environment technology and the social articulation of risk in west african agriculture two preoccupations are not mutually exclusive superficially they share the common concern that liberalization is insufficient to resolve the subsaharan food crisis at a deeper level the two preoccupations are more intimately interrelated via the correspondence that links initial wealth to risk exposure and to behavior in both production and asset accumulation a number of recent empirical studies of risk in low income countries find that households are able to employ their accumulated assets to smooth consumption in the face of adverse agricultural production shocks 3 missing from these studies is explicit attention to the fact that the effective risk from which households insulate consumption is not that of production shocks directly but of those shocks as socially articulated by institutions and property rights this article explores the creation and distribution of effective risk estimating how environment technology and social factors interact to construct it endogenously 4 put differently this article develops the notion that the risk from which households ex post try to insulate consumption is not an immutable natural or technical feature of the landscape as michael watt s contrast between precolonial and colonial nigeria forcefully demonstrates the effective risk presented by an unchanged set of environmental and technical circumstances can

less filling tastes great the realist neoliberal debate this essay examines and reformulates the realist neoliberal debate focusing initially on the issue of the attribution of goals to states we argue that not only are goals merely the epiphenomena of other things but also that their specification constitutes but a re description of strategic environments that is although an attribution of goals may contribute to our characterization of outcomes a discussion of them is not central to the development of a theory that explains and predicts the outbreak of conflict and the patterns of cooperation instead we argue that the realist neoliberal debate should be recast so that our central research agenda is the development of substantively specific models that allow us to ascertain how the equilibrium to a game in which states structure international affairs influences the types of issue specific subgames states play how countries coordinate to equilibria of different types how we can characterize the coordination problems associated with different equilibria how states can enhance the attractiveness of an equilibrium and how states can signal commitments to the strategies that are part of that equilibrium

migration remittances and the family remittances by migrants along with migration itself are elements in a migrant familys intertemporal contractual arrangement the reasons why the migrant and his family voluntarily enter into a mutually beneficial contractual arrangement with each other rather than with a 3rd party are discussed and the conditions under which the contractual arrangement is self enforcing are identified both parties can usually benefit from a number of pareto efficient mutual contractual arrangements this gives rise to an indeterminacy problem solved through a bargaining process between the parties who consequently converge to a contractual arrangement implying a specific flow of migrant to family remittances the chosen contractual arrangement reflects the relative bargaining powers of the parties and variables impinging upon these powers thus bear upon remittances in the light of these arguments tests are conducted on observed remittance behavior across individual migrants in botswana authors

regional growth linkages from agriculture pioneering research on downstream linkages from agriculture is said to demonstrate that consumption links rather than production links are the main source of indrect growth effects that these consumption links take the form of labour intensive goods and services produced locally and that the largest farm enterprises are most locally multiplicative of activities mopping up surplus rural labour this article has two purposes first the methodologies assumptions and data base for the quantification of the local and non local regional multiplier effects from agricultural development are examined second the contradictory interpretations for agricultural policy which have arisen from these exercises of quantification are discussed and an attempt made to explain their bases

hearts and spades paradigms of household economics abstract this paper explains why the feminist critique of inequalities within the family poses a serious challenge to conventional economic theories of the household but it also discusses those aspects of both neoclassical and marxian theory that are useful to an analysis of conflict within the family arguing that the bargaining power models being developed by some neoclassical theorist are complementary to marxist influenced structural accounts

modeling agricultural growth multipliers agriculture s potential as an engine of third world growth depends in large part on the size of the production and consumption linkages it stimulates in rural regions current estimates of agricultural growth multipliers within rural regions vary widely not only because economic structures differ across regions but also because the array of fixed price models most commonly used embody widely differing basic assumptions among fixed price models the semi input output formulation projects the most plausible multipliers but even they overstate the magnitude of growth multipliers by 10 to 25 according to the price endogenous model developed here

credit as insurance in agrarian economies abstract this paper examines consumption credit as an insurance mechanism in agrarian economies it explains the more rapid adoption of new technology in the green revolution by large farmers who had greater access to consumption credit the paper also demonstrates how the emergence and expansion of consumption credit markets by mitigating the need for hoarding in order to meet consumption contingencies enhances growth by encouraging investment

entrenching the yoshida defense doctrine three techniques for institutionalization japan s level of defense expenditure relative to tbe size of its economy bas long been uniquely low among the major industrialized countries as of 1995 japan s expenditures stood at 0 96 percent of gross domestic product gdp even adding to this tbe approximately 0 3 percent of gdp devoted to pensions for retired personnel the level of spending is considerably less than that of major westem states such as tbe united states united kingdom france and germany as well as industrialized asian states such as south korea taiwan malaysia and singapore furthermore these relative magnitudes have remained reasonably stable over tbe past few decades see table 1 defense expenditure as a percentage of gdp or gnp gross national product often referred to simply as defense burden has over tbe past few decades become the standard benchmark for measuring a state s relative contribution to international security because of this tbe appropriateness and consequences of japan s relatively low expenditure of national wealth on defense bave been hotly debated botb in japan and abroad critics accuse japan of unfairly exploiting a defense free ride to build its economic success and others worry that japan s lack of military capabilities prevents it from becoming a normal state whose political role is commensurate

tomatoes land and hearsay property and history in asante in the time of structural adjustment abstract after a decade of advocating market based solutions to poverty and underdevelopment in sub saharan africa policy analysts have begun to reexamine the actual and potential role of african states and institutions in promoting sustainable development while stressing the importance of flexibility in policies and institutions much of this debate rests on ahistorical approaches to understanding african institutions which portray them as inflexible and fragile beleaguered by economic and political change rather than contributing to it after reviewing some of the assumptions which inform recent debates this essay argues for a more processual approach which takes account of the negotiability and ambiguity of many institutional arrangements drawing on a case study of recent changes in land rights and agricultural practices in a rural community in ghana

haddad lawrence john hoddinott and harold alderman eds intrahousehold resource allocation in developing countries models methods and policy baltimore md johns hopkins university press 1997 384 pp 55 00 in this volume economists demographers sociologists and anthropologists collaborate in the study of how resources are allocated within households in developing countries and why it matters from a policy perspective surveying a broad range of theory and evidence the contributors examine the many social and cultural factors that influence decisions about the family and household level about the allocation of time income assets and other resources ths contributors show that a more complete understanding of intrahousehold behaviour can increase the likelihood that policies will reach the people they are intended to affect

the measurement of inequality and poverty a policy maker s guide to the literature abstract mathematical measures of poverty and inequality embody values that reflect the historical political social intellectual and ethical forces prevalent at the time of their formulation so that policy makers may select measures of poverty and inequality that are consistent with their values it is important to make explicit the value judgements implicit in the measures models designed to measure poverty and inequality fall into four categories absolute poverty measures absolute income measures relative poverty measures and relative inequality measures this article examines the principal models within each category and discusses the assumptions limitations and values implicit in the models

financial regulatory reform after the crisis an assessment this is a survey of progress with the postcrisis global g20 reform of the financial system in five key areas of new regulation 1 making financial institutions more resilient 2 ending too big to fail 3 making derivatives markets safer 4 transforming shadow banking and 5 improving trade competition and market transparency the resiliency reforms particularly bank capital regulations have been increasingly successful in improving financial stability but have been accompanied by some reduction in secondary market liquidity i review specific areas where reforms are far from complete or have even been counterproductive this paper was accepted by gustavo manso finance conflict of interest statement the author s webpage at http www stanford edu duffie provides related research and disclosure of potential conflicts of interest

the impact of collateralization on swap rates interest rate swap pricing theory traditionally views swaps as a portfolio of forward contracts with net swap payments discounted at libor rates in practice the use of marking to market and collateralization questions this view as they introduce intermediate cash flows and alter credit characteristics we provide a swap valuation theory under marking to market and costly collateral and examine the theory s empirical implications we find evidence consistent with costly collateral using two different approaches the first uses single factor models and eurodollar futures prices and the second uses a formal term structure model and treasury swap data the traditional approach to interest rate swap valuation sundaresan 1991a and duffie and singleton 1997 treats a swap as a portfolio of forward contracts on the underlying floating interest rate under specific assumptions regarding the nature of default and the credit risk of the counterparties duffie and singleton 1997 prove that swap rates are par bond rates of an issuer who remains at libor quality throughout the life of the contract this result is extremely useful for extracting zero coupon bond prices pricing swap derivatives and testing spot rate models despite the popularity of the traditional view market practice brings into question some of the underlying assumptions of this approach as the swap market rapidly grew in the late 1980s and early 1990s an increasingly diverse group of counterparties entered the market to mitigate their exposure to counterparty credit risk market participants began using a number of credit enhancements to improve the credit quality of swap contracts without question the most important credit enhancement is the posting of collateral in the amount of the current mark to market value of the swap contract isda 1999 due to these credit enhancements market participants commonly view interest rate swaps as free of counterparty default risk see e g tuckman 2002 this implies that in contrast to the traditional approach swap rates should be discounted not at default risky libor rates but rather at default free rates johannes and sundaresan are with the columbia business school we thank seminar partici

identifying the poor in developing countries do different definitions matter abstract this paper compares several commonly used definitions of poverty household survey data from cote d ivoire are examined to see whether different definitions choose the same people as poor we find that they often do not choose the same people even though we a priori set all the definitions so that 30 of the population is classified as poor this implies that different definitions of poverty may lead to different policy recommendations which suggests that more attention should be given to the choice of a particular definition of poverty when analyzing the effects of economic policies on the poor

negative swap spreads and limited arbitrage since october 2008 fixed rates for interest rate swaps with a thirty year maturity have been mostly below treasury rates with the same maturity under standard assumptions this implies the existence of arbitrage opportunities this paper presents a model for pricing interest rate swaps where frictions for holding bonds limit arbitrage i show analytically that negative swap spreads should not be surprising in the calibrated model swap spreads can reasonably match empirical counterparts without the need for large demand imbalances in the swap market empirical evidence is consistent with the relation between term spreads and swap spreads in the model

motivations to remit evidence from botswana in this article a theory of motivations to send remittances is described and tested with data from botswana altruism is one of the motivations tested and found to be an insufficient explanation for remittances among migrants in botswana a refinement of the model stipulates a modified altruism or enlightened self interest in this model the relationship between the migrant and family is tempered by an implicit understanding of mutual benefit the household strategy may be to encourage some members to migrate as a means of spreading risk and sharing gains the household strategy is similar to an insurance policy where migration is to places where market potential is high the risks incurred might be high the example is given of migration during a drought in botswana migrant remittances were greater in households with more cattle or households with more to lose drought alone was not statistically related to remittances increases in remittances were related to increased levels of education it is suggested that repayment was the motive for parents investment in migrants education migrants gains are identified as the potential for an inheritance the security of channeling investments through a trusted family member and security in having a home to return to it is pointed out that the altruism and family remittances from urban migration were strategies that bridged the simple dynamic of either urban development or rural development impacting on family welfare it is suggested that household models of economy adopt some measure to express the relationship of household wealth to remittances from urban migrants

an empirical examination of the convexity bias in the pricing of interest rate swaps abstract this paper examines the convexity bias caused by the non linearity of payoffs in the pricing of interest rate swaps off the eurocurrency futures curve the evidence from four major currencies dm and during 1987 1996 suggests that swaps were initially being priced off the futures curve ignoring the convexity adjustment subsequently the market swap rates drifted below the rates implied by futures prices after rejecting alternative explanations we use alternative term structure models to show that the convexity bias is related to the empirically observed swap futures differential we interpret these results as evidence of mispricing of swap contracts during the early years which was eliminated over time

non farm income and inequality in rural pakistan a decomposition analysis this article uses three year panel data to analyse the impact of non farm income on income inequality in rural pakistan after pinpointing the importance of rural non farm income for the poor the article decomposes total rural income among five sources non farm agricultural livestock rental and transfer this decomposition shows that non farm income represents an inequality decreasing source of income the study then decomposes the sources of non farm income this analysis reveals that while non farm unskilled labour income has an equalising effect on income distribution non farm government income has a disequalising effect

portfolio and welfare consequences of debt market dominance the ability to issue debt that pays in units of the domestic good leads a country to accumulate a large and negative net foreign asset position while maintaining a positive position in equity this debt market advantage also helps to explain the weak relationship between the real exchange rate and relative consumption our stylized model matches the key facts about the u s international portfolio the u s real exchange rate and explains nearly 50 of the observed variation in the valuation effects we find that taxing bond market transactions increases the volatility of the exchange rate capital flows and allocations in contrast taxing equity positions stabilizes the exchange rate and capital flows while having little impact on the allocation lastly the paper describes a global solution method for portfolio problems under incomplete markets

drought transfer entitlements and income distribution the botswana experience abstract using 1974 75 and 1985 86 income distribution survey data with the latter supplemented by drought relief data this paper presents an analysis of intertemporal rural household income distribution in botswana despite the fact that the 1974 75 survey was conducted during one of the best agricultural production periods on record and the 1985 86 survey was conducted in the midst of one of the worst after the rural income economy had been weakened by a severe and prolonged drought botswana s rural income inequality did not appear to have increased significantly there was no marked reduction in rural household real incomes the explanation for this outcome is found to lie in the income maintenance strategy pursued by rural households with strong support from transfer entitlement guarantees from private and public sources supplementing rural household incomes

discussion agricultural policy reform and rural livelihoods in central mexico this contribution examines the impact of profound changes to agricultural policy implemented since 1988 on the livelihoods of mexico s rural population detailed studies in four villages show that rural incomes are very unevenly distributed within communities leaving half of households in poverty during the last decade key factors affecting village economies have been international and national rather than specific changes to farm policy most changes have been to the detriment of the communities studied but peasant households have adapted and survived at a price if the worst fears about the consequences of economic liberalisation have not been realised neither have the hopes depressed markets for basic goods and services have limited the growth of the rural economy private investment and provision of services have not been stimulated

absolute and relative gains in international relations theory the problem of absolute and relative gains divides neoliberal institutionalism and structural realism the former assumes states focus primarily on their absolute gains and emphasizes the prospects for cooperation the latter supposes states are largely concerned with relative gains and emphasizes the prospects for conflict existing work in international relations theory generally traces the differences between these two theories to different assumptions about states preferences using a simple game theoretic model this essay offers a reformulation of the problem of absolute and relative gains that links changes in the states behavior the feasibility of cooperation and especially the states concern for relative versus absolute gains explicitly to changes in the constraints facing the states many of the differences between neoliberal institutionalism and structural realism appear as special cases of the model

famine and household coping strategies abstract households faced with risks to their entitlement to food will plan strategically to minimize their impact the task of doing this will be particularly demanding during famines this paper reviews the evidence on household strategies for coping with famine in africa and identifies some distinctive patterns in these strategies which can be used to examine household objectives at times of crisis the management of resources to meet these objectives and limits to the effectiveness of coping strategies in particular it examines the role of asset management and trade offs between maintaining current food consumption levels and protecting the future income generating capacity of the household

limits of arbitrage theory and evidence from the mortgage backed securities market limits of arbitrage theories hypothesize that the marginal investor in a particular asset market is a specialized arbitrageur rather than a diversified representative investor we examine the mortgage backed securities mbs market in this light we show that the risk of homeowner prepayment which is a wash in the aggregate is priced in the mbs market the covariance of prepayment risk with aggregate wealth implies the wrong sign to match the observed prices of prepayment risk the price of risk is better explained by a kernel based on mbs market wide specific risk consistent with the specialized arbitrageur hypothesis a number of recent limits of arbitrage theories predict that the distressed liquidation of assets by hedge funds results in a large drop in asset prices see for example shleifer and vishny 1997 kyle and xiong 2001 gromb and vayanos 2002 geanakoplos 2003 or he and krishnamurthy 2006 these theories are often referenced in explaining episodes of market illiquidity and falling asset prices such as the events during the fall of 1998 in traditional asset pricing theory the marginal investor in every asset market is the same broadly diversified representative investor thus a hedge fund liquidating 200 billion of mortgage backed securities finds a large pool of ready buyers comparable to the entire capital market and the liquidation does not affect expected returns because the representative investor acts quickly to eliminate excess returns according to the limits of arbitrage theory on the other hand the marginal investor in a particular asset market is an investor who specializes in that market in this case liquidations can have large effects on prices given that the relevant set of buyers is a smaller specialized pool of investors

income portfolios in rural ethiopia and tanzania choices and constraints the article analyses the different income portfolios of households using survey data from rural ethiopia and rural tanzania it suggests that the different portfolios held by households cannot be e

neorealism and neoliberalism the classic dialectic between realist and liberal theories of international politics as expressed by robert o keohane ed in neorealism and its critics and richard rosecrance the rise of the trading state can be transcended neither paradigm singularly explains international behavior realism is the dominant approach but liberal theories of transnationalism and interdependence help to illuminate how national interests are learned and changed keohane and fellow critics argue that neorealism articulated definitively in kenneth waltz s theory of international politics 1979 elegantly systematizes realism but concentrates on international system structure at the expense of system process focused tightly on the concept of bipolarity waltz s theory tends toward stasis the unit state level unproductively becomes an analytical dumping ground as a neoliberal counterpoint rosecrance s argument does not go far enough in the tradition of commercial liberalism he argues that an open trading system offers states maneuverability through economic growth rather than through military conquest he tempers his argument with realist considerations of prudence but fails to clarify realist liberal links in his theory or to explore fully the connections between power and non power incentives influencing states behavior a synthesis of neorealism and neoliberalism is warranted a systemic theory using the former to analyze at the level of structure the latter more often at the level of process

smallholder livelihood adaptation in the context of neoliberal policy reforms a case of maize farmers in southern veracruz mexico governments around the world have embraced trade liberalisation as a means of enhancing efficiency to realise economic growth and alleviate poverty likewise the mexican government implemented neoliberal policy reforms the nafta in particular to stimulate sustainable development using the mexican maize sector as illustration this article describes the adaptation process of smallholders to market changes shaped by these reforms going beyond the aggregated level we have investigated smallholders livelihood strategies contrary to what economic models estimated our data suggests that farmers intensified the cultivation of maize rather than switch to sectors in which mexico has a comparative advantage

farm nonfarm linkages in rural sub saharan africa this paper is an accumulation over the past 25 years of a body of detailed work examining the structure of africa s rural nonfarm economy first it systematically reviews empirical evidence on the nature and magnitude of the african rural nonfarm economy it then explores differences across locality and size across countries and over time in an effort to assess likely patterns of growth a subsequent review of key production and consumption parameters allows an estimate of the magnitude of the agricultural growth multipliers in africa the paper concludes with a brief discussion of policies and programs that will be necessary if farm nonfarm growth linkages are to achieve their full potential

farm nonfarm synergies in africa discussion sequence of low market integration and low substitutability between domestic and imported foods in addition if the geographical area over which these multipliers are calculated increases the share of nontradables in the economy rises and multipliers are correspondingly larger this leads the authors to praise the potential for a demand led approach to both agricultural and industrial development anchored in productivity gains in traditional exports while the general proposition is reminiscent of the development strategies advanced by mellor 1986 adelman 1984 and hazell 1984 and by now well accepted the quantification of multiplier effects is inadequate the model used makes unrealistic assumptions that systematically bias upward the size of the growth linkages induced by technological change in farm or nonfarm tradables denoting by t tradables t farm tradables nt nontradables e elasticity of supply response qm elasticity of substitution in consumption between output q and imports m and m income multiplier of an extra 1 of income from farm tradables the key assumptions made by the authors are t e 0 qm o and nt e o yqm a value which does not matter as long as e oo this yields local m between 1 3 and 1 8 reported in table 2 of the delgado et al paper consider now the more realistic characteriza

property relations and economic development the other land reform abstract continued concern for development has led to the suggestion that private property rights should be created to stimulate economic development this suggestion derives from an incomplete understanding of the property relations on the public domain lands in the arid tropics and from a confusion of cause and effect between property and economic productivity a model of the private public boundary in land is developed that challenges the view that wealth would increase if land at the extensive margin were privatized the various types of property regimes in land are defined and explained

household strategies and rural livelihood diversification this article reviews the recent literature on diversification as a livelihood strategy of rural households in developing countries with particular reference to sub saharan africa livelihood diversification is defined as the process by which rural families construct a diverse portfolio of activities and social support capabilities in order to survive and to improve their standards of living the determinants and effects of diversification in the areas of poverty income distribution farm output and gender are examined some policy inferences are summarised the conclusion is reached that removal of constraints to and expansion of opportunities for diversification are desirable policy objectives because they give individuals and households more capabilities to improve livelihood security and to raise living standards

global communications and national power life on the pareto frontier regime analysis has focused on issues of market failure the resolution of which depends upon knowledge and institution building global communications regimes however have been concerned either with issues of pure coordination or with coordination problems with distributional consequences outcomes have been decided by the underlying distribution of national power in those areas where power was asymmetrically distributed and there was no agreement on basic principles and norms radio broadcasting and remote sensing no regime was formed in those areas where distributional issues could not be unilaterally resolved allocation of the radio spectrum and telecommunications regimes were created although both principles and rules changed with alterations in national power capabilities

research on rural to urban migration in ldcs the confusion frontier and why we should pause to rethink afresh abstract over 12 years of intensive research in the field of rural to urban migration have left the field beset with loss of direction and some serious doubts as to 1 whether research has really provided practitioners with more specific means of intervention 2 proper understanding of such intervention its justification and results 3 the areas in which the marginal benefit of extra research amounts to zero 4 those areas in which some consensus has emerged 5 which problem areas and specific issues merit intensive migration research in the coming years and 6 whether or not the academic profession has based its migration research effort in the past decade on an inappropriate set of presuppositions or even worse on invalid postulates a few examples of confusion and or fallacies that render this list more concrete are presented in this paper these are drawn from the areas of migration and fertility migration and education migration and the distribution of income by size migration and urban unemployment migration and the politics of economics migration and policy measures this paper then makes a plea for a major re evaluation which could and should provide a turning point in academic work and institutional thought the emphasis is on reformulation of the policy related presumptions on which research has been based for the past dozen years rather than trying to reach a better understanding of the decision making process generating rural to urban migration and its sectoral and overall social implications so as to devise more effective measures to contain reverse it the starting point should be an effort to effectively manipulate the phenomenon so as to turn it into a vehicle of national development and personal betterment