analyzing nutritional impacts of policies an empirical study for malawi summary widespread malnutrition in developing countries calls for appropriate strategies presupposing good knowledge about nutritional impacts of policies little previous work has been carried out in this direction especially with respect to micronutrients we use representative household data from malawi and develop a demand systems approach to estimate income and price elasticities of food demand and nutrient consumption these estimates are applied for policy simulations given multiple nutritional deficiencies income related policies are better suited than price policies to improve nutrition while consumer price subsidies for maize improve calorie and mineral consumption they can worsen vitamin consumption in urban areas

male interracial wage differentials competing explanations persistent interracial wage differentials present a challenge for neoclassical models of discrimination which claim that long rung competition is not consistent with persistent discrimination this study provides an empirical examination of the missing variable and job competition models of interracial wage inequality the results argue strongly against the missing variables approach and strongly in favor of the job competition model specifically this study finds that about one half of the male african american white and latino white interracial wage differentials are due to market discrimination against african americans and latinos in addition the positive and significant coefficients on the race gender employment density variables strongly affirm the job competition model s contention that access to white especially male dominated jobs increases an individual s wage rate regardless of race racial job segregation then is an important explanatory variable for racial wage discrimination copyright 1999 by oxford university press

impacts in uganda of rising global food prices the role of diversified staples and limited price transmission this study assesses the potential impact of rising world food prices on the welfare of ugandan households while uganda experienced sharply higher food prices in 2008 as a landlocked food exporting country the causes of those price changes were mainly regional and indirect rather than directly transmitted from global markets using trade volumes food prices and household survey data we describe how uganda unlike some other countries is partially shielded from direct impacts of global food price movements although the majority of ugandans are net food buyers the adverse impact at household level of rising global prices is moderated by the relatively large quantity and range of staples consumed that come from home production moreover several of these are not widely traded some population groups in uganda are vulnerable to rising food prices however primarily those for whom maize is an important staple including those dependent upon humanitarian relief and the urban poor only a relatively small group of ugandan households will benefit directly and immediately from rising food prices the significant net sellers of food crops constituting between 12 and 27 of the population in this assessment we do not estimate the level and extent of wider second round effects from these higher prices jel classification q18 r22

the determinants of dismissals quits and layoffs a multinomial logit approach in efficiency wage models workers productivity depends positively on the wage giving firms an incentive to pay wages above their market clearing level two models in this literature are the shirking model of shapiro and stiglitz 12 and bowles 1 and the turnover cost model of stiglitz 13 schlicht 11 and salop 10 in the shirking model a higher wage and a higher unemployment rate raise the cost of losing one s job thereby discouraging workers from shirking and increasing their effort in the turnover cost model a higher wage reduces quits and thus lowers the firm s cost of hiring and training new workers given the role of separations in efficiency wage models it is important to understand the determinants of separations this study uses data on individual workers to examine the determinants of dismissals quits and layoffs within the first six months of a hire paying particular attention to dismissals because of the prominence of the shirking model in the efficiency wage literature the purposes of this study are to test whether higher unemployment lowers dismissals as predicted by the shirking model and to examine the effect of firm variables related to the costs of monitoring and shirking on the probability of a dismissal in addition this study provides insight into the effects of firm characteristics and worker characteristics on dismissals quits and layoffs

neoclassical and marxian conceptions of production incorporating information deficiencies into the neoclassical paradigm has introduced some broad similarities with the marxian analysis of the labor process both approaches predict the existence of a variety of contractual regimes and that workers with equal productivities can be adjudged unequal in the market place and while the marxian approach sees unemployment as inevitable the new neoclassical models also allow for equilibrium unemployment these similarities and areas of divergence in the assessment of productive efficiency and welfare are explored a crucial difference arises from the individualism of the neoclassical model as opposed to the class approach in the marxian model copyright 1988 by oxford university press

union power cost of job loss and workers effort the authors hypothesize that the effectiveness of external threats in raising workers effort is mediated by among other labor market conditions the presence or absence of a powerful union in particular they argue that because powerful unions reduce the potency of the external threat of job loss by making it more difficult for employers to dismiss workers the pace of work is less responsive to such a threat in strongly unionized plants than in weakly unionized plants the results of an analysis of data from the 1990 workplace industrial relations survey in britain support this hypothesis the analysis also yields evidence that effort is increased where workers are rewarded individually according to results and where there are various communication channels between workers and management

testing the morale theory of nominal wage rigidity this paper tests the morale theory of nominal wage rigidity according to which firms resist making nominal cuts to workers pay even in adverse economic conditions because such cuts hurt worker morale and productivity the authors analyze data from an employer employee survey they conducted in japan in 2000 that year coincided with a rare spell of deflationary recession which the authors argue is a good setting in which to study how nominal pay cuts affect morale they find that a nominal annual pay freeze experienced by 21 of the sampled workers demoralized workers by reducing their trust in the firm and that even greater demoralization not wholly attributable to reduced trust was associated with a nominal pay cut which affected 17 of the workers the observed negative relationship between nominal pay cuts and morale persists even when the estimation includes controls and firm fixed effects

employment rents and the incidence of strikes a new measure of labor market tightness on workers behavior the employment rent is modeled as a determinant of workplace conflict an empirical estimate of the employment rent workers expected cost of job loss is calculated it is argued that the cost of job loss affects strike incidence this relationship is tested by estimating an econometric model of strike incidence for the united states from 1955 to 1983 the cost of job loss is shown to explain a large percentage of the variation in strike incidence the cost of job loss is a far superior explanatory variable than the unemployment rate which is commonly used in strike models copyright 1987 by mit press

incentives pay and performance a study of australian employees the paper analyses the determinants of self reported work effort using a 1988 survery of australian employees while controlling for the endogeneity of the firm s choice of incentives and pay it is found that direct incentive schemes have predicted effects and the efficiency wage hypothesis is supported pay and work effort are positively correlated two efficiency wage models are tested akerlof s gift exchange model and work discipline arguments regarding monitoring difficulties and threats of dismissal the latter argument is broadly consistent with the data

efficiency wages interfirm comparison and unemployment the paper presents an efficiency wage model where worker effort depends on own wages relative both to wages of other workers in the firm and to similar workers in other firms first we show how the solow conditions are modified if internal comparison effects are at work second we discuss the effect of internal wage comparison on wage inequality within firms third we study unemployment and relative wage determination within a general equilibrium model and analyze the effect of technological change and various tax policies on equilibrium unemployment and relative wages finally the short run effects of aggregate demand shocks are analyzed a popular argument for the existence of involuntary unemployment is that a worker s effort rises with wages giving employers incentives to set wages above market clearing levels it is often assumed that the worker s effort is a function of the wage level with no reference to the size of the wage in comparison with that received by other workers yet such comparisons are likely to influence an individual in his effort choice if this is the case then it seems equally likely that workers compare themselves with others both internal and external to their place of work this paper contributes to the efficiency wage literature by providing an understanding of wage setting and unemployment determination within a model where workers efforts depend on their wage relative to both the wages of other workers at the same firm and to the wages of similar workers at other firms

the relationship of wages to the value of labour power in marx s labour market having explicitly rejected malthus law of population marx asserted in his early writings that it was competition that would keep wages fluctuating the value of labor power even though he did not consider the production of labor power to be a capitalist process this paper notes the inconsistency in this approach and then proposes that implicit in marx s mature works there is a consistent mechanism through which wages gravitate toward the value of labor power this uses both the flexible historical and moral element of the value of labor power and the reserve army hypothesis this combination explains why wages follow a relatively even path over time a model of the labor market is developed which appears to be consistent with marx s mature writing copyright 1991 by oxford university press

the organization of work a historical dimension abstract an evaluation of the organizational efficiencies of various modes of production by o e williamson has led him to conclude that given identical technologies the factory was more efficient than the putting out system the superior organizational efficiency of the former he maintains was one reason for the transition to factory production during the nineteenth century this paper challenges that view it is argued that the way in which williamson evaluates efficiency is open to methodological and other objections and that there is limited empirical support for his hypothesis given an identical technology the evidence suggests that the putting out system was usually able to compete with the factory

critique and transformation on the hypothetical nature of ecosystem service value and its neo marxist liberal and pragmatist criticisms abstract ecosystem service valuation esv attempts to transform the opposition of human economic necessity and ecological conservation by valuing the latter in terms of the services rendered by the former however despite a number of esv inspired sustainability initiatives since the 1990s global ecological degradation continues to accelerate this suggests that esv has fallen far short of its goals of sustainable social transformation a failure which has generated considerable criticism this paper reviews three prominent lines of esv criticism 1 the neo marxist criticism which emphasizes the fictitious character of ecosystem commodities 2 the liberal criticism through friedrich hayek s concept scientistic objectivism and 3 the pragmatist criticism of value monism although each form of criticism provides insight into the limitations of esv all share esv s inability to discern what kind of social transformation is possible unable to provide an account of their own immersion in social and historical context these approaches operate in the hypothetical in light of these shortcomings this paper advances a critical theory approach which we contend provides conceptual tools uniquely well suited to more adequately address the question of social transformation

who gets what in environmental policy this paper shows how anticipated impacts of environmental projects and policies can be valued in terms of money as a common denominator and costs and benefits assigned in an acceptable distribution to that effect a new mechanism design of situational contracting is introduced that generates information on willingness and ability to pay or to cooperate in a realization focused capability approach to fairness the situational contract reveals preferences and merit considerations of the relevant stakeholders and deals with market failure in a structured combination of political guidance expert opinions and co production

implications of high food prices for poverty in pakistan the study estimates the impacts of rising world food prices on poverty in rural and urban areas of pakistan household income and expenditure data for 2004 2005 is used to estimate compensated and uncompensated price and expenditure elasticities using the linear approximation of the almost ideal demand system taking the unexpected component of higher domestic food prices in 2007 2008 own and cross price compensated elasticities are used to derive the changes in the quantity consumed food expenditure and impacts on poverty assuming the food crisis happened in 2004 2005 the results indicate that poverty increased by 34 8 severely affecting the urban areas where poverty increased by 44 6 as compared to 32 5 in rural areas the estimates show that 2 3 million people are unable to reach even one half of poverty line expenditures while another 13 7 million are just below and 23 9 million are just above the poverty line in the short run it is important to ensure food availability to these people in the long run the policy environment of subsidizing urban food consumers by keeping wheat prices lower than the international price needs to be reconsidered to provide the right incentives to increase food availability

unemployment long term employment relations and productivity growth using an effort regulation type of efficiency wage model it is demonstrated that a firm may respond to slackening labor markets by acting to increase the intensity with which workers work the magnitude of this work intensity effect depends on the structure of employment relations where long term employment relations are prevalent the effect of labor market slack on work intensity may be diminished these propositions are tested empirically by estimating the effects unemployment and long term employment have on productivity growth in two digit manufacturing industries copyright 1987 by mit press

changing food prices and rural welfare a nonparametric examination of the cote d ivoire changes in and absolute levels of agricultural pricing and food production may affect consumer food prices producer incentives income distribution and government revenue the nature of these relationships and effects are of especial policy concern in developing countries nonparametric estimation techniques are applied to 1985 living standards household survey data of the cote divoire to estimate the impact of a food price change on income distribution this study examines how food prices are related to agricultural income across rural income in the country in examining a different country considering a wider variety of crops estimating engel curves and applying confidence bands the analysis extends work of a s deaton analysis indicates that while food grown for home consumption is important net food sales and a percentage of total expenditure seem inconsequential at any level of welfare agricultural households grow crops to meet their consumption needs and sell the surplus only when harvests are especially bountiful income elasticities with respect to prices are therefore small these findings suggest that no simple set of small price changes will significantly increase the marketed surplus of food and that structural adjustment policies may be pursued without concern for devastating poor households research is needed into ways of increasing food production through methods other than price changes results also indicate that price increases do not necessarily benefit only large well off farms and that a wide range of issues may be considered with nonparametric estimation techniques

austrian economics and the limits of markets sagoff s recent criticisms of the shadow pricing of environmental goods deploy arguments from within the austrian tradition of economics against market mimicking approaches to public policy his arguments against market mimicry by public authorities do not lead him to scepticism about markets rather they form part of an austrian argument for solutions to environmental problems within actual markets themselves in this paper i argue that it is not only shadow pricing but the use of actual markets that is open to austrian forms of criticism hayek s epistemic arguments against central planning and in defence of market economies are more ambivalent than is often supposed the paper examines the ways in which the premises in hayek s own arguments point in the opposite direction to the epistemic limits of markets and in particular their limitations for the resolution of environmental problems copyright oxford university press

valuing nature paying for ecosystem services and realizing social justice a response to matulis 2014 debates about the role of economic valuation in market based conservation have proliferated in recent years specifically scholars have engaged with the justice implications of non market valuation and the emergence of new policy instruments paying for or trading ecosystem services and biodiversity i hereby contribute to these debates by responding to a published commentary in this journal and i shed light on what i believe should be a new agenda for critical scholarship of market based conservation i argue for more precision in our claims distinguishing across market based instruments and across types of outcomes and for a more nuanced account of the ethical connotations of such instruments which should involve analyzing both unequal socio economic relations and culturally bounded conceptions of justice overall i advocate for the development of a more robust empirical basis to derive generalizations on the procedural distributive and livelihood implications of market based instruments for conservation

should i stay or should i go career choices for young workers in latin america labor market institutions shape the return to workers skills they define the incentives of firms and workers to invest in general and specific skills affecting the returns to experience and tenure this paper presents an empirical assessment of this hypothesis we take advantage of rich administrative data from brazil and chile two countries with different regulatory frameworks we focus on young workers as they face to a greater extent the trade off between accumulating general or specific skills the analysis is motivated by a simple conceptual framework from which we derive empirical predictions it takes into account the potential endogeneity of occupational choices while allowing for heterogenous returns to tenure and experience we find positive average returns to both dimensions in both countries with larger returns to tenure in brazil and larger returns to experience in chile this is consistent with the original conjecture as the more rigid labor market legislation in brazil encourages firms to carry out additional investments in young workers s specific skills chile s institutions on the contrary promote the acquisition of general skills we further examine how these returns differ by educational attainment an important policy consideration in the region and find that more educated workers in both countries face larger returns to experience and tenure relative to their less educated counterparts

ecological economics and the politics of knowledge the debate between hayek and neurath hayek s epistemic arguments against planning were aimed not just against socialism but also the tradition of ecological economics the concern with the physical preconditions of economic activity and defence of non monetary measures in economic choice were expressions of the same rationalist illusion about the scope of human knowledge that underpinned the socialist project neurath s commitment to physicalism in natura calculation and planning typified these errors neurath responded to these criticisms in unpublished notes and correspondence with hayek these highlighted the epistemological premises his work shared with hayek s representing a response to hayek from hayek s own assumptions this paper examines the cogency and continuing relevance of the arguments in this debate

gender awareness in modeling structural adjustment abstract the macroeconomic models underpinning the design of structural adjustment programs are gender blind this paper discusses strategies for introducing gender analysis into these models and evaluates the strengths and weaknesses of the models from a gender perspective it concludes that besides being blind to gender the models are also blind to the waste of resources and impoverishment that stems from deficient aggregate demand undemocratic decision making and directly unproductive expenditures that buttress male power this waste is however likely to be diminished by moves to more egalitarian systems of gender relations entailing changes in the structure of entitlements and the social matrix in which macroeconomic processes are embedded

labor market segmentation to what paradigm does it belong the dictionary defines a paradigm as a model or pattern in grammar an example of a conjugation or declension showing a word in all its inflectional forms a paradigm is thus a practical example which perfectly illustrates an abstract principle its hallmark in this dictionary definition is the complete correspondence between the abstract and the applied between theory and praxis the term was adapted to the discussion of scientific theory by thomas kuhn and its current vogue in economics is attributable directly to his book as kuhn used the term paradigm retains its double meaning of theory and of praxis but the relationship between the two becomes ambiguous scientists believe kuhn seems to argue that their inquiry is based upon a theory of how the world operates and how the investigation of its operation ought to proceed but normal science is in fact largely a set of practices in which members of a given scientific community customarily engage students seeking to follow their professors in careers in which the latter will judge them and ultimately determine their fate are not encouraged to andertake projects which depart radically from those which their professors conceive for them when suggestions for such projects trise either from students or competing nembers of the community they are as often reated by sarcasm and ridicule as the subect of seasoned discourse and debate in this rocess what students acquire is less an abtract understanding of what they are doing han a set of habits or instincts about what constitutes a legitimate mode of inquiry or a plausible explanation the disjuncture between theory and practice which arises in this way creates the potential for a scientific revolution to ask in this context about the paradigm to which notions of labor market segmentation belong is thus to ask a question about the relationship between that mode of research and the theory and practice of normal economics i never considered myself a revolutionary indeed quite the contrary but as an exponent of labor market segmentation in the community of normal economics i can assure you that labor market segmentation does not fit the paradigm the sentiments and reactions which kuhn tells us greet the abnormal and aparadigmatic in a discipline that is fury disdain resentment sarcasm and condescension have definitely greeted labor market segmentation this is a matter of fact an observation about praxis the question is then what aspect of the conceptual structure of the discipline accounts for this practical result in most discussions labor market segmentation is contrasted with human capital theory but this does not account for the hostile reception it has received it fails first because the treatment accorded market segmentation by the profession is not that different from the treatment accorded human capital when it first appeared gary becker describes his personal experience on this score in the introduction to his book of essays the economic approach to human behavior and the disdain and antagonism which he attributes to his colleagues are at least as great as anything experienced by the proponents of segmentation but perhaps more fundamentally the two views are not as we shall see shortly necessarily in conflict professor of economics mitsui professor for probems of contemporary technology massachusetts intitute of technology

the impact of export crop production on nutritional status in cote d ivoire abstract in exploring the implications of the commercialization of agriculture on nutrition in cote d ivoire this paper found that sales of export crops combined with the domestic marketing of food crops represent the most important sources of incomes for rural households rich and poor alike increasing the price of the heavily taxed export crops cocoa and coffee will raise incomes throughout the income distribution increasing the profitability and productivity of cotton will not only raise rural incomes but will also have positive distributional consequences a reduced form nutrition model was estimated in order to examine the impact of income as well as the allocation of land to the production of the major export crops rather than to food crops on nutritional status results indicate that higher incomes improve long term nutritional status and that the share of land allocated to export crops does not affect the nutritional status of preschool aged children even when controlling for income in combination these facts suggest that raising incomes through exploiting comparative advantage in export crops such as coffee cocoa and cotton will have positive nutritional outcomes in cote d ivoire

where is the value in valuing pollination ecosystem services to agriculture abstract current national and global scale monetary valuation of pollination services do not accurately estimate the contribution of wild pollinators to agricultural production first ecosystem wild pollination services remain largely bundled with those of managed pollinators this problem is compounded by the fact that the dependency of crops on pollination a key parameter used in current valuations does not reflect variation in pollinator density crop cultivars and growing conditions that exist in practice over half of the 153 billion of estimated global pollination service value in 2005 is based on estimates of pollinator dependency from crops with fewer than three field studies that measure actual levels of pollinator activity and corresponding fruit set the resulting uncertainty may be most distorting when applied to widely planted intensive oilseed crops furthermore current valuations are underpinned by simplistic assumptions regarding the likelihood of pollinator decline and the impact on agricultural prices although efforts to motivate wild pollinator protection through their ecosystem service value remain highly circumscribed by conceptual and empirical limitations we identify the need to go beyond technical solutions and develop a critical framework that could account for why pollinator conservation has come to be predominantly justified in these terms to begin with

a near rational model of the business cycle with wage and price inertia this paper presents a model in which insignificantly suboptimal behavior causes aggregate demand shocks to have significant real effects the individual loss to agents with inertial price wage behavior is second order in terms of the parameter describing the shock while the effect on real economic variables is first order thus significant changes in business activity can be generated by anticipated money supply changes provided that some agents are willing to engage in nonmaximizing behavior which results in small losses

new foundations for ecological economics abstract ecological economics has been repeatedly described as transdiciplinary and open to including everything from positivism to relativism i argue for a revision and rejection of this position in favour of realism and reasoned critique looking into the ontological presuppositions and considering an epistemology appropriate for ecological economics to meaningfully exist requires rejecting the form of methodological pluralism which has been advocated since the start of this journal this means being clear about the differences in our worldview or paradigm from others and being aware of the substantive failures of orthodox economics in addressing reality this paper argues for a fundamental review of the basis upon which ecological economics has been founded and in so doing seeks improved clarity as to the competing and complementary epistemologies and methodologies in part this requires establishing serious interdisciplinary research to replace superficial transdisciplinary rhetoric the argument places the future of ecological economics firmly amongst heterodox economic schools of thought and in ideological opposition to those supporting the existing institutional structures perpetuating a false reality of the world s social environmental and economic systems and their operation

are wages too low empirical implications of efficiency wage models firms may pay efficiency wages to enhance productivity the conventional presumption is that efficiency wages are inefficiently high because they lead to unemployment that is also inefficiently high government policies that lower wages raise output using a simple and general efficiency wage model this paper finds a necessary and sufficient condition for the opposite conclusion if the condition holds wages are inefficiently low leading to productivity that is also inefficiently low it is the high wage policies that raise output even if they also lower employment published empirical results support the condition no evidence is found for the conventional presumption

salaries and piece rates compensation can take many forms remuneration can come as pecuniary payments as fringes such as health and pension benefits or as a nonpecuniary reward such as plush office furniture that costs the firm less than it benefits the worker a significant literature has examined the trade offs between pecuniary and nonpecuniary compensation the modern work having been pioneered by rosen 1974 more recently another body of literature has examined the selection of method of total compensation ignoring the distinction between pecuniary and nonpecuniary payment this work has focused on risk and incentive factors it has resulted in comparisons of compensation based on absolute output levels to that based on relative performance it has also led to explorations of the relation of compensation to experience over the work life 2 little attention has been paid to what may be among the most important and obvious distinction in methods of compensation namely the choice between a fixed salary for some period of time that is paying on the basis of input and some workers receive compensation that is specified in advance and not directly contingent on performance instead it depends on an input measure such as hours worked for others compensation is directly related to output this essay is an attempt to predict a firm s choice of compensation method piece rates are defined more rigorously among the more important factors discussed are worker heterogeneity incentives sorting considerations monitoring costs and asymmetric information one result is that salary workers tend to be of lower quality and more homogeneous than are their piece rate counterparts numerous additional results are provided helpful comments by victoria lazear and yoram weiss are gratefully acknowledged support was provided by the department of labor and the national science foundation 1 see lazear and rosen 1981 stiglitz 1981 holmstrom 1982 green and stokey 1983 2 see lazear 1979 1981 and harris and holmstrom in press

monetary valuation of ecosystem services it matters to get the timeline right in the abundant literature dealing with the monetary valuation or monetization of ecosystem services mes with very few exceptions the concept is presented as having emerged in 1997 in fact there is a long history starting in the late fifties but largely ignored of sustained attempts to assign monetary values to nature s services these early efforts encountered many conceptual and methodological roadblocks which could not be resolved and led a number of researchers to argue that monetary valuation was not a fruitful approach it is in that context that mes was hailed by some in 1997 as a promising way to integrate environmental goods and services into the logic of economic markets knowledge of the full timeline casts a very different light in particular on the difficulties currently encountered in the practice of mes far from being the expected growing pains of a young discipline these difficulties turn out to be long standing problems that have eluded solution over the last half century and appear intrinsically unresolvable this perspective suggests that at this point it is advisable to look at alternatives to mes for the integration of nature into economic decisions

unemployment and the efficiency wage hypothesis there has been much recent discussion of the reasons why prices in certain markets and in particular in labour markets may not adjust to eliminate excess supply the absence of speedy adjustment of prices is an essential feature of the recent models of disequilibrium macroeconomics but for the most part no explanation for this absence is provided from within those models one explanation that has been around in the literature for some time and has been receiving increasing attention recently is the efficiency wage hypothesis initially applied to developing economies see leibenstein i957 it has more recently been adapted to developed economies by weiss i 980 and used in the context of a keynesian macroeconomic model by hart i 980 similar concepts have been applied to the credit market by stiglitz and weiss i98i the purpose of the present paper is to explore further the conditions under which the notion of an efficiency wage is applicable and can provide an explanation of involuntary unemployment the essential feature of the efficiency wage hypothesis is that the productivity of a firm s employees increases as their wage is increased at least over an economically relevant part of its range if the wage paid by the firm is denoted by w the number of employees by l and the productivity of each employee by p w where p w o then the effective labour force of the firm e can be represented by

anatomy of a crisis the causes and consequences of surging food prices although the potential causes and consequences of recent rising international food prices have attracted widespread attention many existing appraisals are superficial and or piecemeal this article attempts to provide a more comprehensive review of these issues based on the best and most recent research as well as on fresh theoretical and empirical analysis we first analyze the causes of the current crisis by considering how well standard explanations hold up against relevant economic theory and important stylized facts some explanations turn out to hold up much better than others especially rising oil prices the depreciation of the u s dollar biofuels demand and some commodity specific explanations we then provide an appraisal of the likely macro and microeconomic impacts of the crisis on developing countries we observe a large gap between macro and micro factors which when identifying the most vulnerable countries often point in different directions we conclude with a brief discussion of what ought to be learned from this crisis

valuing ecosystem services on the basis of service providing units a potential approach to address the endpoint problem and improve stated preference methods abstract standardized methods are required to measure ecosystem services in order to value them in this paper we argue that the service providing unit spu concept may help achieve this objective by promoting the systematic quantification of the key components of nature that provide services e g population density of a key pollinator and linking these with measurable outcomes for human well being we discuss and provide examples of the potential role of the spu concept in improving economic valuation of ecosystem services further we suggest the concept may contribute to addressing the endpoint problem which can be defined simply as the inability of researchers to communicate the implications of environmental change in a way that is understood by a broad cross section of society the endpoint problem is of particular relevance to stated preference approaches and we discuss the capacity of the spu concept to refine these approaches we argue that the concept enhances interdisciplinary collaboration promoting more validated well informed valuation applications it also has the potential to minimize warm glow effects and put the notion of marginal changes in the provision of ecosystem services in a new light

a theory of dual labor markets with application to industrial policy discrimination and keynesian unemployment this paper develops a model of dual labor markets based on employers need to motivate workers in order to elicit effort from their workers employers may find it optimal to pay more than the going wage this changes fundamentally the character of labor markets the model is applied to a wide range of labor market phenomena it provides a coherent framework for understanding the claims of industrial policy advocates it also can provide the basis for a theory of occupational segregation and discrimination that will not be eroded by market forces finally the model provides the basis for a theory of involuntary unemployment

environmental law the limits of markets a number of writers have drawn on hayek s epistemic defence of market institutions to argue that free markets and tort law are best placed to overcome the knowledge problems associated with the environmental sphere this paper argues to the contrary that this austrian school approach itself suffers from significant knowledge problems the first of these relates to the ability of austrian economics to assign victim compensation and the second to the difficulty of establishing causation in complex environmental problems the paper will also show how alternative approaches may not suffer from these epistemic challenges and are better placed to overcome them

the quantification and valuation of ecosystem services article i nfo article history received 7 august 2010 accepted 16 october 2010 this paper explores differences between economic and ecological criteria for identifying measuring and evaluating ecosystem services it argues that economic stakeholders user groups generally do well in identifying these services and assigning prices to them these prices arise spontaneously in and serve to coordinate market activity related to the environment the relevant ecological information which markets gather and apply tends to be dispersed contingent particular local transitory and embedded in institutions and practices ecologists and other scientists in contrast often seek to understand how ecosystems work and which populations and processes provide ecosystem services the knowledge science seeks unlike the information markets gather tends to be centralized collaborative collective and consensus based science pursues concepts and principles that are timeless and general rather than ephemeral and site specific the paper contrasts the dispersed and decentralized information organized by markets with the collective and centralized knowledge characteristic of science the paper argues that the conceptual distance between market based and science based methods of assembling information and applying knowledge defeats efforts to determine the value of ecosystem services in any integrated sense

weak comparability of values as a foundation for ecological economics the main argument of this paper is that weak comparability of values should be seen as one characteristic feature of ecological economics the formal properties of the concepts of strong comparability implying strong or weak commensurability and weak comparability implying incommensurability will be clarified multicriteria evaluation offers the methodological and mathematical tools to operationalize the concept of incommensurability at both macro and micro levels of analysis the concept of incommensurability of values already has a long tradition in economics moreover we will show that analytic philosophy theories of complexity post normal science and the recent theories of rationality lead with different trajectories to a non algorithmic approach which in our view could be implemented by some forms of multicriteria evaluation 1998 elsevier science b v all rights reserved

self reported food insecurity in africa during the food price crisis this article analyzes data on self reported food insecurity of more than 50 000 individuals in 18 sub saharan african countries over the period 2005 2008 when global food prices increased dramatically the average level of self reported food insecurity was high but remarkably stable over time at about 54 however this average hides large heterogeneity both within countries and across countries in eight of the sample countries self reported food security improved while it worsened in the ten other countries our results suggest that heterogeneous effects in self reported food security are consistent with economic predictions as they are correlated with economic growth and net food consumption both at the household and country level specifically in the face of rising food prices self reported food security improved on average in rural households while it worsened in urban households a finding that holds when using global prices or domestic food prices improvements in food security over time were also positively correlated with net food exports and gdp per capita growth while the self reported indicator used in this paper requires further study and one should carefully interpret the results our findings suggest the need for a critical evaluation of the currently used data and numbers in the public debate on food prices and food insecurity

the ecological economics of economic democracy abstract ecological economics is at a sharp crossroads today mostly due to the unprecedented scale of the intertwined social and ecological crises we face we argue that the discipline should engage with the thinking and practices around alternatives to capitalism more substantially as this is essential and invaluable for the discipline s ability to contribute to a just and sustainable future we outline an agenda for future ecological economics research on economic alternatives that are shaped by the concrete ways in which economic democracy deals with issues of uncertainty complexity and value incommensurability and contribute to a kind of political economy that ecological economics would advocate we lay out how this question could be operationalised within the context of allocation and exchange i e alternatives to market production and investment i e alternatives to capitalist firm and economic subjectivities i e alternatives to self interest

are we overestimating the negative impact of higher food prices evidence from ghana most studies of the welfare impact of higher food prices adopt deaton s approach based on the first order effect of prices changes using income and expenditure survey data this paper explores the impact of higher maize and food prices in ghana and considers the sensitivity of results to changes in several assumptions if second order effects are included incorporating household response to price changes the welfare impact of food price increases is more positive but only modestly so however if we assume that marketing margins are constant in real terms rather than proportional to prices the welfare impact is substantially more positive these findings highlight the need for more research on the behavior of marketing margins under volatile prices

the inefficiency of unemployment the supervision perspective we study an example economy with costly labor monitoring under a wage cum supervision arrangement where workers utilities are not equalized across sectors workers are identical to each other our main task is to look for and find a set of flat taxes and subsidies that bring about a pareto improvement over the laissez faire solution we show that any of such welfare improving schemes involves a tax on labor income from those workers whose utility is the lowest

prospects for a heterodox economics of the environment and sustainability this paper introduces a special issue on heterodox economics of the environment and sustainability at present humanity faces several challenges such as resource scarcity biodiversity loss and climate change and yet we would argue contributions from traditional heterodox schools of thought such as post keynesianism marxism and to a lesser extent institutionalism have had relatively little to say about them instead the economic analysis of environmental issues has been dominated by approaches inspired by neoclassical economics and latterly by ecological economics the special issue is part of an effort to stimulate more heterodox work on the environment and to explore connections between existing groups of scholars particularly between ecological and heterodox economists

rice prices and income distribution in thailand a non parametric analysis rice is a staple crop in thailand significantly entering both household production and consumption this paper examines the effect of rice prices on the distribution of real income across households taking into account household characteristics and geographical location the data set is a large scale survey of 11 893 households simple nonparametric techniques for regression and density estimation are used these methods depend on few assumptions and generate flexible graphical results that are directly informative about the problem at hand the main results are that higher rice prices should benefit all rural households but the largest benefits accrue to rural households in the middle of the income distribution copyright 1989 by royal economic society

urban agriculture poverty and food security empirical evidence from a sample of developing countries urban agriculture may have a role to play in addressing urban food insecurity problems which are bound to become increasingly important with the secular trend towards the urbanization of poverty and of pop ulation in developing regions our understanding of the importance nature and food security implica tions of urban agriculture is however plagued by a lack of good quality reliable data while studies based on survey data do exist for several major cities much of the evidence is still qualitative if not anec dotal using a recently created dataset bringing together comparable nationally representative house hold survey data for 15 developing or transition countries this paper analyzes in a comparative international perspective the importance of urban agriculture for the urban poor and food insecure some clear hints do come from our analysis on the one hand the potential for urban agriculture to play a sub stantial role in urban poverty and food insecurity reduction should not be overemphasised as its share in income and overall agricultural production is often quite limited on the other hand though its role should also not be too easily dismissed particularly in much of africa and in all those countries in which agriculture provides a substantial share of income for the urban poor and for those groups of households to which it constitutes an important source of livelihoods we also find fairly consistent evidence of a positive statistical association between engagement in urban agriculture and dietary adequacy indicators

performance responses to competition across skill levels in rank order tournaments field evidence and implications for tournament design tournaments are widely used in the economy to organize production and innovation we study individual data on 2775 contestants in 755 software algorithm development contests with random assignment the performance response to added contestants varies nonmonotonically across contestants of different abilities precisely conforming to theoretical predictions most participants respond negatively whereas the highest skilled contestants respond positively in counterfactual simulations we interpret a number of tournament design policies number of competitors prize allocation and structure number of divisions open entry and assess their effectiveness in shaping optimal tournament outcomes for a designer

the impact of food inflation on urban poverty and its monetary cost some back of the envelope calculations this paper uses a sample of 73 developing countries to estimate the change in the cost of alleviating urban poverty brought about by the recent increase in food prices this cost is approximated by the change in the poverty deficit that is the variation in financial resources required to eliminate poverty under perfect targeting the results show that for most countries the cost represents less than 0 1 percent of gross domestic product however in the most severely affected it may exceed 3 percent in all countries the change in the poverty deficit is mostly due to the negative real income effect of those households that were poor before the price shock while the cost attributable to new households falling into poverty is negligible thus in countries where transfer mechanisms with effective targeting already exist the most cost effective strategy would be to scale up such programs rather than designing tools to identify the new poor

world food prices and poverty incidence in a food exporting country a multihousehold general equilibrium analysis for thailand a multisectoral multihousehold general equilibrium model of the thai economy is used to analyze the implications of recent increases in international food prices higher food prices especially staple grains worsen poverty incidence in thailand despite the presence of large numbers of poor farmers many of whom benefit from higher prices the positive effect on the welfare of poor farmers is dominated by the negative effect on poor consumers of the recent price increases for rice sugar cassava maize soybeans urea and petroleum the increases in rice prices raise poverty incidence the most despite thailand being the world s largest rice exporter

the global food crisis disaster opportunity or non event household level evidence from cote d ivoire summary using 2008 lsms data for cote d ivoire we study the welfare implications of the price increase of key imported staple food rice and consider the consumption smoothing effect of locally produced food and cash crop varieties while middle income urban households are adversely affected by rising rice prices relatively poor rural households benefit availability of local staple alternatives leads to further income redistribution from net consumers toward net producers of staples by contrast the ability to generate income from tropical cash crops not only improves the welfare of rural households but helps smooth the consumption of urban households

institutions and the environment the case for a political socio economy of environmental conflicts this article presents a sympathetic but critical examination of institutional ecological economics iee a heterodox body of work on environmental governance as developed separately by j paavola and a vatn we highlight the theoretical limitations of iee related to two issues the causes of the emergence of environmental conflicts and the logics driving their regulation these limitations are all related to the underlying theories of institutional change in which power and legitimacy based explanations are confusedly combined both authors develop a normative perspective in which legitimacy becomes the main concern we argue that this perspective leads to contradictions in their respective approaches and provides no or only partial insights into the conditions of the emergence and regulation of environmental conflicts we finally highlight the conceptual adjustments inspired from classical marxism and regulation theory that in our view are needed to deal more adequately with these issues

price unit value and quality demanded abstract given the paucity of quality price data it is common to rely on unit value average expenditure per unit as a proxy for price but this is an imperfect proxy if households respond to price increases by substituting to lower quality goods this paper draws on survey data that contain both unit value and price to estimate the severity of quality substitution in indonesia finding that it is prevalent the paper next calculates price elasticities that correct for quality substitution evaluating and ultimately rejecting a commonly used method for calculating price elasticities using only unit value data finally it demonstrates that quality substitution can result in biased price elasticities even when price is perfectly observed

distributive politics and economic growth a crude distinction between economics and politics would be that economics is concerned with expanding the pie while politics is about distributing it in this paper we analyze the relationship between the two we focus on how an economy s initial configuration of resources shapes the political struggle for income and wealth distribution and how that in turn affects long run growth our main conclusion is that inequality is conducive to the adoption of growth retarding policies we derive this result from a simple political economy model of growth and present cross country evidence consistent with it the key feature of our model is that individuals differ in their relative factor endowments we distinguish between two types of factors an accumulated factor called capital and a nonaccumulated factor called labor growth is driven by the expansion of the capital stock which is in turn determined by individual saving decisions long run growth is endogenous as the aggregate production function is taken to be linearly homogeneous in capital and productive government services taken together the provision of government services is financed by a tax on capital because government services are productive a small tax on

the revenge of homo economicus contested exchange and the revival of political economy recent developments in microeconomic theory have shown that the self interested behavior underlying neoclassical theory is artificially truncated it depicts a charmingly victorian but utopian world in which conflicts abound but a handshake is a handshake but a handshake is not always a handshake studies of principal agent analysis the economics of information radical political economy mechanism design and transactions cost economics have all focused on the difficulties involved in policing and enforcing the actual process of market exchange abandoning the victorian world of neoclassical theory will redirect economists to an older conception of their profession what once was called political economy by taking optimizing more seriously post walrasian economics has inspired a revolution in economic thought fostering both new theoretical departures and alternative conceptions of the capitalist economy we will offer our own interpretation of this literature focusing on the widely recognized fact that the terms arising from exchange are not generally enforceable at zero cost to the exchanging parties where some aspect of the good or service supplied is both valuable to the buyer and costly to provide the absence of third party enforcement of claims gives rise to endogenous enforcement strategies we refer to this relationship as a contested exchange because unlike the transactions of walrasian economics the benefit the parties derive from the transaction depends on their own capacities to enforce competing claims

food price increases and net food importing countries lessons from the recent past recent increases in food and other commodity prices have highlighted concerns that many poor countries are net food importers and higher food prices would worsen their trade balances in this article we analyze the changes in food trade balances associated with the 32 increase in food prices from 2000 2001 to 2004 2005 we find a small deterioration in food trade balances of low income countries and an improvement in middle income countries the deterioration is most severe for countries in conflict and small island states so attention should be placed first on these countries and on a few very low income countries that are also vulnerable because low income countries as a group had much lower agricultural gdp growth rates than middle income countries the answers to food vulnerability in low income countries should probably be addressed within the context of incentives for agricultural production

a note on keynesian unemployment as a worker discipline device abstract keynesian sales constraints are introduced into a model with endogeneous wages and involuntary equilibrium umemployment the result is a lower real wage and a higher unemployment rate

political economy of mechanisms we study the optimal mirrlees taxation problem in a dynamic economy in contrast to the standard approach where the taxation mechanism is operated by a benevolent planner with full commitment power we focus on economies in which policy decisions are made by self interested politicians who cannot commit to policies the society controls politicians using elections we show that the provision of incentives to politicians can be partly separated from redistribution across agents and that political economy constraints can be modeled as introducing additional aggregate distortions in the dynamic mirrlees problem we provide conditions under which the political economy distortions persist or disappear in the long run if the politicians are as patient as the agents the best sustainable mechanism leads to an asymptotic allocation where the aggregate distortions arising from political economy disappear in contrast when politicians are less patient than the citizens positive aggregate labor and capital taxes remain even asymptotically we conclude by providing a brief comparison of centralized

the worker discipline effect a disaggregative analysis the authors test for the presence of a worker discipline effect wherein macroeconomic conditions influence worker effort and examine interindustry variation in its strength an employment function analysis is first used to find evidence of a worker discipline effect in the majority of u s three digit manufacturing industries a factor analysis of industry firm and labor market characteristics is then used to identify several underlying factors by which industries can be distinguished the authors find that the strength of the worker discipline effect is positively and significantly correlated with the degree to which industries have secondary characteristics copyright 1990 by mit press

testing dynamic models of worker effort this article derives three dynamic models of worker effort determination based on a shirking efficiency wage model a compensating differentials model and a union firm bargaining model it shows that all of these three models have the same long run comparative statics but differ in their short run dynamics we use these different predictions about the dynamics as a basis for testing the models euler equations for each model are estimated using panel data on 486 u k companies the evidence supports the shirking model in firms with low levels of unionization but the bargaining model in highly unionized industries

commodity price shocks and child outcomes the 1990 cocoa crisis in cote d ivoire abstract we look at the drastic cut of the administered cocoa producer price in 1990 cote d ivoire and study to which extent cocoa producers children suffered from this severe aggregate shock in terms of school enrollment labor height stature and morbidity using precrisis 1985 88 and postcrisis 1993 data we propose a difference in difference strategy to identify the causal effect of the cocoa shock on child outcomes whereby we compare children of cocoa producing households and children of other farmers living in the same district or the same village this causal effect is shown to be rather strong for the four child outcomes we examine hence human capital investments are definitely procyclical in this context we also provide evidence of gender bias against young girls with respect to education and health care we finally argue that the difference in difference variations can be interpreted as private income effects likely to derive from tight liquidity constraints

radical political economy and the economics of labor markets this essay is the result of a long process involving many drafts and revisions i am grateful to duncan foley for the careful and constructive criticisms offered throughout the project the following people read the manuscript at different stages and although they often disagreed with me they generously provided helpful comments two anonymous referees for this journal samuel bowles william dickens greg dow robert drago richard edwards kathleen engel richard freeman james galbraith herbert gintis jody hoffer gittel sandfordjacoby tom kochan david levine lisa lynch paul osterman michael piore bob rebitzer gil skilman dan slesnick robert thomas and tsuyoshi tsuru comments from participants in seminars at the massachusetts institute of technology university of massachusetts at amherst and hitotsubashi university are also gratefully acknowledged