wheat from chaff meta analysis as quantitative literature review abstract this paper presents and develops a quantitative method of literature reviewing and evaluating empirical research meta regression analysis or mra economics is theory driven yet we must learn empirically if economics is to advance mra offers a more objective statistical method to summarize our empirical knowledge and to explain the wide study to study variation in economic research mra is used to assess the evidence for ricardian equivalence and its findings are contrasted to those of conventional narrative review furthermore mra establishes a platform from which to distinguish genuine empirical effect from the exploitable specification error that infests applied econometrics

economic determinants of free trade agreements abstract the purpose of this study is to provide the first systematic empirical analysis of the economic determinants of the formation of free trade agreements ftas and of the likelihood of ftas between pairs of countries using a qualitative choice model we develop this econometric model based upon a general equilibrium model of world trade with two factors of production two monopolistically competitive product markets and explicit intercontinental and intracontinental transportation costs among multiple countries on multiple continents the empirical model correctly predicts based solely upon economic characteristics 85 of the 286 ftas existing in 1996 among 1431 pairs of countries and 97 of the remaining 1145 pairs with no ftas

what determines bits abstract similar to bilateral or regional preferential trade agreements ptas bilateral investment treaties bits have proliferated over the past 50 years the purpose of this study is to provide the first systematic empirical analysis of the economic determinants of bits and of the likelihood of bits between pairs of countries using a qualitative choice model in a manner consistent with explaining ptas we develop the econometric specification for explaining the two based upon a general equilibrium model of world trade and foreign direct investment with three factors two products and trade and investment costs among multiple countries in the presence of national and multinational firms the empirical model for bits and ptas is bivariate in nature and supports a set of hypotheses drawn from the general equilibrium model using the preferred empirical model for a sample of 12 880 country pairs in the year 2000 we predict correctly 88 of all pairs with a bit and a pta 81 with a bit but no pta and 84 with a pta but no bit

intersectoral transfer growth and inequality in rural ecuador abstract in this paper we study intersectoral transfer and its impact on the distribution of income in ecuador we find that income shares between farm and nonfarm activities are roughly equal on average although the rich in rural areas typically receive a greater share of income from nonfarm sources thus decomposing inequality by income source reveals that a rise in nonfarm incomes increases inequality drawing on a new method to estimate local level distributional outcomes growth of the high productivity nonfarm sector is observed to have a strong and positive association with average consumption and inequality growth of the low productivity nonfarm sector is associated with little change in either average income or income inequality irrespective of subsector growth of the nonfarm sector is associated with a substantial fall in poverty

assets activities and income generation in rural mexico factoring in social and public capital in recent years there has been increasing emphasis in the rural development literature on the multiple income generating activities undertaken by rural households and the importance of assets in determining the capacity to undertake these activities controlling for the endogeneity of activity choice and applying lee s generalisation of amemiya s two step estimator to a simultaneous equation model household returns to assets from multiple activities are explored for the mexico ejido sector to incorporate the multiple variables representing social and public capital into the analysis factor analysis is used the results indicate that the asset position of the household has a significant effect on household participation in income generating activities and returns to those activities furthermore the inclusion of measures of social and public capital into the analysis show that these assets play an important role in income generating activities and that the influence is dependent on the type of social and public capital as well as the particular activity

non agricultural earnings in peri urban areas of tanzania evidence from household survey data abstract this study draws on purposive survey data of approximately 600 households in peri urban tanzania to describe the degree and nature of non farm diversification in these settings with the exception of relatively dynamic cities such as dar es salaam and arusha overall non farm incomes shares are not unambiguously higher than in rural areas as a whole non farm income shares rise sharply and monotonically with quintiles defined in terms of per capita food consumption in that sense the sector appears to offer an important route out of poverty the evidence suggests that education and access to infrastructure are important determinants of non farm incomes in peri urban areas women appear to be poorly placed vis a vis the non farm sector even after controlling for education age and other characteristics kinship and tribal affinities and time devoted to communal activities appear to deter entrepreneurial activity and non farm employment but trust in officials and public servants and strong heterogeneous village associations are important in stimulating non farm activity

estimating the effects of free trade agreements on international trade flows using matching econometrics abstract this paper provides the first cross section estimates of long run treatment effects of free trade agreements on members bilateral international trade flows using nonparametric matching econometrics our nonparametric cross section estimates of ex post long run treatment effects are much more stable across years and have more economically plausible values than corresponding ols cross section estimates from typical gravity equations we provide plausible estimates of the long run effects of membership in the original european economic community eec and the central american common market cacm between 1960 and 2000 and the estimates confirm anecdotal reports of these agreements effectiveness

a cross country comparison of rural income generating activities summary this paper uses a newly constructed cross country database composed of comparable income aggregates to examine the full range of income generating activities carried out by rural households the analysis paints a clear picture of multiple activities across rural space in countries on all four continents though less so in the included african countries for most countries the largest share of income stems from off farm activities and the largest share of households has diversified sources of income diversification not specialization is the norm nevertheless agricultural sources of income remain critically important for rural livelihoods in all countries

on the relationship between the breadth of preferential trading arrangements and trade flows this paper uses matching econometrics to extend the literature investigating the impact of preferential trading arrangements ptas on goods trade flows heterogeneity in ptas is accounted for through a provision count index derived from data provided in a recent world bank study pta formation now involves two separate sequential decisions first whether two trading partners should form a pta and second if they do how broad that agreement should be we find our explanatory variables are significant for both decisions but often have opposing effects on each using matched pta and non pta groups of country pairs we estimate a dose response function which indicates that arrangements with few provisions and arrangements with many provisions do not appear to have a significant impact on goods trade flows between their members ptas in an intermediate range are shown to have a significant positive effect we then relate these outcomes to the actual content of the ptas using the concept of provision intensity

accumulation of assets in farms covered by the fadn farm accountancy system in poland the economic and eco efficiency context the primary objective of the article is to identify the accumulation processes in farms in poland based on the economic size as well as the context of eco efficiency from the perspective of environmental sustainable value in addition the importance of subsidies in generating accumulation was specified and the context of eco efficiency was taken into account analysis of the environmental context was carried out with the use of the assessment of subsidies for public goods and return to cost ratio rtc based on the concept of sustainable value sv cross analysis has shown that with the transition to groups of farms with an increasing economic size the situation was more favourable from the perspective of the accumulation rate and its level per 1 ha subsidies play a significant role in shaping accumulation it was observed that the higher rate of accumulation associated with the transition to groups of farms with greater economic strength is accompanied by an increase in eco efficiency through the prism of the rtc indicator larger but not the largest farms are more efficient in using the transformation of environmental inputs into production output which does not mean that they exert an absolutely lower environmental pressure

the returns from schooling in a diversified rural economy controlling for the endogeneity of activity choice and considering both household head and family schooling we findevid ence of high returns from schooling in both crop andnoncrop activities as schooling levels increase the returns from schooling shift away from crop production failure to control for activity selection andfamily schooling is likely to result in biasedestimates of the returns from schooling in individual activities copyright 2000 oxford university press

the problem of global environmental protection what distinguishes global common property problems and global unidirectional externalities from the ones that arise under a single jurisdiction is that there is no global authority empowered to intervene and regulate use of global environmental resources cooperation is needed the paper discusses when cooperation is most needed and how it might be obtained cooperation might emerge from a noncooperative setting if supergames are played if the actions of any one country are explicitly contingent on the actions undertaken by other countries or if moral concerns lead countries to consider the consequences of their actions for others cooperation emerges in an explicit though limited form when countries commit to regulate themselves in signing international agreements in these cases the signatories cooperate but the agreements are self enforcing an attempt is made to relate these theoretical concepts to the practice of global environmental protection copyright 1990 by oxford university press

rural livelihood diversification in sub saharan africa a literature review abstractthis article provides a comprehensive review of the literature on the nature and evolution of rural livelihood diversification in sub saharan africa and the situation regarding smallholders it reveals mixed findings about the causes and consequences of livelihood diversification on rural smallholders adopting this strategy a lot of evidence from the literature suggests that it is relatively better off smallholders with sufficient assets who achieve successful livelihood diversification mainly by exploiting opportunities and synergies between farm and nonfarm activities because of asset constraints increase in incomes and wealth based on livelihood diversification has not yet benefitted the large majority of smallholders

food insecurity gender and international migration in low and middle income countries abstract the determinants of migration have been widely studied but research has rarely addressed the roles of food insecurity and gender in the migration decision process to address these gaps we examine these relationships for 135 078 individuals across 94 low and middle income countries we use a series of binary choice models with sample selection and data from the 2014 2015 waves of the gallup world poll survey which includes the first global measure of individual level food insecurity results which are robust indicate that food insecurity is an important determinant of both migration intentions and preparations and the probability of migration intentions increase monotonically with the severity of food insecurity and the probability of migration preparations decrease these relationships also differ significantly by gender and level of gross national income evidence suggests a need for increased coordination between the international food security and migration policy agendas

the determinants of nonfarm activities and incomes of rural households in mexico with emphasis on education abstract this paper presents the main results of a study of the effects of education as well as other household assets on the choice of activities and incomes of rural mexican households our study examines the various income sources as well as the education of the household s head and its members implications are drawn for rural education and development policies to promote rural nonfarm incomes and employment

rural nonfarm incomes in nicaragua abstract this paper examines nonfarm incomes of rural nicaraguan households using a nationwide survey lsms from 1998 the key findings are as follows a rural nonfarm income rnfi constitutes 41 of rural household incomes b rnfi is much more important than farm wage labor income c rnfi tends to be relatively concentrated geographically and socioeconomically toward the rural areas of the managua zone and the rest of pacific zone which are denser in infrastructure and population and toward the upper income quartile of rural households this concentration implies high entry barriers and capital requirements for rural nonfarm activity that the poor are simply not equipped to overcome equipping the rural poor through training and acquisition of diverse forms of capital to have a chance at the higher return nonfarm jobs would be a major step toward helping them to share the benefits of the rural nonfarm economy d self employment small enterprise income in manufactures is very minor probably due to the ease of obtaining manufactured goods from urban industries and imports wage employment constitutes the bulk of rnfi despite it receiving little attention in development programs and debate e three quarters of rnfi is in the service sector and only one quarter is from manufactures that can be contrasted with the emphasis on small manufactures enterprises in rural development programs and research f education road access as well as access to electricity and water were found to be important to nonfarm incomes

a review of hunger indices and methods to monitor country commitment to fighting hunger several indices measuring hunger and progress in achieving hunger eradication have been proposed in the literature this paper reviews existing hunger indices and critically assesses their quality against a number of desirable properties hunger indices are found to be unsatisfactory in a number of ways they ignore distributional issues they neglect the occurrence of food and health shocks and are sometimes based on unreliable data anthropometric measurements stunting in particular emerge as powerful indicators of hunger and are ideal for addressing a number of policy relevant issues the paper also introduces a conceptual framework for an index measuring country commitment to fighting hunger the constitutive elements of this index are illustrated political will anti hunger policies and programmes suggestions are made on how a commitment index can be built and what are the data requirements

the food stamp program and food insufficiency food stamp participants have higher food insufficiency rates than eligible nonparticipants even after controlling for other factors given the food stamp program s prominent role in the alleviation of hunger this is a counterintuitive result we conjecture that these higher rates are due to adverse selection insofar as households more likely to be food insufficient are also more likely to receive food stamps we establish a theoretical framework to address this adverse selection using a simultaneous equation model with two probits we show that once one controls for this adverse selection food stamp recipients have the same probability of food insufficiency as nonrecipients copyright 2001 oxford university press

nonfarm employment and poverty alleviation of rural farm households in honduras abstract this paper analyzes the role of nonfarm income of rural farm households in honduras it uses the national income and expenditure survey from 1993 to 1994 income from nonfarm wage and self employment represents 16 25 of farm household income and is especially important for middle and higher income strata nonfarm wage labor is geographically concentrated in small rural towns and in the industrial free zones located in the northern region while self employment is particularly developed in the southern region access to nonfarm wage employment is confined to educated individuals that belong to large households while female members of wealthier households are mainly involved in self employment food security is strongly enhanced through the engagement in nonfarm activities moreover nonfarm income enables farmers to purchase external inputs for improving yields and labor productivity suitable policies to enhance nonfarm employment include education training and technical assistance to reduce labor intensity in agricultural production as well as public investment and credit services to improve access to nonfarm activities

land inheritance and market transactions in uganda studies on the role of nonmarket land transactions remain limited this paper addresses two questions is land inheritance driven by underdeveloped land markets how does land inheritance influence land disposal and acquisition we use a switching regression model on household data from rural uganda we find that the initially landless or near landless households due to little or no land inheritance obtain land through land markets while those that are land rich dispose of land through land sales and bequests the results suggest that a process of land equalization is unfolding within the sample

assessing food insecurity in latin america and the caribbean using fao s food insecurity experience scale abstract the complexity of the operational concept and definition of food insecurity has complicated the study of the food insecure and efforts to determine clear policy directions previous findings on the prevalence and severity of food insecurity are inconsistent and often depend on the measure used to overcome limitations in food security measurement the food and agriculture organization of the united nations developed the food insecurity experience scale which is the first survey protocol to measure people s direct experience of food insecurity on a global scale using this new measure our study contributes to the understanding of the food insecure by examining the determinants of food insecurity within and across countries in latin america and the caribbean lac using a series of multilevel linear models we find the three determinants associated with the largest increase in the likelihood of experiencing food insecurity in lac are low levels of education limited social capital and living in a country with low gdp per capita results suggest the need to promote education of the most vulnerable encourage social interactions that help build individuals social capital and adopt gender sensitive programs the results also suggest the need for a shift in policy from short term strategies to long term efforts that sustain household productive capacity and employment to promote sustained economic growth

nonfarm income inequality and land in rural egypt this article proposes to clarify the impact of nonfarm income and unequal land distribution on rural income inequality by analyzing the results of a new nationally representative household survey in egypt the article seeks to make three contributions first it uses standard decomposition techniques based on the gini coefficient to pinpoint the contribution of five different sources of rural income including nonfarm income to overall rural inequality this is useful because of few past studies have used disaggregated household level income data to analyze the contribution of nonfarm income to overall rural inequality second the analysis applies a new income decomposition procedure based on regression analysis this procedure proposed by j morduch and t sicular provides a flexible and efficient way for quantifying the role of various household level variables in determining the level of income inequality third the study uses the new income decomposition procedure to identify the contribution of one specific variable land ownership to various sources of income inequality this analysis finds that land ownership which is distributed very unevenly in rural egypt is negatively and significantly related to the determination of nonfarm income however land ownership is positively and significantly related to the determination of agricultural income excerpt

are weak patent rights a barrier to u s exports abstract this paper assesses whether how and to what extent u s exports are sensitive to national differences in patent rights i estimate bilateral trade equations that account for trade distortions related to patent rights using data on state to country manufacturing exports in 1992 i find that weak patent rights are a barrier to u s exports but only to countries that pose a strong threat of imitation e g china the stronger patent rights required under the wto agreement increase u s exports to these high threat markets alternatively strengthening patent rights in countries that pose a weak threat of imitation reinforces monopoly power and reduces u s exports to these markets

the gender gap in agricultural productivity the role of market imperfections abstractthis paper hypothesises that labour and credit market imperfections by discouraging off farm income generating activities and restricting access to inputs respectively affect female farm productivity more deeply than male productivity the paper develops a theoretical model which decomposes the contribution of various market imperfections to the gender productivity gap empirically we show that agricultural labour productivity is on average 44 per cent lower on female headed plots than on those managed by male heads 34 per cent of this gap is explained by differences in labour market access and 29 per cent by differences in credit access

women s empowerment in agriculture what role for food security in bangladesh summary using a nationally representative survey from bangladesh we examine the relationship between women s empowerment in agriculture measured using the women s empowerment in agriculture index and per capita calorie availability dietary diversity and adult body mass index bmi accounting for potential endogeneity of empowerment we find that increases in women s empowerment are positively associated with calorie availability and dietary diversity at the household level overall household wealth education and occupation are more important than women s empowerment as determinants of adult nutritional status although negative impacts of group membership and credit on male bmi suggest that intrahousehold trade offs may exist

what is middle class about the middle classes around the world we expect a lot from the middle classes jim frederick writing in time magazine in 2002 stated china s burgeoning middle class holds the key to the future of the country in a more academic vein easterly 2001 concludes based on a comparison of a large number of countries that countries that have a larger middle class tend to grow faster at least if they are not too ethnically diverse in another article birdsall graham and pettinato 2000 rue the shrinking of the middle class the backbone of both the market economy and of democracy in most advanced societies in the face of burgeoning globalization the economic historian david landes writing about the wealth and poverty of nations 1998 explains england s early ascendancy in terms of the great english middle class of the eighteenth and nineteenth centuries of course there is nothing new about this faith in the middle class it follows a long line of theorizing going back at least to max weber 1905 at least three distinct arguments are traditionally made in one new entrepreneurs armed with a capacity and a tolerance for delayed gratification emerge from the middle class and create employment and productivity growth for the rest of society for a formalization of this argument see acemoglu and zilibotti 1997 in a second perhaps more conventional view the middle class is primarily a source of vital inputs for the entrepreneurial class it is their middle class values their emphasis on the accumulation of human capital and savings that makes them central to the process of capitalist accumulation for example doepke and zilibotti 2005 2007 the third view a staple of the business press emphasizes the middle class consumer the consumer who is willing to pay a little extra for quality in this view the middle class demand for quality consumer goods feeds investment in production and marketing which in turn raises income levels for everyone murphy shleifer and vishny 1989 1 this essay asks what we should make of these arguments in the context of today s developing countries starting from data on patterns of consumption and investment by the middle class we look for what is distinct about the global middle class especially when compared to the global poor defined as those whose per capita daily consumption valued at purchasing power parity exchange rates is below 2 a day who were the subject of a previous essay in this journal banerjee and duflo 2007b in particular is there anything special about the way the middle class spend their money earn their incomes or bring up their children

rural nonfarm employment and incomes in chile abstract this article analyzes the evolution of rural nonfarm employment rnfe and income in chile during 1990 96 the data used come from the national socioeconomic survey casen and from a household survey undertaken by the authors in two municipalities in 1999 the latter contrasted two zones very different in terms of economic dynamism and rural poverty we show that during the period rnfe and incomes increased 10 and 18 respectively in 1996 reaching 39 of rural employment and 41 of rural incomes the rate of multiactivity the share of households participating in more than one sector was only 20 lower than expected indicating a tendency toward economic specialization in rural income strategies the determinants of such employment are mainly household characteristics in particular variables related to human capital such as the age and gender of the household head and the schooling of the household members although also important are access to credit and physical capital the level of nonfarm income of rural households is determined mainly by the economic context in particular the economic level and dynamism of the overall zone and the quality of the roads it is proposed that policies to develop rnfe should be geared to zone characteristics and should in general favor investments in education in roads and in access to credit moreover households headed by women should be the object of special attention to promote such policies it will be necessary to address important gaps and weaknesses in the public institutional structure

international pollution problems unilateral initiatives by environmental groups in one country abstract international pollution involving two groups of countries is modelled as a two player game each country is characterized by specific preferences for consumption goods and the environment both countries produce a single consumption good with a given technology that determines pollution per unit output each country is economically isolated except for the presence of a global pollutant within a static framework m hoel j environ econom management 20 55 70 1991 shows that unilateral actions to reduce harmful emissions advocated by environmental groups in one country may result in higher total emissions i characterize cooperative and noncooperative emission strategies for the two countries using welfare functions that within a static framework yield total emissions without cooperation always higher than those with cooperation when both governments choose linear closed loop strategies and one country is not sensitive to the environmental condition the unique equilibrium exhibits less pollution than the cooperative equilibrium only if the other country cares a great deal about the well being of future generations and has relatively low bargaining power in the negotiations equilibria that result from nonlinear closed loop strategies are also characterized

rural nonfarm activities and poverty in the brazilian northeast abstract this paper combines two complementary data sets to present a disaggregated spatial profile of poverty in the brazilian northeast and to investigate the importance of nonagricultural activities for its rural dwellers we present both univariate and multivariate profiles of nonagricultural employment and discuss its determinants while the main occupational difference between the rural poor and the rural nonpoor in brazil seems to be the greater reliance of the former on paid agricultural employment vis a vis own cultivation rather than access to nonagricultural activities the evidence nevertheless suggests that diversification into this growing sector provides both an important complement to the budgets of the poor and possibly a self insurance mechanism against negative shocks despite the substantial heterogeneity of the sector two general findings are robust returns to education are comparatively high and location in relation to urban areas is an important determinant of both employment and earnings in rural nonagricultural activities

coalitions in transboundary pollution reduction during emission reductions countries render services to each other by reducing transboundary pollution which should be recognized as an additional source of benefit since transboundary pollution fluxes are often significant the underestimation of this factor can substantially affect the choice of emission reduction strategies and eventually restrain pollution reduction this factor is a specific feature of the transboundary pollution problem that in the taxonomy of m iler 1990 relates to the case of regional reciprocal externalities cooperation in the case of regional reciprocal externalities has been often studied explicitly or implicitly in terms of cooperative games with transferable utilities tu one reason for this is that within this approach side payments are allowed which theoretically give higher gains to participants as compared to the approach with non transferable utilities ntu another reason is that the theory of ntu games is not yet sufficiently developed as compared with the theory of tu games but the standard tu approach to regional environmental regulation shows significant drawbacks discussing the analyses of the canadian american agreement on the columbia river by krutilla 1966 1968 and of the mexican american agreement on the colorado river by kneese 1988 m iler 1990 points out that the countries do not use side payments in the explicit form moreover the amounts of implicit side payments seem to be in contradiction with the criteria of economic benefits producing an impression of irrationality of the countries choices mner 1990 in this paper the tu approach is abandoned in favour of the ntu approach to treat the case of regional reciprocal externalities from the viewpoint of the ntu game an irrational behaviour of a participant occurs when his preferences involve hidden goals while his implicit side payments favourably affect the other participants expected choices of strategies with respect to these hidden goals the ntu approach becomes immune to irrational behaviour if it allows consideration of the participants utilities reflecting their respective hidden goals through the above mechanism of transposed preferences non transferability of utilities generally means incommensurability of

international environmental problems a simple taxonomy of international environmental problems is developed based on economic considerations the unidirectional externalities are illustrated by the case of one upstream and one downstream country the main problem in this case is an informational one the analysis of regional reciprocal externalities is illustrated by the acid rains in europe it is shown that an efficient solution could be achieved by transferable export rights finally global external problems are discussed with reference to greenhouse effects and extinction of species copyright 1990 by oxford university press

are workers close to cities paid higher nonagricultural wages in rural china in the present study we investigate whether workers close to cities are paid higher non agricultural wages than workers in outlying rural areas we find that workers close to urban areas not only benefit from more opportunities to engage in non agricultural activities but also from better paid jobs in addition distance exhibits a strongly nonlinear impact distance always has a negative impact on wages but the effect is more detrimental the closer the village is to the urban center we also find evidence of urban hierarchy effects workers living close to bigger cities are paid higher wages finally we provide evidence on the transmission channels at work

do agricultural outputs of partly autarkic peasants affect their health and nutrition evidence from rwanda abstract in rural areas of less developed countries because of market imperfections the health and nutritional status of peasants may directly depend on the production levels of specific agricultural goods rather than solely on income levels this channel of health and nutrition determination has never been studied in order to assess and test the empirical possibility of this channel we estimate the responses of health and nutritional status of autarkic agricultural households in rwanda with respect to differences in socio demographic characteristics and the main agricultural outputs and inputs while controlling for local environment and sampling scheme several food outputs are found to have a positive influence on health and nutrition whereas the production of traditional beers has a negative impact moreover greater land negatively affects health and nutrition conditionally on agricultural production perhaps because of a larger relative workload for households who have a large farm an alternative interpretation of the estimates is that they inform on the validity of the common hypothesis of perfect agricultural input output markets with no effect of agricultural inputs outputs on health and nutrition status this hypothesis is rejected

assets activities and rural income generation evidence from a multicountry analysis summary this paper examines the links between the assets and the economic activities of rural households in developing countries to provide insight into how the promotion of certain key assets particularly education land and infrastructure influences the economic choices of these households nationally representative data from 15 countries which form part of the rural income generating activities riga database are used in the analysis the results indicate that improved land access is linked to agricultural production and thus will lead households to take on average this path for improving household welfare higher levels of education and greater access to infrastructure appear to be most closely linked to non agricultural wage employment