toward the diffusion of rural energy technologies some lessons from the indian biogas program abstract india has committed substantial resources to construct several hundred thousand biogas plants this program is reviewed within the context of the current status of biogas systems including technical economic manpower and training and organizational issues experience with a dozen village scale systems is analyzed in detail problems with the indian biogas program show the importance of basing technology diffusion efforts on an intimate understanding of rural resource flows and the local political economy the biogas experience illustrates a broader problem in development an imbalance between technology focused and people focused development assistance some of the causes and implications of this imbalance are discussed and some suggestions are offered to help both developing countries and various donors increase the effectiveness of development efforts by stimulating the growth of local organizations

willingness of rural communities to adopt biogas systems in pakistan critical factors and policy implications abstract biogas is a methane rich gas that is produced by the anaerobic fermentation of organic material such as animal dung pakistan has the sixth largest livestock based economy in the world and thus demonstrates great potential for biogas production the government has already started the biogas support program bsp in a few selected areas of the country with that in mind this study was designed to determine a household s predicted willingness to adopt a biogas system in khyber pakhtunkhwa kp province the study is based on primary data collected from four districts peshawar nowshera charsadda and mardan data was collected from 200 livestock farming households selected through an equal allocation technique probit analysis was used to identify those factors influencing the willingness of a household to adopt a biogas system the results of the probit model reveal that the education level of the respondents total daily electric shortfall the effect of electric shortfall on childrens education and female drudgery and respondents awareness regarding the pros and cons of using biogas were statistically significant factors on the basis of p

post normal science in practice a q study of the potential for sustainable forestry in washington state usa abstract some ecological economists have advocated participatory decision methods in which people act as citizens rather than consumers as an epistemologically preferable alternative to a price based valuation approach for determining the disposition of ecosystems q method is a research technique advocated by proponents of discursive democracy to assess the self described attitudes of participants in discourse around a particular topic techniques that attempt to discern public values around ecological systems without imposing contrived e g only monetary or unintentionally biased frameworks can be seen as advancing ecological economics as a post normal science understanding the attitudes of groups involved in conflict over ecosystem use is crucial for designing policies that have a chance of being implemented as well as being equitable and sustainable thus the use of q method is an essential step for supporting successful public participation in decisions affecting ecosystem sustainability this paper reports the results of a q study designed to ascertain 1 the potential to find a common basis for cooperation among groups with a long history of conflict over forest management issues in the pacific northwest of the united states and 2 the extent to which current science pertaining to sustainable forest ecosystem management is commonly understood among these same actors participants were asked to rank 64 statements about forest management in the region including definitions of sustainable forestry on a scale of 4 strongly agree to 4 strongly disagree thirty people with a wide variety of backgrounds and experience with forest issues performed this q sort and then were interviewed to provide context for their answers the individual q sorts were correlated and factor analyzed to derive ideal discourse types three distinct discourses about sustainable forestry emerged from the factor analysis results indicate a strong desire across stakeholder groups to engage in participatory decision making with people from all sides of the issues there also appears to be a lack of consensus about the exact meaning of sustainable forestry and a lack of familiarity with scientific concepts of ecosystem resilience among some groups recommendations for additional ways in which q method can be applied by ecological economists as a practical means of advancing the field as a post normal science are described in the concluding section

wage mobility in the united states this paper examines the mobility of individuals through the wage and earnings distributions using 1979 1991 data from the national longitudinal survey of youth lifetime wages will be more equally distributed than wages from any single year if individuals change position in the wage distribution over time the results suggest that mobility is predominantly within group mobility reducing wage inequality by 12 26 over a four year horizon a detailed examination of within group mobility using year to year estimates of transition probabilities among quintiles of the distribution reveals similar general patterns across all skill groups mobility declined significantly over the years especially at the lower end of the wage and earnings distributions

institutional determinants of power sector reform in pakistan the electricity supply sector in pakistan has performed poorly in recent years reforms were introduced in the mid 1990s to improve the sector but progressed slowly with no significant impacts on pre reform performance this study uses new institutional economics as a theoretical basis to elucidate reasons for the failure of power sector reforms in pakistan to make improvements interviews with 23 experts using q methodology generated 215 statements that were used as a q concourse of these 51 statements were selected for the q sample and ranked by 34 respondents depending on their importance analysis revealed four important discourses on the determinants of power sector reform failure in pakistan these included weak governance structure country and sectoral endowments inefficient regulator and unspecified political institutions or unfriendly political contexts the study recommends establishment of institutions that support a market based power supply sector and improvements to the contractual arrangements between stakeholders to reduce opportunistic behaviour

seeking sustainability discourses with q methodology abstract this paper outlines the potential benefit of q methodology for the study of environmental issues within ecological economics based on research into lets local employment and trading systems in the united kingdom q methodology is a qualitative but statistical approach to enable the discovery of a variety of discourses concerning how individuals understand their behaviour and how they understand the social and environmental worlds in which they live q methodology thus has the capacity to allow a more effective form of policy making and implementation process the paper introduces some of the basic tenets of q methodology illustrates these with results drawn from the study mentioned above and concludes by indicating the potential this methodology holds for ecological economics research

alternative policies to subsidize rural household biogas digesters existing policies of household biogas projects focus mainly on supports on construction but less consider management and maintenance resulting in high scrap rate and waste of resources alternative policies must be explored to balance construction and operation taking the costs and benefits from a typical rural household biogas project this paper assesses the economic performance at three different subsidy levels i e no subsidy existing standard and positive externality based standard furthermore three subsidy alternatives one time annual and combined option are applied to the externality based standard the results show that household biogas digesters have unsatisfactory economic performance without any subsidy and even in current subsidy policies environmental benefits of the digester were estimated as 2732 chinese yuan significantly larger than existing subsidy standard to keep continuous work during the 20 year lifespans of digesters the income disparity of farmers among regions must be considered for policy application with the increasing of labor costs the ratio of initial subsidies must be reduced these results provide policy implications to the future development of biogas projects in terms of both their construction and follow up management reuse of the abandoned digesters as well as the exploitation of other emerging renewable energy projects

assessing demand when introducing a new fuel natural gas on java the indonesian government is investing in a gas transmission system on java for the evaluation of this investment a forecast of the demand for natural gas by the manufacturing sector is needed to obtain this forecast the manufacturing sector is divided into subsectors according to energy use in production processes on the level of production processes the opportunities for natural gas are based on net present value evaluations of its future benefits in production this results in the desired fuel mix for manufacturing subsectors from which the gas intensity ratios per subsector for existing production and new investments are calculated gas demand can then be forecast by combining the gas intensity ratios with subsectoral growth in gross value added this approach leads to a flexible forecasting tool that can readily account for changes in economic structure and energy prices as encountered by rapidly developing economies

market based biogas sector development in least developed countries the case of cambodia in many of the least developed countries the energy security conundrum is how to provide affordable safe and clean energy to a low income rural population household level generation of biogas from animal waste for both cooking and lighting while producing high quality organic fertiliser is increasingly proposed as a viable part of the solution for farming households since the early 1990s international development organisations often in cooperation with the national government have attempted to introduce biogas technologies in many least developed countries but most initiatives failed in this landscape of failed biogas development programmes the national biodigester programme nbp cambodia started in 2006 with the aim to establish a permanent market oriented and self financed biogas sector the results show the development of a sustainable domestic biodigester sector a rapid diffusion of biodigesters among poor rural households but still ambivalences on financial independency from external funding and carbon finance the conclusion is that a pure market model for biogas development in the rural area of the least developed countries will not easily work governmental regulation and coordination will remain needed and carbon finance will not easily fully replace oda and governmental financial support

developing effective policies for the sustainable development of ecological agriculture in china the case study of jinshan county with a systems dynamics model abstract this paper focuses on a search for concrete policy measures to facilitate the overall sustainability of ecological agricultural development at a county level for this purpose a system dynamics model aiseem has been developed to explore the potential long term ecological economic institutional and social interactions of ecological agricultural development through a case study of jinshan county in china the model provides an experimental platform for the simulation and analysis of alternative policy scenarios the results indicate that the diversification of land use patterns government low interest loans and government support for training are important policy measures for promoting the sustainable development of ecological agriculture at least in the case study context in addition the study reveals that environmentally sound technology e g biogas project alone cannot sufficiently induce farmers to adopt ecological agricultural practices limited availability of information risk aversion and high transaction costs are major barriers to the adoption of alternative agricultural practices in this regard the importance of capacity building and institutional arrangements are emphasised through the development of an improved policy making process on agricultural sustainability this case study highlights the importance of combining the ecological economics analytical framework with the system dynamics modelling approach as a feasible integrated tool to provide insight into the policy analysis of ecological agriculture and thus set a solid basis for effective policy making to facilitate its sustainable development on a regional scale

payments for pioneers revisiting the role of external rewards for sustainable innovation under heterogeneous motivations abstract acknowledging the diversity of preferences goals and motivations of individuals is key to promote the effectiveness of incentive based conservation interventions this paper analyses the heterogeneity of motivations to adopt silvopastoral practices a social ecological innovation for soil conservation and carbon emission reduction we use q methodology to identify smallholders views with regard to these practices in a community in the forest frontier in chiapas mexico the analysis uncovers three main perspectives self sufficient pioneers environmentally conscious followers and payment dependent conservatives we discuss these perspectives around three topics smallholders predisposition to adopt silvopastoral practices their views about needing external payments to sustain their livelihood and the diffusion of innovative sustainable practices we relate these perspectives with livelihood characteristics and with observed adoption levels under a pilot programme to promote silvopasture our findings suggest that incentives other than payments may be more appropriate for those more likely to adopt and that payments could encourage rent seeking strategies and not necessarily promote permanent behavioural change we suggest ways for designing more effective and adaptive environmental conservation programmes to foster adoption and continuation of social ecological innovations

how important is pro social behaviour in the delivery of public services a number of papers have suggested that pro social behaviour in the workplace may be sensitive to the institutional environment but there is little empirical research that attempts to test this directly using data on worker behaviour this is the aim of this paper we show that individuals in the non profit sector are significantly more likely to do unpaid overtime than those in the for profit sector however we find no evidence of adjustment along either the extensive or intensive margins when individuals change sectors the results of our analysis therefore point to selection and we find supporting evidence that individuals do self select on the basis of their propensity to donate labour

public private sector wage differentials in canada evidence from quantile regressions abstract quantile regressions are used to estimate the size of the public sector wage premium in canada we find that public sector rent payments tend to be highest for federal government employees females and individuals at the lower tail of the wage distribution

value based adaptation to climate change and divergent developmentalisms in turkish agriculture there is an increased recognition and attention on human values with respect to their role in shaping climate change adaptation policies furthermore as the recent literature suggests values held by policy actors are centrally located in the debates linking adaptation to development however different values tend to give way to diverging adaptation policy preferences which often appear as a dichotomy of adjustment incremental change versus transformation this study enquires the assumptions and values in adaptation policy by using q methodology and advances value based approach to adaptation policy with an empirical case from turkey a developing country with key vulnerabilities in its agricultural system by exploring the narratives of 29 policy actors who participated in the making of turkey s climate change adaptation strategy the analysis suggests that assumptions regarding an economic growth driven development agenda often shape adaptation concerns further analysis of the 4 emerging discourses productivism techno managerialism eco localism and authoritarianism suggests that while discourses agree that the ultimate goal of adaptation is safeguarding a developmentalist vision in agriculture they differ on the means and agents for reaching this goal i argue that this divergence can enhance the transformative potential of adaptation by bringing how for whom and why questions back to policymaking

frictional labour mobility we build a dynamic model of migration where in addition to standard relocation costs workers face spatial frictions that decrease their ability to compete for distant job opportunities we estimate the model on a matched employer employee panel dataset describing labour market transitions within and between the 100 largest french cities our identification strategy is based on the premise that frictions affect the frequency of job transitions while mobility costs impact the distribution of accepted wages we find that 1 controlling for spatial frictions reduces mobility cost estimates by one order of magnitude 2 the urban wage premium is driven by better opportunities for local job to job transitions in larger cities 3 migration reduces lifetime inequalities by providing insurance against unsatisfactory initial location draws 4 labour mobility policies based on relocation subsidies are inefficient unlike switching from nationwide to local minimum wages

optimal public sector wages i build a dynamic stochastic general equilibrium model with search and matching frictions to determine the optimal public sector wage policy public sector wages are crucial in achieving efficient allocation of jobs high wages induce too many unemployed to queue for public sector jobs in turn raising unemployment the optimal wage depends on the frictions in the two sectors following technology shocks public sector wages should be pro cyclical and deviations from the optimal policy significantly increase the volatility of unemployment

public sector wage policy and labor market equilibrium a structural model we develop and estimate a structural model that incorporates a sizable public sector in a labor market with search frictions the wage distribution and the employment rate in the public sector are taken as exogenous policy parameters overall wage distribution and employment rate are determined within the model taking into account the private sector s endogenous response to public sector employment policies job turnover is sector specific and transitions between sectors depend on the worker s decision to accept alternative employment in the same or different sector by comparing the value of employment in the current and prospective jobs the model is estimated on british data by a method of moments we use the model to simulate the impact of various counterfactual public sector wage and employment policies

what has 20 years of public private pay gap literature told us eastern european transitioning vs developed economies this paper surveys the literature on public private sector pay differentials based on 20 years of research in transitioning countries of eastern europe ee and compares the results with estimates obtained from developed market economies the majority of empirical studies from ee economies found evidence of public sector pay penalties during the period of economic transition from a communist to market based economy in developed economies however the average differential is usually around zero or positive the public sector pay inequality reducing effect relative to the private sector is greater in transitioning economies than in developed economies nevertheless there is evidence that the sign of the public sector pay gap as well as the relative public sector pay distribution change with the progress of economic transition towards those usually observed in developed economies different pay setting arrangements between private and public sectors and competition for workers seem to be major arguments for the existence of systematic pay differences between the two sectors

oecd organisational discourse peer reviews and sustainable development an ecological institutionalist perspective as part of the recent ideational turn in research on international organisations the study of organisational discourse has gained popularity yet ecological economics has thus far paid little attention to the role of organisations as sites for the discursive battles over the meaning of sustainable development for an international organisation without regulatory powers such as the oecd organisation for economic cooperation and development discourse is the main vehicle for policy influence but it also plays a key role in re defining the organisation s identity and authority the oecd s organisational discourse has been strongly dominated by modern mainstream economics and has given little room for marginalised discourses this paper compares from the perspective of institutionally oriented ecological economics ioee and borrowing from critical discourse analysis the experience from attempts to integrate the concept of sustainable development within two oecd peer review mechanisms the economic surveys and the environmental performance reviews the extent to which the respective conceptions of sustainable development in the two reviews are in line with the principles of ioee and the reasons for the apparent failure of sustainable development discourse to gain foothold within the organisation are analysed

the determinants of black white differences in early employment careers search layoffs quits and endogenous wage growth this paper studies the transition from school to full time employment and subsequent labor mobility during the first five postschooling years for several recent cohorts of black and white male terminal high school graduates using unique data from the 1979 youth cohort of the national longitudinal surveys of labor market experience a constrained optimization model of labor force dynamics is implemented empirically integrating features of models previously described in the literature the estimates of the model provide quantitative evidence on underlying structural differences in labor market constraints faced by blacks and whites for example while blacks have overall a substantially smaller wage return to work experience and face a less disperse wage offer distribution blacks face a higher probability of receiving job offers

on the dynamics of unemployment and wage distributions postel vinay and robin s 2002 sequential auction model is extended to allow for aggregate productivity shocks workers exhibit permanent differences in ability while firms are identical negative aggregate productivity shocks induce job destruction by driving the surplus of matches with low ability workers to negative values endogenous job destruction coupled with worker heterogeneity thus provides a mechanism for amplifying productivity shocks that offers an original solution to the unemployment volatility puzzle shimer 2005 moreover positive or negative shocks may lead employers and employees to renegotiate low wages up and high wages down when agents individual surpluses become negative the model delivers rich business cycle dynamics of wage distributions and explains why both low wages and high wages are more procyclical than wages in the middle of the distribution

estimating a structural search model the transition from school to work this paper presents a finite horizon search model that is econometrically implemented using all of the restrictions impli ed by the theory following a sample of male high school graduates fr om the youth cohort of the national longitudinal surveys from graduat ion to employment search parameters are estimated reservation wages and offer probabilities are estimated to be quite low simulations a re performed of the impact of changing the parameters on the expected duration of unemployment copyright 1987 by the econometric society

search and nonwage job characteristics this paper quantifies the importance of nonwage job characteristics to workers by estimating a structural on the job search model the model generalizes the standard search framework by allowing workers to search for jobs based on both wages and job specific nonwage utility flows within the structure of the search model data on accepted wages and wage changes at job transitions identify the importance of nonwage utility through revealed preference the estimates reveal that utility from nonwage job characteristics plays an important role in determining job mobility the value of jobs to workers and the gains from job search

inequality income growth and mobility the basic facts during the 1950s and 1960s mean wages in the united states grew rapidly and the dispersion around this growing mean changed very litde starting in the 1970s and continuing into the 1980s and 1990s these patterns were reversed mean wages grew slowly and inequality increased rapidly these changes in labor markets were reflected in changes in the distribution of family income the mean of the distribution of family income did increase after 1973 in spite of the near constancy of mean real wages as family members increased the number of hours they worked however the increase in inequality of wages was mirrored by an increase in the dispersion of family income a large descriptive literature has documented the rise in inequality while a smaller behavioral literature has sought to delineate the causes of this rise these changes in the distribution of family income a fected rates of poverty directly during the 1950s and 1960s temporary increases in poverty during recessions were more than offset by declines in poverty during economic expansions as long as the poor gained along with everyone else fi om the secular growth in the mean one could be confident that poverty rates would ratchet down this is exactly what happened as poverty rates fell from 22 4 percent in 1959 to 11 1 percent in 1973

review of barriers to the dissemination of decentralized renewable energy systems abstract this paper reviews the available literature dealing with the barriers to the dissemination of decentralized renewable energy systems decentralized renewable energy systems may face a range of technical economic institutional socio cultural and environmental barrier to their dissemination in the paper barriers impeding the dissemination of decentralized renewable energy systems have been identified and assessed in addition appropriate remedial measures and corresponding responsibility centers as reported in the literature have also been discussed inappropriateness of technology unavailability of skilled manpower for maintenance unavailability of spare parts high cost lack of access to credit poor purchasing power and other spending priorities unfair energy pricing lack of information or awareness and lack of adequate training on operation and maintenance of decentralized renewable energy systems are found to be the most critical barriers long term conducive policies appropriate regulatory framework financial incentives capital subsidies and soft loans to users technology and skill development internalization of externalities in the cost of energy withdrawal of subsidies presently being given to fossil fuels development of specialized institutions cooperation with international agencies participation of local community and awareness generation have been recommended for increased dissemination of decentralized renewable energy systems

the public pay gap in britain small differences that don t matter the existing literature on inequality between private and public sectors focuses on cross section differences in earnings levels forward looking agents however care about income and job mobility too which we show are substantially different between the two sectors using data from the bhps we estimate a model of income and employment dynamics allowing for unobserved heterogeneity in the propensity to be employed in eitherjob sector we detect a positive average public premium both in income flows and in the present discounted sum of future income flows we also find that income inequality is lower but more persistent in the public sector there is an ongoing debate as to whether public sector workers experience better or worse pay conditions than their private counterparts a recurring message in the recent literature is that although raw differences can be large most are likely to reflect differences in the composition of the workforce both in terms of observed characteristics such as age and education and in terms of unobserved characteristics nevertheless a look at labour markets in the two sectors suggests that individuals do perceive some differences between the sectors katz and krueger 1991 document the fact that blue collar workers are willing to queue to obtain public sector jobs whereas highlyskilled workers are notoriously hard to recruit and retain in the public sector the focus of most of the literature on public pay gaps is on cross section differences in earnings levels 2 yet the public private differences are arguably equally marked in terms of income mobility income volatility and job loss risk than in terms of mean income levels public sector employers are widely perceived to offer more job security 3 there is also plentiful evidence of relative wage compression in the public sector moreover as we shall point out public sector incomes are substantially more persistent over time than private sector incomes the motivating point of this article is that forward looking agents are likely to care about income and job mobility as well as income levels so that a more general assessment of the existence and magnitude of a public premium should be based on

discursive ethics in ecosystems valuation and environmental policy abstract discursive ethics has its origin in the frankfurt school of critical theory as an applied ethic it is also associated with practical philosophy in this paper discursive ethics is discussed as a conceptual and practical framework for ecosystems valuation and environmental policy the discussion focuses on three main strengths of discursive ethics 1 it offers an integrated process for ecosystems valuation 2 it offers a decision making framework for responding to uncertainty and risk and the reality of action in indeterminacy 3 it offers a process for deconstructing common valuation concepts and identifying conditions for their critical reconstruction the theoretical discussion is followed by a case study example which illustrates the usefulness of discursive ethics in identifying valuation biases hidden behind disciplinary assumptions and conceptual norms these include cultural norms of rationality information biases which consider hard facts over soft values and disciplinary valuation biases which distinguish between hard and soft expert contributions as the case study illustrates a successful application of discursive ethics in ecosystems valuation and environmental policy demands sensitivity to such underlying biases beyond its policy relevance discursive ethics may also offer a framework for an extended peer discourse through which new foci in research and education can be identified

the non economics of the nuclear fuel cycle an historical and discourse analysis abstract the development of commercial nuclear power seems irrational while the nature of the nuclear fuel cycle has been well known since the early days of nuclear power the problem of disposing of nuclear waste has only recently become a central area of concern and research also commercial nuclear power has probably never been truly economically competitive as it has received large subsidies it is argued that the rise of nuclear power can be understood through the use of discourse analysis where the discourse of the modernising and interventionist state is well matched to the discourse of nuclear power as offering control and modernity

on the positive correlation between income inequality and unemployment abstract two papers published in this journal jantti 1994 and mocan 1999 among others find empirical evidence that increases in structural unemployment have a substantial aggravating impact on income inequality the main point of this work is to show that standard job search models can help us understand this empirical regularity as a byproduct of the analysis the paper also provides a closed form general expression that enables direct calculation of the gini coefficient of wage income inequality as a function of any arbitrary initial distribution of wage offers three numerical examples illustrate the results

extended exergy based sustainability accounting of a household biogas project in rural china biogas has been earmarked as one of the leading renewable energy sources capable of mitigating environmental emissions in rural areas thus developing an accounting technique is of particular importance in coping with increasing problems related to renewable agriculture and rural energy supply in this study extended exergy was generalised for the sustainability evaluation of biogas projects furthermore a series of extended exergy based indicators was presented as benchmarking from the perspectives of resources economics and greenhouse gas ghg emissions the sustainability of a three in one biogas production system in southern china was thereby evaluated based on the proposed framework the results show that economic costs concentrate in the construction phase ghg emissions are mainly derived from bricks and cement with proportions of 36 23 and 34 91 respectively the largest resource depletion occurs during the consumption of feedstock 87 06 in the operation phase compared with other renewable energy conversion systems the biogas project has a higher renewability 0 925 and economic return on investment ratio 6 82 and a lower ghg emission intensity 0 012 with the merit of bridging thermodynamics and externality the extended exergy based approach presented in this study may effectively appraise the energy and environmental performance of biogas projects

positive externalities of domestic biogas initiatives implications for financing domestic biogas programs are often justified on the basis of the private benefits and costs accruing to the individual households in terms of providing a superior cooking fuel improved indoor air quality and saving of time spent on collecting firewood this paper contends however that the economic surpluses from domestic biogas programs are realized beyond such narrowly defined project boundaries the paper maintains that economic value addition from the consumptive use of the biogas for cooking and the non consumptive and indirect value derived from the biogas plant providing feedstock for other processes and other such benefits as greenhouse gas mitigation positive externalities need to be accounted for the process approach adopted by this paper would enable an integrated view of the value chain and consequently a mechanism to reallocate costs and to distribute such surpluses

linking material and energy flow analyses and social theory the paper explores the potential of habermas theory of communicative action to alter the social reflexivity of material and energy flow analysis with his social macro theory habermas has provided an alternative critical justification for social theory that can be distinguished from economic libertarianism and from political liberalism implicitly most flow approaches draw from these theoretical traditions rather than from discourse theory there are several types of material and energy flow analyses while these concepts basically share a system theoretical view they lack a specific interdisciplinary perspective that ties the fundamental insight of flows to disciplinary scientific development instead of simply expanding micro models to the social macro dimension social theory suggests infusing the very notion of flows to the progress of disciplines with regard to the functional integration of society material and energy flow analyses can rely on the paradigm of ecological economics and at the same time progress the debate between strong and weak sustainability within the paradigm however placing economics at the centre of their functional analyses may still ignore the broader social integration of society depending on their pre analytic outline of research and the methods used

a reexamination of the federal private wage differential in the united states the federal private wage differential is reexamined with recent data using specifications similar to those used in three previous studies i find that the federal private wage differential has narrowed since the 1974 79 period analyzed in those studies in addition i discover that wage differentials based on specifications used in the literature are biased upward because the previous studies did not control for detailed occupational and locational characteristics of workers corrected point estimates of the wage gap are much smaller than previous estimates in the literature differences in the gap across demographic groups occupations and locations are also discussed

twenty years of rising inequality in u s lifetime labour income values in this paper we study the evolution of lifetime labour income inequality by constructing present value life cycle measures that incorporate both earnings and employment risk we find that even though lifetime income inequality is 40 less than earnings inequality the total increase in lifetime income inequality over the past 20 years is the same as earnings inequality while the total increase is the same the pathways there differ with earnings inequality experiencing a steady increase and lifetime income inequality increasing in spurts particularly in the latter half of the 1990s finally we find the changes in lifetime income inequality are primarily driven by changes in earnings mobility and changes in the earnings distribution itself changes in employment risk and the composition of the sample such as the shift toward attaining more education and the ageing population do not play a large role 2004 the review of economics studies limited

consumption inequality and income uncertainty this paper places the debate over using consumption or income in studies of inequality growth in a formal intertemporal setting it highlights the importance of permanent and transitory income uncertainty in the evaluation of growth in consumption inequality we derive conditions under which the growth of variances and covariances of income and consumption can be used to separately identify the growth in the variance of permanent and transitory income shocks household data from britain for the period 1968 1992 are used to show a strong growth in transitory inequality toward the end of this period while younger cohorts are shown to face significantly higher levels of permanent inequality

what do normative indices of multidimensional inequality really measure we argue that normative indices of multidimensional inequality do not only measure a distribution s extent of inequity i e the gaps between the better off and the worse off but also its extent of inefficiency i e the non realized mutually beneficial exchanges of goods we provide a decomposition that allows quantifying these two parts of inequality exact formulas of the inequity and inefficiency components are provided for a generic class of social welfare functions the inequity component turns out to be a two stage measure which applies a unidimensional inequality measure to the vector of well being levels we critically discuss two prominent transfer principles viz uniform majorization and correlation increasing majorization in the light of the decomposition a decomposition of inequality in human development illustrates the analysis

social welfare orderings a life cycle perspective life cycle theories emphasize the fact that consumption is allocated intertemporally on the basis of a long term concept of resources that differs from household income because life cycle income is unobserved the distribution of this variable cannot be recovered it is shown that within a suitably defined class a predictor of life cycle income based on household income and expenditure entails a distribution dominated in a social welfare sense by the distribution of life cycle incomes a predictor constructed from socio demographic variables induces a distribution that welfare dominates the distribution of life cycle incomes

transaction network analysis for studying local exchange trading systems lets research potentials and limitations the numerous studies of local exchange trading systems lets have so far been based mostly on qualitative approaches the aim of this paper is to introduce the method of transaction network analysis as an important complement to these studies enabling one to quantitatively describe functioning of lets in terms of the actual flows of currency materialized transactions and topology of the exchange network the types of information markedly missing in most of the existing lets studies we demonstrate the potentials of the method on the case of the lets initiative rozle se based in brno czech republic looking at the transaction flows using the network analysis approach we identify the key members of the group network characteristics of the exchange system and its development over time this allows us not only to provide a complex description of the system but also to simulate certain scenarios e g removal of a key person from the network within the discussion of potentials and limitations of applying transaction network analysis for studying lets and other community currency initiatives e g time banks on a larger scale we also provide a free accessible software tool for doing so and invite other researchers to cooperate on the task

an empirical analysis of earnings and employment risk the mean and higher moments of the distribution of future income are crucial determinants of individual choices these moments are usually estimated in panel data from past income realizations inthis article we rely instead on subjective expectations available in the 1995 survey of household income and wealth a large random sample representative of italian households the survey elicits information on the distribution of future earnings and on the probability of unemployment analysis of this distribution helps us understand how individual uncertainty evolves over the life cycle and if attitudes toward risk affect occupational choices and income riskiness

a modified switching regression model for earnings differentials between the public and private using dutch 1986 data the wage differentials between public sector and private sector workers are investigated by employing a variation of the switching regression model this model imposes fewer identification restrictions on the parameters of the model than the standard switching regression model the estimation results show that some categories of public sector workers earn substantially less than private sector workers copyright 1993 by mit press

poverty and pollution abatement evidence from lead phase out abstract an extensive literature suggests that poverty prevents nations from abating many forms of pollution considerable research also proposes a competing claim that poverty delays but does not prevent pollution abatement neither position enjoys persuasive empirical support data describing the phase out of leaded gasoline allow for empirical investigation and they support the latter claim that poverty delays but does not prevent pollution abatement many poor nations have solved the problem of vehicular lead pollution and they have tended to follow rich nations in doing so the phase out achievements of richer nations have generated much of the ability and will that has enabled poor countries to solve the problem the pattern of abatement sequencing and its root causes present important implications for environmental policy and research

public and private sector wages of male workers in germany we analyze several statistical assumptions used in empirical models on public private sector wage structures based on data for germany which contain a large range of background variables usually not available in other studies we investigate the sensitivity of results to various specification and identification assumptions the standard switching regression model is extended to allow for endogeneity of education level experience and hours worked these extensions lead to considerably different parameter estimates we compare conditional and unconditional wage differentials between the public and the private sector for the various specifications these differentials are sensitive to identification assumptions but robust across specifications which do and do not allow for endogeneity of education experience and hours worked

government wage differentials a sample selection approach this paper uses the econometrics of sample selection to estimate the net wage differential between workers in the public and private sectors of the united states the results indicate workers self select by systematically locating in the sector which offers them the higher expected wage as a consequence previous research based on the assumption of random allocation between sectors is subject to serious specification bias the present estimation indicates government workers are slightly underpaid taking into account their observed characteristics and the selection process

intertemporal choice and consumption mobility the theory of intertemporal consumption choice makes sharp predictions about the evolution of the entire distribution of household consumption not just about its conditional mean in the paper we study the empirical transition matrix of consumption using a panel drawn from the bank of italy survey of household income and wealth we estimate the parameters that minimize the distance between the empirical and the theoretical transition matrix of the consumption distribution the transition matrix generated by our estimates matches remarkably well the empirical matrix both in the aggregate and in samples stratified by education our estimates strongly reject the consumption insurance model and suggest that households smooth income shocks to a lesser extent than implied by the permanent income hypothesis jel d52 d91 i30

leaving the mainstream behind uncovering subjective understandings of economics instructors roles in the wake of the economic crisis a number of student organizations and researchers highlighted the lack of pluralism and heterodox approaches in economics curricula the relevance of pluralism becomes clear once set within the implications of a given scientific discourse on reality e g economics and policy making this study explores the role of instructors in co constructing the pluralism discourse and debates while recognizing the role of institutional obstacles to change within the discipline an empirical field study is conducted with lecturers in introductory economics courses at the wu vienna university of economics and business where they place themselves within the pluralism discourse via a q study a mixed method employed for studying subjectivity in socially contested topics in q a set of statements undergo a sorting procedure on a relative ranking scale followed by factor rendering four voices are identified moderate pluralist mainstreamers responsible pluralists and applied pluralists the implications of their ideas are discussed from the viewpoint of discursive institutionalism stressing the role of ideas and discourse in institutional change although a discursive readiness for changes towards more pluralism is claimed strategies for overcoming the difficulties on the institutional level need to be developed

the dynamics and inequality of italian men s earnings long term changes or transitory fluctuations this paper provides a longitudinal perspective on changes in italian men s earnings inequality since the late 1970s by decomposing the earnings autocovariance structure into its long term and transitory parts cross sectional earnings differentials grew over the period and the longitudinal analysis shows that such growth was determined by the long term earnings component using parameter estimates to analyze low pay probabilities shows that low pay persistence and the probability of repeated low pay episodes grew for all birth cohorts during the early 1990s moreover long term heterogeneity is found to characterize the earnings distribution of nonmanual workers accounting for a large part of overall heterogeneity

immigrant job search assimilation in canada immigrant assimilation is a major issue in many countries while most of the literature studies assimilation through a human capital framework we examine the role of job search assimilation to do so we estimate an equilibrium search model of immigrants operating in the same labour market as natives where newly arrived immigrants have lower job offer arrival rates than natives but can acquire the same arrival rates according to a stochastic process using canadian panel data we find substantial differences in job offer arrival and destruction rates between natives and immigrants that are able to account for three quarters of the observed earnings gap the estimates imply that immigrants take on average 13 years to acquire the native search parameters due to immigrants facing much lower on the job offer arrival rates than natives the model predicts that earnings growth through job search is minimal for immigrants prior to their job search assimilation

an international comparison of lifetime inequality how continental europe resembles north america we compare earnings inequality and mobility across the united states canada france germany and the united kingdom during the late 1990s a flexible model of earnings dynamics that isolates positional mobility within a stable earnings distribution is estimated earnings trajectories are then simulated and lifetime annuity value distributions are constructed earnings mobility and employment risk are found to be positively correlated with base year inequality taken together they produce more equalization in countries with high cross section inequality such that the countries in our sample have more similar lifetime inequality levels than cross section measures suggest

measuring labor market frictions a cross country comparison in this paper we define and estimate measures of labor market frictions using data on job durations we compare different estimation methods and different types of data we propose and apply an unconditional inference method that can be applied to aggregate duration data it does not require wage data it is invariant to the way in which wages are determined and it allows workers to care about other job characteristics the empirical analysis focuses on france but we perform separate analyses for the united states of america the united kingdom germany and the netherlands we quantify the monopsony power due to search frictions and we examine the policy effects of the minimum wage unemployment benefits and search frictions jel j63 j64

labor market search and schooling investment we generalize a search matching and bargaining model to allow individuals to acquire productivity enhancing schooling prior to labor market entry in general search frictions and weakness in bargaining position contribute to underinvestment in schooling from an efficiency perspective using estimates of a general equilibrium version of the model in which firm vacancy creation decisions are included we find that minimum wages and schooling subsidies improve aggregate welfare but have very different welfare impacts across the ability distribution in particular policies that maximize the average welfare of workers have strongly negative effects on the welfare of the least able

what is a public sector pension worth we measure accruals in defined benefit db pension plans for public and private sector workers in britain using typical differences in scheme rules and sector specific lifetime age wage profiles by sex and educational group we show not just that coverage by db pension plans is greater in the public sector but that median pension accruals as a percentage of salary are more than 6 higher among db covered public sector workers than covered private sector workers this is largely driven by earlier normal pension retirement ages but also by differences in earnings profiles across the sectors

green preferences as regulatory policy instrument abstract we examine here the suggestion that if consumers in sufficient numbers are willing to pay the premium to have power generated using low emission technologies tax or permit policies become less necessary or stringent while there are implementation difficulties with this proposal our purpose is more fundamental can economics make sense of using preferences as a regulatory instrument if green preferences are exogenously given to what extent can or should they be regarded as a substitute for other policies even with green preferences production and consumption of polluting goods continue to impose social costs not borne in the market moreover if green preferences are regarded as a policy instrument the no policy baseline would require a problematic specification of counterfactual non green preferences viewing green preferences as a regulatory policy instrument is conceptually sensible if the benchmark for optimal emissions is based on value judgments apart from the preferences consumers happen to have if so optimal environmental protection would be defined by reference to ethical theory or even less favorably by prescriptions from policy advocates who give their own preferences great weight while giving those of the public at large and the costs they bear very little consideration

duration to first job and the return to schooling estimates from a search matching model this paper investigates the properties of the joint distribution of the duration to the first post schooling full time job and of the accepted wage for that job within a search matchingbargaining theoretic model the model provides an interpretation of the observations on duration to first job and accepted wages that differentiates between behavioural influences and market fundamentals in determining the accepted wage schooling relationship the return to schooling is appropriately measured by differences in the wage offer distribution which depends only on market fundamentals we use data from the 1979 youth cohort of the national longitudinal surveys of labor market experience to follow several school leaving cohorts of young males a model which allows for five types of heterogeneous workers within schooling race groups fits the duration and wage data well for all such groups offer probabilities for all groups are estimated to be close to one mean offered wages are about 1000 less than mean accepted wages and the internal annual rate of return for attending college relative to graduating from high school is 32 for blacks and 17 for whites this paper investigates the properties of the joint distribution of the duration to the first post schooling full time job and of the accepted wage for that job within a search matching bargaining model it is a well established empirical regularity that hazard rates are decreasing with the duration of search unemployment it is also true for the data we use that the sample mean of the accepted wage associated with the first job is not increasing with duration these findings hold for both black and white male youth at all levels of schooling conditional on schooling however the time between leaving school and working at the first full time job is longer for blacks and their accepted mean wage is lower conditional on race the time between leaving school and working at the first full time job is shorter for those with higher levels of schooling and their accepted mean wage is higher interestingly blacks display a similar pattern of duration and accepted wages to whites who are one level of schooling below e g black high school graduates and white high school dropouts

an empirical equilibrium search model of the labor market in structural empirical models of labor market search the distribution of wage offers is usually assumed to be exogenous however because in setting their wages profit maximizing firms should consider the reservation wages of job seekers the wage offer distribution is essentially endogenous we investigate whether a proposed equilibrium search model in which the wage offer distribution is endogenous is able to describe observed labor market histories we find that the distributions of job and unemployment spells are consistent with the data and that the qualitative predictions of the model for the wages set by employers are confirmed by wage regressions the model is estimated using panel data on unemployed and employed individuals we distinguish between separate segments of the labor market and we show that productivity heterogeneity is important to obtain an acceptable fit to the data the results are used to estimate the degree of monopsony power of firms further the effects of changes in the mandatory minimum wage are examined

identification of search models using record statistics this paper shows how record value theory a branch of statistics that deals with the timing and magnitude of extreme values in sequences of random variables can be used to recover features of the wage offer distribution in conventional search models using national longitudinal survey of youth nlsy wage data i show that the data are not compatible with specifications for the offer distribution characterized by extreme negative skewness in addition i show that my approach can be used to construct a bound on the returns to job seniority my results suggest that job seniority plays only a minor role in the wage growth of the workers surveyed in the nlsy copyright 2008 wiley blackwell

reducing dependence on chemical fertilizers and its financial implications for farmers in india the fertilizer intensive technology so long promoted in agriculture produced a green revolution but has brought long term damages to soil quality the technology now appears unsustainable for future agricultural development in india both on account of its ecological implications and the burden on the budget there is now a need to revisit the traditional methods once used in agriculture and to look for a judicious blend of chemical fertilizer based technology with organic manure since manures are relatively less productive in the short run there is an alarm that a shift in technology away from the chemical fertilizer towards organic manure may mean a compromise in production or may hurt the incomes of farmers this paper emphasizes the environmental benefits of a possible shift in agricultural technology while keeping in view the importance of sustaining crop yield levels and protecting farmers incomes considering two major crops in india in specific states the paper finds that over time while fertilizer use intensified several times over the use of manure in agriculture either stagnated or declined the manure market remained localized limited and unorganized and its price was significantly higher than fertilizer in terms of nutrients in contrast to the organized and state supported fertilizer market the paper estimates quadratic yield functions based on cross section household level data and using the prices faced by farmers as reported by official survey finds that in majority of the cases there will not be any financial loss resulting from a small shift in technology towards organic manure such a shift can however be considered feasible if the losing households are compensated and if manure price is kept in control by promoting a more dynamic manure market d 2004 elsevier b v all rights reserved

labour market structure and inequality a comparison of italy and the u s markets with rigid labour regulations and centralized wage setting are often thought to be inefficient but egalitarian using a model of off and on the job search and event history individual level data for italy and the u s we show that while the cross sectional wage distributions of young italian males are much more compressed than are the comparable distributions for young white u s males the estimated search model implies that the distribution of lifetime welfare is no more disperse in the u s than it is in italy our model implies that the high frequency of movements between labour market states leads to both a relatively equitable distribution of long run welfare in the u s and a high level of cross sectional inequality

wage differentials employer size and unemployment the unique equilibrium solution to a game in which a continuum of individual employers choose permanent wage offers and a continuum of workers search by sequentially sampling from the set of offers is characterized wage dispersion is a robust outcome provided that workers search while employed as well as when unemployed the unique nondegenerate equilibrium distribution of wage offers is constructed for three cases 1 identical workers and employers 2 identical employers and an atomless distribution of worker supply prices and 3 identical workers and an atomless distribution of job productivities copyright 1998 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

unemployment fluctuations match quality and the wage cyclicality of new hires we revisit the issue of the high cyclicality of wages of new hires we show that after controlling for composition effects likely involving procyclical upgrading of job match quality the wages of new hires are no more cyclical than those of existing workers the key implication is that the sluggish behaviour of wages for existing workers is a better guide to the cyclicality of the marginal cost of labour than is the high measured cyclicality of new hires wages unadjusted for composition effects key to our identification is distinguishing between new hires from unemployment versus those who are job changers we argue that to a reasonable approximation the wages of the former provide a composition free estimate of the wage flexibility while the same is not true for the latter we then develop a quantitative general equilibrium model with sticky wages via staggered contracting on the job search and heterogeneous match quality and show that it can account for both the panel data evidence and aggregate evidence on labour market volatility

the central government private sector wage differential since ehrenberg and schwarz 1986 there has been a plethora of articles investigating the relationship between public and private sector wages this article examines part of this post 1986 literature by reviewing articles that examine central government private sector wage differentials in sum most articles find that there is a premium paid to central government workers although the premium has declined in recent years in developing countries however the differential is usually negative women and minorities tend to do better in the public sector relative to their private sector counterparts the evidence on union premiums between sectors is mixed although the premium tends to be higher in the private sector however public sector union workers do not do much better than private sector union members the magnitude of all of the wage differentials discussed are sensitive to the estimation technique and data source used the most common explanation for the public sector wage premium is economic rent accruing to government workers although the public sector wage determination literature suggests that the differential is due to returns to political and vote producing activities not relevant in the private sector