic and territorial communities, traditional participatory practices are gradually disappearing. The paper concludes by offering policy recommendations to help donor agencies and governments strengthen Nepal’s democratic trajectory. It argues that effective interventions should build on Nepal’s deep participatory traditions while recognizing the constitutional reality of far-reaching local autonomy.Publication Institutional Capacity for Policy Implementation: An Analytical Framework(Washington, DC: World Bank, 2026-01-07)State capacity is an important prerequisite for policy implementation, yet at the country level it is difficult to measure, assess, and reform. This paper proposes a focus on institutional capacity: the ability of public institutions to implement the specific policy mandates for which they are responsible. Based on a review of existing literature, the paper defines the different dimensions that compose institutional capacity and groups them into two cross-cutting categories: organizational dimensions (personnel, financial resources, information systems, and management practices) and governance dimensions (transparency, independence, and accountability). The paper proposes measures for organizational and governance dimensions using existing data, shows intra-institutional variation of these measures within countries, and discusses how new data could be collected for better measurement of these concepts. Finally, the paper illustrates how the framework can be used to diagnose the sources of common problems related to weak policy implementation.Publication Closing the Gender Gap in Entrepreneurship: Overcoming Challenges in Law and Practice for Female Entrepreneurs(Washington, DC: World Bank, 2026-01-07)Despite significant strides toward gender equality, women around the world continue to encounter systemic obstacles that hinder their entrepreneurial success. This paper systematically reviews the literature on the barriers female entrepreneurs face and the solutions proposed to overcome these challenges. It discusses institutional factors, financial factors, human capital factors, and social and cultural factors. The literature overview is complemented by a series of stylized facts that illustrate how overcoming some of these existing barriers is correlated with improved women’s entrepreneurship and female labor force participation, drawing on the World Bank’s Women, Business and the Law database as well as the World Bank’s Enterprise Surveys. The findings underscore the need for creating an enabling environment where women can thrive as entrepreneurs.
Journal
Journal Volume
Journal Issue
Collections
Related items
Showing items related by metadata.
Publication Uganda - Moving Beyond Recovery, Investment and Behavior Change, For Growth, Volume 2, Overview(Washington, DC, 2007-09)In 2006 most of the people of Uganda, with the notable exception of those in the conflict-blighted Northern Region, enjoy a better quality of life and brighter opportunities in a stable and growing economy. Uganda's economy has bounced back beyond what could be regarded as recovery, with real incomes per person now exceeding the levels reached at Independence in 1962. The report structure is as follows: volume one synthesizes the conclusions from analysis in Volume two. In Chapter 1 of Volume two, emphasis is placed on understanding what drove past growth at macro and sector levels, and in particular, on how Uganda's firms and farms have evolved. Chapter 2 continues the retrospective of past growth in agriculture, the most important sector of the economy. The report provides a comprehensive review of growth trends in agriculture, using several data sources. The chapter provides fresh insights on recent trends in poverty and inequality. Chapter 3 presents growth diagnosis and it identifies short-term actions to remove emerging constraints to present and near-term future growth. Chapter 4 models alternative future growth paths and the impact o f alternative public investments on growth using a SAM-based CGE model. The analysis reveals there is little to be gained from 'robbing Peter to pay Paul' for example fixing infrastructure by reducing education financing. Chapters 6 and 7 return to the short-term priorities to remove binding constraints to growth, and put meat on the actions identified in Chapter 3 as being required in the financial sector (Chapter 6) and in infrastructure (Chapter 7). Finally, Chapter 8 ends by assessing the scope for an externally financed scale up of infrastructure.Publication Linking Representative Household Models with Household Surveys for Poverty Analysis: A Comparison of Alternative Methodologies(World Bank, Washington, D.C., 2004-06)The authors compare three approaches to linking representative-household macro models with micro household income data in terms of their implications for measuring the poverty and distributional effects of policy shocks. These approaches are a simple micro-accounting method, an extension of that method to account for changes in employment structure, and the Beta distribution approach. Even though in the authors simulation exercises the three methods do not lead to fundamentally different results in absolute terms, they show that potential differences in the measurement of distributional and poverty effects of policy shocks can be very large.Publication Zooming In : From Aggregate Volatility to Income Distribution(2009-04-01)In contrast with a growing literature on the drivers of aggregate volatility in developing countries, its consequences in terms of individual incomes have received less attention. This paper looks at the impact of cyclical output fluctuations and extreme output events (crises) on unemployment, poverty, and inequality. The authors find robust evidence that aggregate volatility has a regressive, asymmetric, and non linear impact, as reflected in the strong influence of extreme output drops. The findings show that, in addition to the mitigating role of personal wealth, public expenditure and labor protection exert a similar benign effect. These findings are in line with the income substitutions view of social safety nets, and cast a new light on the value of social programs and labor market regulation in crisis prone developing countries.Publication Ghana - Meeting the Challenge of Accelerated and Shared Growth : Country Economic Memorandum, Volume 3. Background papers(Washington, DC, 2007-11-28)Ghana has done increasingly well in recent years. This report has analyzed these issues in considerable depth, making it a prime reference on Ghana's growth and poverty experience and current policy challenges. The Ghana Country Economic Memorandum (CEM) report presented in these three volumes brings together detailed, relevant analyses of Ghana's growth and the Millennium Development Goals (MDGs), poverty reduction, infrastructure, agriculture, investment climate, export competitiveness, social inclusion and political economy.Publication Beyond Commodities(World Bank, Washington, DC, 2014-12-01)The Latin America and Caribbean (LAC) region has seen a decade of remarkable growth and income convergence. Growth has been a key driver for reducing poverty and boosting shared prosperity. It has been debated how much of this decade of growth has been driven by policy reforms and how much was due to the favorable external conditions. While external factors were supportive and relevant, the effect of domestic policies was just as relevant for explaining LAC's recent growth performance. The emphasis of domestic policy has shifted from stabilization policies to structural policies. In addition, a benchmarking exercise reveals which policy gaps will lead to the highest potential growth-payoffs for each country and helps identify potential trade-offs. The authors analyze growth in LAC using descriptive statistics and growth econometrics. The authors use these results for explaining the pattern of growth in LAC over the last decade, for looking ahead, and to identify potential policy gaps.
Users also downloaded
Showing related downloaded files
Publication Digital Africa(Washington, DC: World Bank, 2023-03-13)All African countries need better and more jobs for their growing populations. "Digital Africa: Technological Transformation for Jobs" shows that broader use of productivity-enhancing, digital technologies by enterprises and households is imperative to generate such jobs, including for lower-skilled people. At the same time, it can support not only countries’ short-term objective of postpandemic economic recovery but also their vision of economic transformation with more inclusive growth. These outcomes are not automatic, however. Mobile internet availability has increased throughout the continent in recent years, but Africa’s uptake gap is the highest in the world. Areas with at least 3G mobile internet service now cover 84 percent of Africa’s population, but only 22 percent uses such services. And the average African business lags in the use of smartphones and computers as well as more sophisticated digital technologies that catalyze further productivity gains. Two issues explain the usage gap: affordability of these new technologies and willingness to use them. For the 40 percent of Africans below the extreme poverty line, mobile data plans alone would cost one-third of their incomes—in addition to the price of access devices, apps, and electricity. Data plans for small- and medium-size businesses are also more expensive than in other regions. Moreover, shortcomings in the quality of internet services—and in the supply of attractive, skills-appropriate apps that promote entrepreneurship and raise earnings—dampen people’s willingness to use them. For those countries already using these technologies, the development payoffs are significant. New empirical studies for this report add to the rapidly growing evidence that mobile internet availability directly raises enterprise productivity, increases jobs, and reduces poverty throughout Africa. To realize these and other benefits more widely, Africa’s countries must implement complementary and mutually reinforcing policies to strengthen both consumers’ ability to pay and willingness to use digital technologies. These interventions must prioritize productive use to generate large numbers of inclusive jobs in a region poised to benefit from a massive, youthful workforce—one projected to become the world’s largest by the end of this century.Publication The Firm-Level Impact of the Covid–19 Pandemic(World Bank, Washington, DC, 2020-09-02)The World Bank commissioned a firm-level survey to provide quantitative evidence of the impact of the Coronavirus (COVID-19) pandemic. Two rounds of data have now been collected for the months of March and May using a nationally representative World Bank survey providing information on the impact of the Coronavirus (COVID-19) pandemic. The survey includes five hundred firms spanning a wide range of industries and firm sizes, as well as the formal and informal sector. This note provides a snapshot of how the firms’ outcomes and response to the pandemic have changed between the months of March and May 2020.Publication MIGA Annual Report 2013 : Insuring Investments, Ensuring Opportunities(Washington, DC: World Bank Group, 2013-10-11)In fiscal year 2013, Multilateral Investment Guarantee Agency (MIGA) issued 2.8 billion dollars in investment guarantees for projects in our developing member countries. At 1.5 billion dollars, representing more than half of new business, the bulk of MIGA's guarantees issued support investments in Sub-Saharan Africa. Sixty-nine percent of new business volume this year was in complex projects in infrastructure and extractive industries, a strategic priority for the Agency. This year, 82 percent of MIGA's new volume fell into one or more of strategic priority areas: investments in the world's poorest countries, "South-South" investments, investments in conflict-affected countries, and investments in complex projects. MIGA also established the conflict-affected and fragile economies facility to further deepen support to this priority area.Publication The Role of Social Ties in Factor Allocation(Published by Oxford University Press on behalf of the World Bank, 2019-10)We investigate whether social structure helps or hinders factor allocation using unusually rich data from the Gambia. Evidence indicates that land available for cultivation is allocated unequally across households; and that factor transfers are more common between neighbors, co-ethnics, and kinship-related households. Does this lead to the conclusion that land inequality is due to flows of land between households being impeded by social divisions? To answer this question, a novel methodology that approaches exhaustive data on dyadic flows from an aggregate point of view is introduced. Land transfers lead to a more equal distribution of land and to more comparable factor ratios across households in general. But equalizing transfers of land are not more likely within ethnic or kinship groups. In conclusion, ethnic and kinship divisions do not hinder land and labor transfers in a way that contributes to aggregate factor inequality. Labor transfers do not equilibrate factor ratios across households. But it cannot be ruled out that they serve a beneficial role, for example, to deal with unanticipated health shocks.Publication Impact of Migration on Economic and Social Development : A Review of Evidence and Emerging Issues(2011-02-01)This paper provides a review of the literature on the development impact of migration and remittances on origin countries and on destination countries in the South. International migration is an ever-growing phenomenon that has important development implications for both sending and receiving countries. For a sending country, migration and the resulting remittances lead to increased incomes and poverty reduction, and improved health and educational outcomes, and promote economic development. Yet these gains might come at substantial social costs to the migrants and their families. Since many developing countries are also large recipients of international migrants, they face challenges of integration of immigrants, job competition between migrant and native workers, and fiscal costs associated with provision of social services to the migrants. This paper also summarizes incipient discussions on the impacts of migration on climate change, democratic values, demographics, national identity, and security. In conclusion, the paper highlights a few policy recommendations calling for better integration of migration in development policies in the South and the North, improving data collection on migration and remittance flows, leveraging remittances for improving access to finance of recipient households and countries, improving recruitment mechanisms, and facilitating international labor mobility through safe and legal channels.