eco labelling consequences in general equilibrium a graphical assessment international environmental groups propose to implement new standards of forest management through programs that certify producers who meet criteria to enhance biodiversity or sustainability these producers could earn an eco label that identifies their products for consumers we consider whether a market economy might generate feedbacks that produce undesirable side effects as consumers respond to price changes while the general case is ambiguous the theoretical framework shows the potential that certification may lead to a reallocation of land toward less ecologically sustainable uses with the possibility of sufficient impact to diminish global biodiversity or sustainability of forest products

demand for charity donations in private non profit markets the case of the u k abstract this paper presents estimates of the demand for donations for u k charities in 1985 these estimates make demand depend upon price fund raising expenditure a quality index and alternative revenue sources the price elasticity of donations found here shows for the most part an elastic response and is consistent with previous studies using u s data our empirical results suggest that non profits in the u k unlike their counterparts in the u s are net revenue maximisers we discovered no significant evidence that public donations crowded out private donations in our sample of 300 charities

welfare criteria from choice an axiomatic analysis abstract we propose an axiomatic approach to the problem of deriving a linear welfare ordering from a choice function admissibility requires that the ordering assigned to a rational choice function is the one that rationalizes it neutrality states that the solution covaries with permutations of the alternatives persistence stipulates that the ordering assigned to two choice functions is also assigned to every choice function in between we prove that these properties characterize the sequential solution the best alternative is the alternative chosen from the universal set the second best is the one chosen when the best alternative is removed and so on we also discuss some alternative axioms and solutions

testing economic models of volunteer labour supply some empirical evidence for the german red cross we use a new data set collected by means of a questionnaire study of volunteers of the german red cross to test predictions of three competing economic models of volunteer labour supply the public goods model the private consumption model and the human capital model the three competing economic models make different predictions regarding the response of a volunteer s labour supply to a change in the perceived labour supply of other volunteers our empirical results lend support to the public goods model

entrepreneurship social mobility and income redistribution in south india development economists have been preoccupied with the problem of increasing the size of the gnp pie to the relative neglect of its distribution despite the recent disenchantment with the viewpoint that all classes share in the benefits of industrial growth empirical data on the distribution of income business opportunity and economic power are in short supply many of the studies on entrepreneurship and economic development when they are not apologetics for ruthless capitalist exploitation as paul baran suggests extol the achievements of the capitalist entrepreneur without examining class origins and monopoly advantage joseph schumpeter sees entrepreneurs irrespective of class origin as heroic figures with the dream and will to found a private kingdom to conquer adversity to achieve success for its own sake and to experience the joy of creation for gustav papanek 1967 the private entrepreneur who is frugal diligent far sighted remarkably able and willing to take political risks is in large part responsible for the success of pakistan in achieving rapid industrialization

volunteering and life or financial shocks does income and wealth matter volunteering is a dominant social force that signals a healthy state however although the literature on volunteering is extensive knowledge on how life s discontinuities life and financial shocks affect volunteering is limited because most studies work with static cross sectional data to reduce this shortcoming we use longitudinal data from australia hilda that track the same individuals over time to assess how individuals from different income and wealth groups respond to life and financial shocks with respect to volunteering although both income and wealth can act as buffers against life shocks by providing stability and reducing vulnerability which decreases the need to actually change behaviour patterns we observe more heterogeneity than expected and also stickiness at the lowest income levels response delays in post shock volunteering also suggest that volunteering habits may be driven and influenced by strong commitment and motivation that are not shattered by life or financial shocks in fact the amount of time spent volunteering tends to increase after negative income shocks and decrease after positive income shocks

evolutionary origins of the endowment effect evidence from hunter gatherers the endowment effect the tendency to value possessions more than non possessions is a well known departure from rational choice and has been replicated in numerous settings we investigate the universality of the endowment effect its evolutionary signi cance and its dependence on environmental factors we experimentally test for the endowment effect in an isolated and evolutionarily relevant population of hunter gatherers the hadza bushmen of northern tanzania we nd that hadza living in isolated regions do not display the endowment effect while hadza living in a geographic region with increased exposure to modern society and markets do display the endowment effect jel c93 d12 o15 this paper uses a natural experiment in a hunter gatherer population to provide evidence on three questions the universality of a behavioral bias the endowment effect its dependence on cultural factors and its evolutionary signi cance systematic deviations from rational behavior have been extensively documented along with their importance for market outcomes yet evidence on the three questions above is sparse especially for biases in economic decisions first most experiments are conducted in industrialized societies and in particular on college campuses so biases could be the result of shared experiences as opposed to innate features of human behavior second cross cultural experiments typically compare very different groups making it hard to attribute differences in behavior to a speci c cultural factor due to omitted variable bias roth et al 1991 henrich et al 2001 2006 third while many contributions in economics have proposed evolutionary

measuring the benefits of air quality improvements a hedonic salary approach abstract this paper estimates the compensating variation associated with nonmarginal changes in air quality using a hedonic salary model and 1970 data collected for a national sample of university professors recent advances in the theory of hedonic prices are utilized in constructing the theoretical model and formulating a procedure for generating empirical estimates lower bound estimates of the compensating variation associated with a one standard deviation increase in total suspended particulates 27 6 mgs cu meter 24 hours were 419 for full professors 234 for associate professors and 209 for assistant professors in 1970 these results were not sensitive to the specification of the hedonic salary equation

indifference or indecisiveness choice theoretic foundations of incomplete preferences abstract a commonly held belief in economics is that an individual s preferences that are revealed by her choices must be complete this paper takes issue with this position by showing that one may be able to distinguish between indifference and indecisiveness of an agent upon observing her choice behavior we relax the standard weak axiom of revealed preferences warp and show that a potent theory of individual choice with and without risk can be founded on this weaker axiom when it is coupled with some other standard postulates the most notable features here are that an agent is allowed to be indifferent between certain alternatives and indecisive about others moreover an outside observer can identify which of these actually occur upon examining the observable choice behavior of the decision maker as an application we also show how our theory may be able to cope with the classical preference reversal phenomenon

social networks and private philanthropy abstract a theoretical model is provided in which an individual s social network enhances the consumption benefits from the public good we find conditions under which investments in network enhancing infrastructure would encourage individuals to donate time and money to charity an empirical investigation of the link between networks and private philanthropy is undertaken using the canadian national survey of giving volunteering and participating we find strong evidence that networks promote donations of time and money

an economic theory of self control the concept of self control is incorporated in a theory of individual intertemporal choice by modeling the individual as an organization the individual at a point in time is assumed to be both a farsighted planner and a myopic doer the resulting conflict is seen to be fundamentally similar to the agency conflict between the owners and managers of a firm both individuals and firms use the same techniques to mitigate the problems which the conflicts create this paper stresses the implications of this agency model and discusses as applications the effect of pensions on saving saving and the timing of income flows and individual discount rates

more labour market flexibility for more innovation evidence from employer employee linked micro data this paper examines labour market flexibility in various definitions and its impact on innovation the results demonstrate that the relationship strongly depends on the type of innovation as well as the predominant innovation regime in which a company operates thereby labour market flexibility does not influence innovation in an entrepreneurial innovation regime characterised by high competition low market entry barriers and generally available knowledge that might explain why the silicon valley has been successful despite of having a labour market with a strong strong hire and fire mentality in contrast labour market flexibility significantly reduces the likelihood of innovation in a routinised innovation regime with leading innovators and high entry barriers similar to the us automobile industry and steel districts that did not succeed these findings emphasise that the currently discussed structural labour market reforms might hamper innovation as technological change still requires a level of security and stability

labour market deregulation flexibility and innovation labour flexibility is often portrayed as important to competitive success using evidence from an original survey of uk firms this paper investigates the relationships between firms use of on the one hand various flexible work practices human resource management techniques and industrial relations systems and on the other hand the innovative activities of those firms our results suggest that the sort of low road labour flexibility practices encouraged by labour market deregulation short term and temporary contracts a lack of employer commitment to job security low levels of training and so on are negatively correlated with innovation

is there a trade off between supervision and wages an empirical test of efficiency wage theory abstract the logic of efficiency wage theory suggests a trade off between wages and supervision this paper reports evidence that high levels of supervision are indeed associated with lower wage levels the empirical investigation centers on the effect that safety supervision by host employers has on the wages of contract maintenance workers in the petrochemical industry this narrow focus is important special institutional features of the contract employment relationship in petrochemicals make it possible to ameliorate econometric problems that may have influenced earlier studies

nonconvexity induced by external costs on production theoretical curio or policy dilemma this paper considers with a degree of scepticism the sweeping policy conclusions that can be found in the theoretical literature concerning nonconvexit ies in the social production set induced by external costs on firms this literature has provided proofs of the possibility that such nonconvexit ies exist but these proofs have readily been interpreted as a basis on which to judge the advisability of policies to control external costs 2 indeed a number of authors have felt able to proceed from specific theoretical examples of the existence of nonconvexity to the opinion that nonconvexity represents a general obstacle to policy one of the ma in themes will be to demonstrate that the theoretical possibility of the existence of a nonconvexity at a m icro level does not imply the existence of a m icro or a fortiori macro nonconvexity in the real world nor does it imply that any nonconvexity that does exist in reality is relevant to policy the intention is not to deny that nonconvexit ies may represent an obstacle to the efficient control of external costs in specific contexts but in order to establish the real world policy relevance of a nonconvexity it is necessary to verify its existence emp irically and to establish that it stands in a particular relationship to the no policy starting point

well being and or quality of life in eu countries through a multidimensional index of sustainability abstract the aim of my paper is to demonstrate that sen s theory of well being can be applied to make the concept of sustainable human development operational through the building of a multidimensional index of sustainability which takes into account at the same time economic social and environmental variables this index may be considered an alternative to the current measures of welfare sustainability since not only conventional measures such as gdp but also multi attribute indices such as human development index hdi genuine savings index of sustainable economic welfare isew etc are found to be inadequate to make the concept of sustainable development operational therefore the limitations of these measures of welfare sustainability justify the search for a new index of sustainability this index will show at the operational level how sen s theory of well being can be useful to sustainable development it was applied to eu countries using the standardised deviation methodology being the closest and most suitable methodology to be adopted for building multidimensional indices the factor analysis methodology will also be used in my paper lastly the comparison between sen s trend of sustainability and gdp trend index number which are both of them applied to italy will show how much the criticisms and the limitations directed towards the indicator of gdp are founded

family model of contributions to non profit organizations and labour supply in this article a model is presented in which the family decides the labour supply of both spouses and their time donations to non profit organizations for the estimation spanish data was used which showed that family size and pre school children influence decisions made about time distribution of husband and wife women with fewer family responsibilities work longer hours and donate more time whilst the effect on men is the contrary also monetary donations by the family are directly related to time donations by the spouses

charitable contributions and intergenerational transfers abstract this paper investigates the effects of bequest taxes and the income of children on the lifetime charitable contributions of parents using matched income tax records for parents and children the results show a positive elasticity of 0 6 for contributions with respect to the tax price of bequests the paper also finds that the income of children affects the amount that parents contribute to charity the results show a positive elasticity of up to 0 14 for contributions by parents with respect to the income of children implying that when children are better off parents are likely to increase charitable giving

gifts of money and gifts of time estimating the effects of tax prices and available time abstract we develop a model that recognizes interdepence between individuals charitable cash donations and volunteer labor using survey data we estimate giving functions jointly allowing a binding non negativity constraint in one giving equation to affect the form of the other the tax price of money giving is significant in all equations with estimated elasticities of 1 7 for money giving 2 1 for women s time and 1 1 for men s time the complementarity between volunteer labor and cash donations suggests that the effect of tax policy on philanthropy is understated by considering monetary donations alone

in search of homo economicus behavioral experiments in 15 small scale societies we can summarize our results as follows first the canonical model is not supported in any society studied second there is considerably more behavioral variability across groups than had been found in previous cross cultural research and the canonical model fails in a wider variety of ways than in previous experiments third group level differences in economic organization and the degree of market integration explain a substantial portion of the behavioral variation across societies the higher the degree of market integration and the higher the payoffs to cooperation the greater the level of cooperation in experimental games fourth individual level economic and demographic variables do not explain behavior either within or across groups fifth behavior in the experiments is generally consistent with economic patterns of everyday life in these societies

little innovation many jobs an econometric analysis of the italian labour productivity crisis during the past twenty years italy has realized changes in labour legislation leading to a decentralization of wage bargaining and increased flexibility in labour relations both these factors have helped to curb wage growth and to enhance employment growth but have also led to a crisis in italian labour productivity growth our estimates among 3 000 firms show that firms with high shares of flexible workers a high labour turnover and lower costs of labour relative to capital experienced significantly lower rates of labour productivity growth our findings raise doubts about the mainstream call for flexibilisation of european labour markets we argue hat the italian shift towards a low productive and labour intensive growth path is problematic gainst the background of an ageing population

free riding and ethnic heterogeneity abstract this paper provides a new explanation for lower levels of public good provision in heterogeneous societies compared to their homogeneous counterparts social sharing norms force rich individuals to share part of their income with their poor relatives but do not apply across different ethnic groups because there is a more extensive redistribution in more homogeneous societies the cost of contributing to the public good is lower the model predicts the level of public goods provision and welfare monotonically decreases with the number of different ethnic groups

social preferences in the lab a comparison of students and a representative population we report from a lab experiment conducted with a sample of participants that is nationally representative for the adult population in norway and two student samples economics students and non economics students the participants make choices both in a dictator game a non strategic environment and in a generalized trust game a strategic environment we find that the representative sample differs fundamentally from the student samples both in the relative importance assigned to different moral motives efficiency equity and reciprocity and in the level of selfish behavior it is also interesting to note that the gender effects observed in the student samples do not correspond to the gender effects observed in representative sample finally whereas economics students behave less pro socially than non economics students the two student groups are similar in the relative importance they assign to different moral motives

are patient regarding preferences stable evidence from a laboratory experiment with physicians and medical students from different countries abstract we quantify patient regarding preferences by fitting a bounded rationality model to data from an incentivized laboratory experiment where chinese medical doctors german medical students and chinese medical students decide under different payment schemes we find a remarkable stability in patient regarding preferences when comparing subject pools and we cannot reject the hypothesis of equal patient regarding preferences in the three groups the results suggest that a health economic experiment can provide knowledge that reach beyond the student subject pool and that the preferences of decision makers in one cultural context can be of relevance in a very different cultural context

where do social preferences come from where do preferences for fairness come from we use a unique field setting to test for a spillover of sharing norms from the workplace to a laboratory experiment fishermen working in teams receive random income shocks catching fish that they must regularly divide among themselves we demonstrate a clear correlation between sharing norms in the field and sharing norms in the lab furthermore the spillover effect is stronger for fishermen who have been exposed to a sharing norm for longer suggesting that our findings are not driven by selection effects our results are consistent with the hypothesis that work environments shape social preferences

environmental cleanliness as a public good welfare and policy implications of nonconvex preferences abstract this paper explores the implications of a form of nonconvexity in individual preferences over the public good cleanliness the implications of this nonconvexity on equilibrium outcomes welfare analysis the process of development and optimal government policy are examined the nonconvexity can imply a role for government in providing a commitment to a clean environment even if the government has a cost disadvantage in cleaning compared with individuals by providing a credible commitment to a clean environment the government can induce private individuals to undertake optimal levels of cleaning on their own

citizens and wetlands evaluating the ely citizens jury abstract a citizens jury cj is a method to aid decision making by public bodies and is loosely based on the idea of a criminal jury ordinary members of the public acting in their capacity as citizens concerned with the public good rather than consumers concerned with private interest are drawn together to reach a public decision the jury is independent and its verdict is expected to carry some authority derived from an understanding that the jury is representative and the deliberation is satisfactory a cj was organised as part of a larger uk study which also conducted a contingent valuation survey on broadly the same valuation issue land use in a former wetland region in cambridgeshire uk a major aim of the study was to investigate whether cjs allow views of a different kind to those captured by contingent valuation surveys to be expressed views couched in terms of public benefits right and wrong and the common good if this is true cjs offer a promising forum for articulating views and even recommending decisions about public goods including environment features

a framework for mapping and comparing behavioural theories in models of social ecological systems formal models are commonly used in natural resource management nrm to study human environment interactions and inform policy making in the majority of applications human behaviour is represented by the rational actor model despite growing empirical evidence of its shortcomings in nrm contexts while the importance of accounting for the complexity of human behaviour is increasingly recognized its integration into formal models remains a major challenge the challenges are multiple i there exist many theories scattered across the social sciences ii most theories cover only a certain aspect of decision making iii they vary in their degree of formalization iv causal mechanisms are often not specified we provide a framework mohub modelling human behavior to facilitate a broader inclusion of theories on human decision making in formal nrm models it serves as a tool and common language to describe compare and communicate alternative theories in doing so we not only enhance understanding of commonalities and differences between theories but take a first step towards tackling the challenges mentioned above this approach may enable modellers to find and formalize relevant theories and be more explicit and inclusive about theories of human decision making in the analysis of social ecological systems

a comparison of two methods for eliciting contingent valuations of colorectal cancer screening willingness to pay wtp is being used increasingly in health technology assessment although a number of methodological issues remain unresolved using data obtained from a randomised questionnaire survey we investigated the metrical properties of two wtp formats the open ended question versus the payment scale in the context of screening for colorectal cancer approximately 2800 responses were analysed household income attitudes toward health promotion and personal risk perceptions were the principal determinants of the nature and value of response in comparison with the open ended format the payment scale achieved a higher completion rate and generated higher valuations we believe that a framing effect is the most plausible explanation for these differences in performance in contrast to previous findings we do not find subjects perceptions of the resource cost of interventions to be a convincing explanation for either their wtp values or inconsistencies between values and preferences although a proportion of respondents protested at the notion of valuation the majority offer positive valuations although typically of a lower value that non protesters

tying odysseus to the mast evidence from a commitment savings product in the philippines we designed a commitment savings product for a philippine bank and implemented it using a randomized control methodology the savings product was intended for individuals who want to commit now to restrict access to their savings and who were sophisticated enough to engage in such a mechanism we conducted a baseline survey on 1777 existing or former clients of a bank one month later we offered the commitment product to a randomly chosen subset of 710 clients 202 28 4 percent accepted the offer and opened the account in the baseline survey we asked hypothetical time discounting questions women who exhibited a lower discount rate for future relative to current trade offs and hence potentially have a preference for commitment were indeed significantly more likely to open the commitment savings account after twelve months average savings balances increased by 81 percentage points for those clients assigned to the treatment group relative to those assigned to the control group we conclude that the savings response represents a lasting change in savings and not merely a short term response to a new product

when more alternatives lead to less choice this paper shows that when the alternatives offered to consumers span the preference space as it would be chosen by a firm search or evaluation costs may lead consumers not to search and not to choose if too many or too few alternatives are offered if too many alternatives are offered then the consumer may have to engage in many searches or evaluations to find a satisfactory fit this may be too costly and result in the consumer avoiding making a choice altogether if too few alternatives are offered then the consumer may not search or choose fearing that an acceptable choice is unlikely these two forces result in the existence of a finite optimal number of alternatives that maximizes the probability of choice

voluntary eco labeling and the price premium international environmental organizations propose voluntary eco labeling as a market incentive to promote industry to operate in an ecologically sustainable and environmentally friendly manner a microeconomic analysis questions whether voluntary eco labeling will cause producer profits in a competitive industry to decline and whether eco labeling will necessarily generate different prices for labeled and unlabeled product using wood product as an example results identify conditions that may exist when firms lose profits even under a voluntary system and where existing production constraints may lead to a single price regardless of labeling

human resource management and performance in european firms we develop a theoretical framework to examine three hypotheses on the relationship between human resource management hrm practices and organisational performance in european firms the first is that collaborative forms of hrm practice are more strongly associated with superior firm performance than calculative forms the second is that these associations are strongest where national institutional and normative settings support them the third is that employer employee consultative committees and collective payment methods are also associated with superior firm performance the first two propositions are strongly empirically supported as is the third albeit more weakly the implications of the findings for european policy and varieties of capitalism theory are discussed

litter and waste management disposal taxes versus user charges littering and rubbish collection involve a divergence between private and social costs this note suggests there is a need to consider these two problems jointly viewed in isolation a user charge for rubbish collection has often been suggested as a means of internalizing the waste management externality however viewed as part of the wider problem it turns out that this charge should be negative that is there should be a refund or user subsidy associated with the proper disposal of rubbish

technological regimes and schumpeterian patterns of innovation this paper proposes that the specific pattern of innovative activities in an industry can be explained as the outcome of different technological learning regimes a technological regime is defined by the particular combination of technological opportunities appropriability of innovations cumulativeness of technical advances and properties of the knowledge base building upon the distinction between schumpeter mark i and schumpeter mark ii industries this paper provides empirical estimates of the relationships between indicators of the schumpeterian patterns of innovation concentration of innovative activities stability in the hierarchy of innovators and importance of new innovators and indicators of the variables defining technological regimes

evaluating innovation and labour market relationships the case of italy in this paper the link between labour market flexibility and innovation is analysed paying particular attention to the different technological regimes of economic activities and the different geographical areas of the italian economy a dynamic panel data specification is used to assess the endogenous relationship between patents included as a proxy of the innovation and job turnover and wages which represent labour market indicators the results show that higher job turnover only has a significant and negative impact on patent activities in regional sectors of northern italy while a positive and significant impact of blue and white collar wages has been generally found

the evaluation of river water quality improvements by the contingent valuation method the results of an application of the contingent valuation method cvm to the estimation of the recreational benefits which would result from improvements in river water quality are described this

inequality aversion versus risk aversion inequality aversion and risk aversion are widely assumed in economic models however existing economic literature fails to distinguish between the two this paper presents methodology and a laboratory experiment which separates inequality aversion from risk aversion in a set of laboratory experiments subjects had to choose between two risky alternatives which pay meaningful prizes with the same individual risk but different levels of egalitarianism thus the choice of the more egalitarian alternative implies a higher level of inequality aversion the experiment was conducted among children some of whom live on a communal system kibbutz and some in the city

sentimental fools a critique of amartya sen s notion of commitment abstract commitment is problematic because one sometimes pursues it against one s interest to solve it the paper proposes a distinction between non binding and binding commitments non binding commitment is about ambition such as becoming a great chef which bolsters welfare in the pecuniary sense as well as self respect in contrast binding commitment is about honesty while it diminishes welfare it augments self integrity the neoclassical view reduces both commitments to interest while the multiple self approach separates both commitments from interest the separation permits the confusion of sentimental fools who enter commitments without regard to interest with rational sentimentalists who take interest into consideration

trust contract and economic cooperation after providing a brief overview of the standard economic analysis of incomplete contracts in terms of property rights transaction costs and self enforcing implicit contracts the author shows why in the orthodox view trust is not a pertinent category to their negotiation or effectiveness drawing on various empirical studies which he has undertaken in the area of industrial relations the author develops an alternative approach to the study of incomplete contracts in which the concept of trust is central in this alternative vision boundedly rational agents with limited foresight form provisional judgements about the trustworthiness of their trading partners based on the success of their past encounters a consequence of this alterna tive understanding of incomplete contracts is that there is no guarantee that coopera tion will succeed even when the circumstances appear to promise mutual gain the author argues however that by establishing an appropriate set of procedural rules to guide their response to the unanticipated agents can promote the kinds of mutual learning that contribute to the build up of trust and that increase the likelihood of successful cooperation

modeling charitable contributions of time and money abstract public goods theory predicts that government spending on charity can perfectly crowd out charitable contributions empirical research has found little support for the perfect crowd out hypothesis however the empirical work only measures part of a contributor s total contribution gifts of money contributors also volunteer labor this article extends the public goods model to the case in which individuals contribute both time and money to a charity that in turn produces a public good the model suggests that charitable contributions of time and money are perfectly substitutable in equilibrium this result offers new interpretations for existing empirical observations and suggests a new test of the crowd out hypothesis the implications of the model are empirically tested using a national survey of charitable activity

volunteer labor supply abstract we model the supply of volunteer labor which received an explicit wage of zero quantitatively important it constituted over 5 percent of the entire labor supply in the united states in 1980 both consumption and investment models are considered the former positing volunteering as an ordinary consumer good while the latter posits it as a means of obtaining on the job experience empirical estimation based on survey data discloses statistically significant effects of price and income variables on the supply of volunteer labor

voluntary activities and daily happiness in the united states this article analyzes differences in daily happiness between those individuals in the united states who perform voluntary activities during the day and those who do not using the well being module of the american time use survey 2010 we find that those who devote any time to voluntary activities during the day report higher levels of daily happiness than those who do not comparing the happiness obtained from a range of activities we find that volunteering is among the most enjoyable indicating that time spent on voluntary activities is utility enhancing we document that the effect of voluntary activities on the experienced utility of individuals can be decomposed into a time composition effect and an activity effect with the latter explaining between 11 and 46 of the observed difference jel d13 j16 j22

modelling the effectiveness of climate policies how important is loss aversion by consumers abstracts reliable decarbonisation policies can only be developed with a thorough understanding of how consumers choose between energy technologies current energy models assume optimal consumer decisions which may result in expectations of the effectiveness of climate policies that are far too optimistic prospect theory on the other hand aims to model real life choices based on empirical observations that losses have a relatively larger influence on decisions than gains relative to a reference point here we show for the first time how loss aversion can be included into a global energy model with high spatial resolution using heating technology uptake as a case study we simulate the future heating technology diffusion for 59 world regions covering the globe with and without the consideration of loss aversion we find that ignoring the implications of loss aversion overestimates the market uptake of renewables in individual countries as well as on the global level as a consequence loss aversion results in higher projected co2 emissions by households and the need for much stronger policy instruments for achieving decarbonisation targets in the case of residential heating a carbon tax of 200 tco2 is projected to reduce overall emission levels to a similar extent than a carbon tax of 100 tco2 without the consideration of loss aversion even for similar degrees of decarbonisation accounting for loss aversion implies substantial changes in the underlying technology composition technology choices become subject to a conservative shift towards low carbon technologies which are relatively less efficient but already more established in local markets

causes and consequences of hysteresis aggregate demand productivity and employment in this work we develop an agent based model where hysteresis in major macroeconomic variables e g gross domestic product productivity unemployment emerges out of the decentralized interactions of heterogeneous firms and workers building upon the schumpeter meeting keynes family of models cf in particular dosi et al 2016b 2017c we specify an endogenous process of accumulation of workers skills and a state dependent process of firms entry indeed hysteresis is ubiquitous however this is not due to market imperfections but rather to the very functioning of decentralized economies characterized by coordination externalities and dynamic increasing returns so contrary to the insider outsider hypothesis blanchard and summers 1986 the model does not support the findings that rigid industrial relations may foster hysteretic behavior in aggregate unemployment on the contrary this contribution provides evidence that during severe downturns and thus declining aggregate demand phenomena like decreasing investment and innovation rates skills deterioration and declining entry dynamics are better candidates to explain long run unemployment spells and reduced output growth in that more rigid labor markets may well dampen hysteretic dynamics by sustaining aggregate demand thus making the economy more resilient

internal consistency of choice internal consistency of choice has been a central concept in economics decision theory and social choice this idea is essentially confused we cannot determine whether a choice function is consistent without referring to something external to choice e g objectives values the standard results have to be reexamined in this light kenneth j arrow s general possibility theorem is extended in this paper without demanding any internal consistency of social choice or any notion of social rationality copyright 1993 by the econometric society

hourly payment and volunteering the effect of organizational practices on decisions about time use we examine how organizational practices making an economic evaluation of time salient such as hourly pay can lead people to spend less time on uncompensated work volunteering using nationally representative survey data in study 1 we showed that with other factors that might affect time decisions controlled people paid by the hour were both less likely to volunteer and spent less time volunteering than counterparts who were not paid hourly study 2 showed that having people calculate their hourly wage was associated with decreased willingness to volunteer and that this experimental manipulation only affected people not paid by the hour because work organizations are typically institutionalized in every sense of that term scott 1995 with their management practices often assuming a taken for granted quality e g zucker 1977 people can learn decision rules and ways of thinking at work that they may then take with them into other spheres of their lives specifically people may develop a particular psychology of time and come to make different decisions about time use depending on the management practices relevant to the evaluation of time to which they are exposed although we believe that management practices and the dimensions of decisions about time that they may affect are many we begin our inquiry by focusing on the effects of hourly payment on the decision to volunteer time we argue that being paid by the hour almost inevitably makes salient an economic frame for the evaluation of time being compensated on an hourly basis predisposes people to assess how they spend their time in terms of the monetary returns from their decisions e g evans barley kunda 2004 we further argue that this monetary or economic frame surrounding time use is particularly relevant for decisions about work and work like activities in this article we focus on volunteering a theoretically important class of work that is freely undertaken without remuneration tilly tilly 1994 because volunteering has been defined as work done without pay it is logical to argue that to the extent that the practice of hourly payment increases the salience of the economic evaluation of time people paid by the hour should be less willing to volunteer and should volunteer less of their time than those not paid by the hour we used a large nationally representative survey with numerous control variables as well as an experiment in which people calculated their hourly wage to illustrate the effect of the framing of compensation on decisions about time use

causes of noncompliance with international law a field experiment on anonymous incorporation using two field experiments we probe the efficacy of international rules mandating that incorporation services establish their customers true identities the standards were designed to prevent anonymous shell corporations central to money laundering corruption and other crimes posing as consultants seeking confidential incorporation we randomly assigned six experimental conditions in emails varying information about monetary reward international and domestic law and customer risk to 1 793 incorporation services in 177 countries and 1 722 u s firms firms in tax havens obey the rules significantly more often than in oecd countries whereas services in poor nations sometimes prove more compliant than those in rich countries only the risk of terrorism and specter of the internal revenue service decrease offers for anonymous incorporation but they also lower compliance offers to pay a premium reduce compliance the risk of corruption decreases response rates but alarmingly also decreases compliance rates raising international law has no significant effect

the impact of charitable subsidies on religious giving and attendance evidence from panel data the literature documents that charitable giving is responsive to tax subsidies but often ignores the spillover effects of such policies this paper investigates the spillover effects of charitable subsidies on religious participation using individual level panel data the results show that religious giving and participation are complements the implied cross price elasticity of religious participation with respect to the after tax price of giving is 0 27 furthermore a 1 increase in the amount of religious contributions is associated with a 0 4 increase in religious attendance these results are robust under several different specifications and highlight the positive externalities created by charitable subsidies

the payoff to work without pay volunteer work as an investment in human capital despite the widespread belief that volunteer work enhances an individual s employment prospects the hypothesis that volunteer work increases one s earnings has

procedural analysis of choice rules with applications to bounded rationality i study how limited abilities to process information affect choice behav ior i model the decision making process by an automaton and mea sure the complexity of a specific choice rule by the minimal number of states an automaton implementing the rule uses to process informa tion i establish that any choice rule that is less complicated than utility maximization displays framing effects i then prove that choice rules that result from an optimal trade off between maximizing utility and minimizing complexity are history dependent satisficing procedures that display primacy and recency effects jel d01 d03 dil d83 in 1981 an internal study by american airlines found that travel agents booked the first flight that appeared on their computer screen 53 percent of the time and a flight that appeared somewhere on the first screen almost 92 percent of the time this provided an incentive for american to manipulate the order in which flights were listed on american s sabre computer reservation system which domi nated the market for electronic flight booking allegations by smaller airlines that american and united airlines which owned the second largest computer reserva tion system apollo engaged in such manipulations led the us federal govern ment to regulate screen display in computer reservation systems 1 this example in which the order of the alternatives affects decision making is by no means unique in elections for example being listed first on the ballot increases the likelihood of winning office mainly at the expense of candidates listed in the middle of the ballot 2 in competitions judges tend to award higher

rationalizability learning and equilibrium in games with strategic complementarities we study a rich class of noncooperative games that includes models of oligopoly competition macroeconomic coordination failures arms races bank runs technology adoption and diffusion r d competition pretrial bargaining coordination in teams and many others for all these games the sets of pure strategy nash equilibria correlated equilibria and rationalizable strategies have identical bounds also for a class of models of dynamic adaptive choice behavior that encompasses both best response dynamics and bayesian learning the players choices lie eventually within the same bounds these bounds are shown to vary monotonically with certain exogenous parameters we study the class of noncooperative supermodular games introduced by topkis 1979 and further analyzed by vives 1985 1989 who also pointed out the importance of these games in industrial economics supermodular games are games in which each player s strategy set is partially ordered the marginal returns to increasing one s strategy rise with increases in the competitors strategies so that the game exhibits strategic complementarity 2 and if a player s strategies are multidimensional marginal returns to any one com ponent of the player s strategy rise with increases in the other components this class turns out to encompass many of the most important economic applications of noncooperative game theory in macroeconomics diamond s 1982 search model and bryant s 1983 1984 rational expectations models can be represented as supermodular games in each of these models more activity by some members of the economy raises the returns to increased levels of activity by others in oligopoly theory some models of bertrand oligopoly with differentiated products qualify as supermodu lar games in these games when a firm s competitors raise their prices the marginal profitability of the firm s own price increase rises a similar structure is present in games of new technology adoption such as those of dybvig and spatt 1983 farrell and saloner 1986 and katz and shapiro 1986 when more users hook into a communication system or more manufacturers adopt an interface standard the marginal return to others of doing the same often rises similarly in some specifications of the bank runs model introduced by diamond and dybvig 1983 when more depositors withdraw their funds from a bank it is more worthwhile for other depositors to do the same in the warrant exercise

when labour market rigidities are useful for innovation evidence from german iab firm level data abstract supply side economists made numerous pleas for removing labour market rigidities through structural reforms from a schumpeterian viewpoint however one can argue that labour market rigidities create useful incentives for innovation our estimates on german panel data 2007 2015 support the schumpeterian view using the taxonomy of industries by peneder 2010 we find that evidence of the schumpeterian view is particularly strong in r d intensive manufacturing industries as well as in service industries with high degrees of cumulativeness of knowledge evidence of the schumpeterian view is weaker in low technology industries and in start ups when firms rely more on generally available knowledge rather than on firm specific and tacit knowledge accumulated in the past

are contributions of time and money substitutes or complements abstractthis article empirically investigates the relationship between donations of time and money using canadian tax policy reforms that changed the tax price of charitable donations the 1988 reform where a charitable tax deduction was converted to a credit and the 2000 reform in provincial income taxes provide tax price variations plausibly exogenous to individuals unobserved heterogeneity our estimates on cross price effects imply that individuals make more time donations as the tax price of charitable donations increases and hence money and time donations are substitutes as some theories would imply this contrasts with earlier findings using cross sectional data

the effects of scarcity on cheating and in group favoritism abstract we study the impact of scarcity on cheating and in group favoritism using a two period lab in the field experiment with low income coffee farmers in a small isolated village in guatemala during the coffee harvesting months farmers in this village experience a significant income boost from selling their coffee beans however during the non harvesting months they experience a substantial decline in income inducing a pronounced state of scarcity while other factors remain similar using this distinctive variance in income we first conduct our experiment before the coffee harvest scarcity period we then repeat the experiment with the same group of subjects during the harvest season abundance period first using the fischbacher and follmi heusi 2013 die roll paradigm we find that subjects cheat at high levels in both periods when they are the beneficiaries of the cheating scarcity does not impact this cheating behavior secondly using subjects natural village identity we find significant in group favoritism for cheating in the abundance period which disappears during the scarcity period finally using a dictator game we show that this finding holds even when the cost of favoring an in group member is monetary rather than moral

evidence on the volunteer labor supply of married women 1 introduction in this paper i investigate the volunteer labor supply of married women there are dozens of studies that examine the labor supply of married women and a smaller number that investigate the supply of volunteer labor in general as far as i know there are none that have focused on the supply of volunteer labor by married women i analyze time diary data for the 1970s to consider one main question and three subsidiary questions i what was the direct effect of economic variables after tax wage rate and other income on married women s volunteering both participation and hours ii does the number of children in the family influence the volunteering of married women to the extent that rising wages may induce smaller family size is this an indirect channel that reduces volunteering if one of the motivations for volunteering is to increase the quantity or quality of activities for one s own children the 1970s is an especially interesting time period to examine in the united states as that was the decade that saw the first large increases in married women s labor force participation rates iii are time and donations substitutes or complements for married women iv do the data support the brown and lankford 1992 modeling conjecture concerning a sequence of time allocation decisions as opposed to the gronau model of household time allocation where such decisions are made simultaneously gronau 1986 i find that i the volunteer labor supply for married women is positively sloped and inelastic with an estimated wage elasticity of 0 64 rises in the net wage have a small negative effect on married women s participation in volunteer activities a 25 rise in the net wage is associated with a 1 drop in the probability of volunteering there is a small negative other income from assets and husband s earnings elasticity of volunteer labor supply 0 09 so other sources of income mattered for married women s volunteering in the 1970s the effect of other income on married women s volunteer participation is positive ii having more children increases the probability of volunteering but reduces the number of hours volunteered iii donations of time and money appear to be substitutes overall the elasticity of married women s volunteer hours with respect to the tax price of giving is greater than two the participation effect is again negative this result is tentative because the data are not based on tax return information and i lack good information on cash donations iv there is mixed support for the brown and lankford conjecture the finding of a positive wage elasticity of volunteer labor supply is at odds with the opportunity cost of time interpretation of the wage especially as the finding for other income is also negative implying that volunteer hours are an inferior good substitution and income effects would therefore both be in a negative direction as the net wage rises the results with the sequential specification are sensible and easily interpreted but the key parameter estimate does not quite meet conventional standards of statistical significance increased hours of work decrease married women s participation and hours an added test of the sequential model is less favorable the wage findings suggest that rising wages for women caused a reduced incidence of volunteering among married women but if anything increased the hours of volunteering one possible vehicle for this would be the entry of women into professional careers where volunteering is a normal part of the career another possible explanation is that married women with a loose attachment to volunteering stopped volunteering and those married women with greater attachment to volunteering increased their hours commitments to offset the participation effect the link between children and volunteering is important as an indicator of how much selfinterest is involved in volunteering for example school volunteering may be a way of providing enhanced investment in one s own children where the benefit to others is a by product

does it pay for women to volunteer this article estimates the economic and noneconomic returns to volunteering for prime aged women estimates of a dcdp model indicate that an extra year of volunteer experience increases wage offers by 8 5 in future part time work and by 2 6 in future full time work on average working for free increases lifetime earnings by 16 7 the economic returns to volunteering are more important than the noneconomic returns in increasing lifetime utility the model also reveals an adverse selection mechanism into volunteering that helps explain why reduced form regressions of the returns to working for free will likely be downward biased

an experiment on the pure theory of consumer s behaviour by checking whether consumer demand satisfies the axioms of revealed preference one can test the empirical validity of the neoclassical theory of consumer behaviour however applying the axioms to actual consumer purchase data is difficult if not impossible since it poses serious problems of both a methodological and a practical nature after commenting on the few existing empirical studies in this field we summarise the results from an experimental approach to revealed preference theory data were obtained through a controlled experiment that involved real consumption of the goods chosen we find that most subjects violated the axioms

modes of labor flexibility at firm level are there any implications for performance and innovation evidence for the swiss economy the aim of this study is to define and measure numerical and functional labor flexibility at the firm level and investigate empirically the impact of each of these flexibility modes on performance and innovation measures as well as the interrelationship between them our estimation equation contains besides the classical production factors labor and physical capital information and communication technologies ict capital human capital variables for flexible organizational practices as well as measures for numerical labor flexibility the empirical investigation is based on data for about 1400 swiss firms copyright 2005 oxford university press

the economics of water conserving technology adoption in tunisia an empirical estimation of farmer technology choice economic theory tells us that increases in the relative prices of natural resources should cause farmers to switch to techniques that use fewer farming resources the adoption of resource conserving technology is one possible response that can lead toward a more environmentally sustainable outcome do farmers respond to changes in natural resource prices and quality by adopting available resource conserving technology this article investigates a case study of decisions made by tunisian farmers as to whether or not they should invest in water conserving drip irrigation technology as a function of natural resource prices and quality along with farm and farmer characteristics in contrast to many studies of technology adoption this work uses both the standard revealed preference analysis of who adopts and a direct elicitation of the reasons for adoption or nonadoption by farmers by reviving an ancient methodology the direct question to elicit real preferences from farmers the research goes beyond the restrictive assumptions of the commonly used random utility models the combination of these techniques allows triangulation on the causes of technology adoption and helps insure that the results are more than a statistical artifact excerpt

the stability of social preferences in a low income neighborhood we investigate whether social preferences are stable across contexts using a field population of low income americans we develop and demonstrate a simplified visually based experimental methodology appropriate for this population we show that choices in a laboratory public goods game predict giving in real donation experiments as well as self reported donations and volunteering outside the lab at the same time choices vary systematically by individual characteristics and decision context thus our results provide evidence both for an underlying stable social preference and for the role of context in influencing the expression of that preference

pareto optimal redistribution and private charity abstract when private charity exists and is motivated by utility interdependence a non pareto optimal outcome the free rider problem typically arises nevertheless incremental fiscal redistribution cannot achieve a paretian welfare improvement so long as private charity continues at positive levels donors respond to incremental fiscal redistribution by reducing their voluntary contributions by exactly a dollar for every dollar transferred in this way no net transfer is achieved unless incremental fiscal redistribution is pursued to the point where private contributions have been driven to zero alternatively a net transfer may be achieved by fiscal measures which affect donors marginal incentives to donate

spreading versus concentrating damages environmental policy in the presence of nonconvexities abstract this paper examines the role of nonconvexities in externality control from a policy perspective nonconvexities can arise from a number of sources and can significantly alter the optimal solution to an externality problem for instance it may be socially desirable to concentrate externality damages in one area and prohibit them in another rather than spread the effects of the externality across a number of sites if this solution is optimal a pollution tax will not achieve the social optimum but a system of marketable permits will

do financial bonuses reduce employee absenteeism evidence from a lottery this paper investigates the effectiveness of a lottery based bonus reward system in reducing employee absenteeism starting in june 2002 a dutch manufacturing firm held a monthly lottery for workers who had taken no sick leave in the previous three months and had not previously won the lottery in a given lottery each of seven contestants whose names were randomly drawn received 75 euros the authors find statistically significant differences in absence patterns across groups of workers with different eligibility statuses depending on their attendance records and whether they had previously won one finding is that absenteeism rose among workers who having won already were ineligible for further participation nevertheless and although the reduction in firm wide absence associated with the lottery drifted from 2 4 percentage points to 1 1 percentage points after seven months the authors conclude that the lot tery was of net benefit to the firm a perennial question is how firms can most effectively use financial incentives to motivate workers and thereby boost pro ductivity in this paper we investigate this issue with respect to workplace absenteeism which is a measure of lost productivity 1 we

valuing health care using willingness to pay a comparison of the payment card and dichotomous choice methods this paper compares willingness to pay wtp estimates generated from the dichotomous choice dc and payment card pc approaches in a split sample wtp experiment concerned with allocating scarce health care resources across three health care interventions the dc approach is shown consistently to generate larger welfare estimates than the pc observed difference between pc and dc experiments cannot be explained by the inclusion of non demanders or methods of statistical analysis but may be partly explained by yea saying no evidence of range bias or mid point bias was found with pc responses data were also collected on respondents ordinal rankings of the three interventions and person trade offs ptos neither of these approaches converged with wtp future work must address the decision heuristics individuals employ when responding to valuation experiments

heterogeneous preferences and the individual change to alternative electricity contracts abstract based on data from a large scale computer based survey among more than 3700 citizens in germany this paper empirically disentangles the determinants of the general change of electricity contracts and the specific change from any green or non green to current green electricity contracts within the last ten years our econometric analysis reveals a strong relevance of behavioral factors and individual values and norms for example patience which was measured by an incentivized experiment included in the survey has a significantly positive effect on both general switches to alternative electricity contracts and specific switches to green electricity contracts furthermore trust and less robust social preferences also measured by an incentivized experiment have additional significantly positive effects on the specific change to green electricity contracts our estimation results also imply an important role of political identification i e an ecological policy orientation is strongly significantly positively correlated with the change to green electricity contracts furthermore several household specific factors like relocation decisions as well as socio demographic and socio economic variables like household income are also relevant the empirical analysis thus provides new explanation patterns for the phenomenon that relatively few households regularly change their electricity contracts and specifically switch to green electricity contracts although they have high stated preferences for such changes our insights suggest several directions for policy and electricity suppliers to increase these switching rates for example the high importance of trust for the change to green electricity contracts suggests transparency initiatives of electricity suppliers to decrease concerns against renewable energies

the existence of equilibrium in discontinuous economic games i theory the article presents information about the existence of equilibrium in discontinuous economic games in this paper and its sequel presents study the existence of nash equilibrium in games where agents payoff functions are discontinuous the enquiry is motivated by a number of recent studies that have uncovered serious existence problems in seemingly innocuous economic games in the sequel to this paper authors have explained the utility function in the economic games referred to earlier are neither continuous nor quasi concave however they demonstrate that the payoff functions in mildly modified versions of these constructs exhibit two weaker forms of continuity which together with the requirement of quasi concavity suffice for the existence of an equilibrium from this one may conclude that at least in the modified versions of these models discontinuities in the payoff functions are not the real source of the problem rather it is the failure of the payoff functions to the quasi concave which is responsible for the non existence of equilibrium these observations bear on the existence of nash equilibrium in pure strategies

temporal stability of time preferences abstract the preferences assumed to govern intertemporal trade offs are generally considered to be stable economic primitives though evidence on this stability is notably lacking we present evidence from a large field study conducted over two years with around 1 400 individuals using incentivized intertemporal choice experiments aggregate choice profiles and corresponding estimates of discount parameters are unchanged over the two years and individual correlations through time are high by existing standards however some individuals show signs of instability by linking experimental measures to administrative tax records we showthat identified instability is uncorrelated with both levels and changes in sociodemographic variables

contextual inference in markets on the informational content of product lines context can influence decisions this malleability of choice is usually invoked as evidence that people do not maximize stable preference orderings in a market equilibrium however context conveys payoff relevant information to consumers consequently these consumers rationally violate naive formulations of standard choice theoretic principles i identify informational asymmetries under which apparently anomalous behaviors namely the compromise effect and choice overload arise as market equilibria firms respond to consumers contextual inference in case of the compromise effect a firm may introduce premium loss leaders expensive goods of overly high quality that increase the demand for other goods

rigidities through flexibility flexible labour and the rise of management bureaucracies judging from organisation level survey data we find that organisations employing high shares of flexible workers have higher shares of managers in their personnel this is in line with earlier findings that anglo saxon countries with deregulated labour markets have thicker management bureaucracies than countries with more regulated labour markets of the rhineland style we argue that flexibility in labour markets i e easier firing and higher labour turnover damages trust loyalty and commitment this requires more management and control related research suggests that easy hire and fire is at the cost of organisational learning knowledge accumulation and knowledge sharing thus damaging innovation and labour productivity growth

volunteerism and crowding out canadian econometric evidence volunteers make an important contribution to canadian society the authors address what motivates people to volunteer and whether they respond to government expenditure decisions using a 1987 microdata set and find that while the level of government spending influences the decision to volunteer it has no effect on the number of hours donated furthermore the nature of this relationship depends upon the particular type of government expenditures for instance the number of volunteers contracts when expenditures on certain economy related activities fall while reductions in health care spending bring about an increased number of volunteers

dynamic learning and context dependence in sequential attribute based stated preference valuation questions a hybrid stated preference model is presented that combines the referendum contingent valuation response format with an experimentally designed set of attributes a sequence of valuation questions is asked to a random sample in a mailout mail back format econometric analysis shows greater discrimination between alternatives in the final choice in the sequence and the vector of preference parameters shifts lead and lag choice sets have a structural influence on current choices and unobserved factors induce positive correlation across the responses these results indicate that people learn about their preferences for attributebased environmental goods by comparing attribute levels across choice sets

rationalizing choice with multi self models this paper studies a class of multi self decision making models proposed in economics psychology and marketing in this class choices arise from the set dependent aggregation of a collection of utility functions where the aggregation procedure satises some simple properties we propose a method for characterizing the extent of irrationality in a choice behavior and use this measure to provide a lower bound on the set of choice behaviors that can be rationalized with n utility functions under an additional assumption scale invariance we show that generically at most ve reasons are needed for every mistake

is flexible labour good for innovation evidence from firm level data whether the use of flexible workers is damaging to innovation or not depends on the dominant innovation regime in a sector in sectors with a routinised innovation regime high shares of low paid temporary workers have a negative impact on the probability that firms invest in r d in sectors that tend towards a garage business regime however flexibility has no impact the two innovation regimes differ in the nature of their knowledge base reliance on generally available knowledge or dependence on a firm s historically accumulated knowledge base innovation in the latter regime benefits from longer job durations our results are consistent with findings in macro level studies that coordinated market economies with rigid labour markets have higher labour productivity gains than liberalised market economies

altruism spillovers are behaviors in context free experiments predictive of altruism toward a naturally occurring public good abstract this paper addresses the external validity of experiments investigating the characteristics of altruism in the voluntary provision of public goods we conduct two related experiments that allow us to examine whether individuals who act more altruistically in the context free environment are also more likely to act altruistically toward a naturally occurring public good we find that laboratory behavior can be predictive of contributions toward naturally occurring goods but not in a uniform way in fact parametric measures of altruism do a poor job of predicting which subjects are most likely to contribute to a naturally occurring public good

economic incentives for managing filterable biological pollution risks from trade infectious livestock disease problems are biological pollution problems prior work on biological pollution problems generally examines the efficient allocation of prevention and control efforts but does not identify the specific externalities underpinning the design of efficiency enhancing policy instruments prior analyses also focus on problems where those being damaged do not contribute to externalities we examine a problem where the initial biological introduction harms the importer and then others are harmed by spread from this importer here the externality is the spread of infection beyond the initial importer this externality is influenced by the importer s private risk management choices which provide impure public goods that reduce disease spillovers to others making disease spread a filterable externality we derive efficient policy incentives to internalize filterable disease externalities given uncertainties about introduction and spread we find efficiency requires incentivizing an importer s trade choices along with self protection and abatement efforts in contrast to prior work that targets trade alone perhaps surprisingly we find these incentives increase with importers private risk management incentives and with their ability to directly protect others in cases where importers can spread infection to each other we find filterable externalities may lead to multiple nash equilibria

on the benefits from rigid labour markets norms market failures and social insurance the common view that far reaching labour market deregulation is the only remedy for high european unemployment is too simplistic first the evidence suggests that deeply rooted social customs are