the market value of reducing cancer risk hedonic housing prices with changing information 1 introduction market evidence on the value of a statistical life invariably consists of cross sectional evidence on risks and prices or wages at a point in time if information about the level of risk changes over time and people incorporate this information in a rational manner there will be a corresponding price response on the basis of these temporal changes one can estimate the market price risk tradeoff eliminating many confounding time invariant effects that cannot be controlled for using cross sectional data this paper examines the market response to the release of government information about the level of risk at hazardous waste sites and provides insight into the rationality of this response studies based on experimental evidence and survey data often find that individual beliefs may deviate from objective risk levels 1 people often overestimate highly publicized risks and mortality risks in the case of hazardous waste risks bias in risk beliefs often leads to considerable public reaction and pressure for site cleanups which may be an inefficient outcome by using market data one can examine whether this intense public reaction carries over to contexts in which private money is at stake government agencies frequently use information provision as a regulatory device particularly since the advent of the right to know movement of the 1980s examples of information provision efforts include the food and drug administration s requirement that many prescription drugs indude information inserts the department of housing and urban development s requirement that sellers of houses built before 1950 inform buyers about the presence of lead based paints and the environmental protection agency s epa requirement that manufacturing facilities report their annual releases of chemicals above a threshold amount for a list of over 600 substances such regulations imply a belief that citizens can learn from information about risk and rationally adjust their prior beliefs towards the objective risk level in light of the information this article provides market evidence to bolster the results of some survey studies of information transfer that suggest that individuals revise their risk beliefs in response to new information 2 the u s federal policy dealing with hazardous waste sites is known as the superfund program the most hazardous sites are targeted for cleanup and placed on a government priority roster called the national priorities list npl extension of the classic theory of compensating differentials to the housing market implies that environmental disamenities such as hazardous waste sites will reduce housing prices rosen 1974 the negative impact of hazardous waste sites on the housing prices of nearby residences is well documented for example in a previous study gayer hamilton and viscusi 2000 we used an analysis that focused on the sale of 16 928 houses from 1988 to 1993 that surround superfund sites in greater grand rapids michigan we found that before the epa released its risk report a reduction in the cancer risk from neighborhood superfund sites by the mean level of risk would increase the average value of a house by 238 in 1996 dollars 3 to estimate this willingness of residents to pay to avoid cancer risks before the release of the epa s risk report we assumed that residents prior beliefs were equal to the objectively measured risks suggested by the report thus this analysis was based on the very strong informational assumption that residents could in effect predict the results of the epa s site specific risk assessments before the release of the report the price risk tradeoff implied a value of a statistical cancer case of 51 million once the epa released its risk information the implied value of a statistical cancer case was 4 million these results suggest that after the release of the epa s risk report revealed preferences for avoiding superfund risks were consistent with surveys of the value of a statistical life in the labor market

a review of wta wtp studies abstract willingness to accept wta is usually substantially higher than willingness to pay wtp these constructs have been studied for roughly 30 years and with a wide variety of goods this paper reviews those studies we find that the less the good is like an ordinary market good the higher is the ratio the ratio is highest for non market goods next highest for ordinary private goods and lowest for experiments involving forms of money a generalization of this pattern holds even when we account for differences in survey design ordinary goods have lower ratios than non ordinary ones we also find that ratios in real experiments are not significantly different from hypothetical experiments and that incentive compatible elicitation yields higher ratios

the structure of citizen attitudes and the european political space a common concern regarding the viability of institutional reform of the eu is whether european citizens constitute a political community that facilitates democratic governance one important aspect of this concern is whether public perceptions are structured so as to ease or impede political discourse across europe to investigate this question the authors examine whether the eu mass public organizes its attitudes toward eu policy issues in systematic and meaningful ways specifically they examine whether eu citizens attitudes across a broad range of policies decided at the eu level are structured consistently with several prominent models of the eu policy space using eurobarometer data the authors show that citizens policy positions on eu issues are systematically organized along a single dimension that is different from domestic left right

asymmetries in ordered strength of preference models implications of focus shift for discrete choice preference estimation this paper explores potential focus shift asymmetries in an ordered strength of preference model applied to contingent choice data a focus shift occurs when respondents weight factors differently when assessing preference for an accepted scenario than they do when assessing preference for a rejected scenario and may imply that respondents do not refer to a single underlying preference function using data drawn from a survey which addressed preferences for watershed management the model results identified focus shift asymmetries in the ordered strength of preference model the paper discusses implications for policy survey design and discrete choice preference estimation

carcinogen regulation risk characteristics and the synthetic risk bias why does the government regulate different kinds of risks economists usually trace the motivation for the regulation to the existence of some form of market failure in such instances it will be desirable to regulate substances for which the benefits of the regulation exceed the costs which will potentially be the case if there is some inadequacy in the market the restrictive legislative mandates of regulatory agencies in some cases prohibit basing regulations on a balancing of benefits and costs and at the very least seldom encourage such balancing 1 as a result one would expect the benefits of regulatory efforts to play a greater role in regulatory decisions than do the costs 2 this pattern is exemplified by the high implicit values per statistical life that have been observed for u s regulatory efforts 3 regulatory agencies consequently tend to be risk oriented in their policy approach what this characterization neglects is that even within the context of emphasizing risks regulatory agencies may not be making balanced decisions the risk level consists of two principal components the probability of an adverse outcome and the number of people affected the probability depends on the potency of the exposure the frequency of the exposure and similar kinds of parameters regulatory agencies are generally concerned with the risk particularly with respect to the potency of the chemicals in contrast the number of people exposed to the risk plays a much less prominent role in regulatory decisions the standard regulatory policy trigger is typically linked to a probability of an adverse outcome as opposed to an expected body count the u s environmental protection agency superfund program is a case in point in that effort the focus is on the risks posed by different pathways by which populations could be exposed to the hazard in the course of the detailed policy analysis prepared for each superfund site epa never assesses the size of the population exposed to the risk moreover there is not even an assessment of the probability that a future population will be exposed to the risk the presence of a risk with a potential exposure to a future population is sufficient to trigger government action extrapolation from this experience to other instances would lead one to expect that the probability of cancer or some other adverse health outcome would be the driving force behind regulatory decisions however even this characterization may be overly broad in this paper i will explore the decision to regulate natural and synthetic chemicals to what extent are regulatory decisions driven by the severity of the risk as opposed to the character of the risk exposure the striking result is that the risk severity dlavs a very small role instead tdiscussants maureen cropper world bank don kenkel pennsylvania state university tyler cowen george mason university

a test of the theory of reference dependent preferences eight alternative methods of eliciting preferences between money and a consumption good are identified two of these are standard willingness to accept and willingness to pay measures these methods differ with respect to the reference point used and the dimension in which responses are expressed the loss aversion hypothesis of tversky and kahneman s theory of reference dependent preferences predicts systematic differences between the preferences elicited by these methods these predictions are tested by eliciting individuals preferences for two private consumption goods the experimental design is incentive compatible and controls for income and substitution effects the theory s predictions are broadly confirmed

risk self protection and ex ante economic value abstract we develop three propositions about the ex ante value of reduced risk if there is a continuous outcome distribution and if self protection influences outcome probability and severity then 1 unobservable utility terms cannot be eliminated from the ex ante value expressions 2 knowledge of the convexity or the nonconvexity of dose response functions is insufficient to sign changes in these expressions and 3 self protection expenditures need not be a lower bound measure of these expressions therefore many restrictions applied in recent empirical work on the economic value of risk changes are not immediately transferable to settings where endogenous risks prevail

subjective versus technical risk estimates do risk communication policies increase consistency abstract this paper reports the first comparison of subjective and technical risk estimates for a real source of risk exposure to radon the analysis also considers the effects of the information framing for this comparison of risk estimates the results suggest that the framing of the risk explanations does affect how individuals adjusted their subjective risk perceptions in response to differences in the amount and duration of their radon exposures thus our findings support the need to describe the role of cognitive factors involved in processing risk information within economic models of the formation of risk perceptions

understanding household energy use decision making and behaviour in guinea conakry by applying behavioural economics abstract for decades generalized frauds have left the electrical sector of guinea with an entirely defective financial scheme as a developing nation guinea s electricity consumption has been relatively low for a long time although it has been increasing recently due to increasing power generation the growth in power capacity is due to the construction of two new dams kaleta dam 240 mw which is already operational and souapiti dam 550 mw which is still under construction taking into account that the country has so far been without electricity there is a need to assess and predict consumer behaviour before the full completion of these projects the aim of this study is to make the household and community reactions to public policy interventions less surprising however even sufficient knowledge of how to conserve energy and a stated desire to do so many consumers still fail to take perceptible measures to increase energy efficiency and conservation why is this so by focusing on crucial insights from behavioural economics and psychology we highlight the incentive factors the basic cognitive biases and the psychological phenomena that cause this disconnect understanding these factors can help us to design sustainable energy use among consumers in guinea conakry

household energy use applying behavioural economics to understand consumer decision making and behaviour household energy conservation has emerged as a major challenge and opportunity for researchers practitioners and policymakers consumers also seem to be gaining greater awareness of the value and need for sustainable energy practices particularly amid growing public concerns over greenhouse gas emissions and climate change yet even with adequate knowledge of how to save energy and a professed desire to do so many consumers still fail to take noticeable steps towards energy efficiency and conservation there is often a sizeable discrepancy between peoples self reported knowledge values attitudes and intentions and their observable behaviour examples include the well known knowledge action gap and value action gap but neither is household energy consumption driven primarily by financial incentives and the rational pursuit of material interests in fact people sometimes respond in unexpected and undesirable ways to rewards and sanctions intended to shift consumers cost benefit calculus in favour of sustainable behaviours why is this so why is household energy consumption and conservation difficult to predict from either core values or material interests by drawing on critical insights from behavioural economics and psychology we illuminate the key cognitive biases and motivational factors that may explain why energy related behaviour so often fails to align with either the personal values or material interests of consumers understanding these psychological phenomena can make household and community responses to public policy interventions less surprising and in parallel can help us design more cost effective and mass scalable behavioural solutions to encourage renewable and sustainable energy use among consumers

measuring benefits from air pollution control where do we stand measuring the benefits from reduced morbidity this paper presents a simple model of preventive health care similar to that of grossman 1972 and uses the model to define what a person would pay for a change in air quality the model assumes that one can build up resistance to acute illnes by increasing his stock of health capital however health capital decays at a rate which depends on air pollution for acute illness willingness to pay as derived from the model is greater than the benefit estimate computed using the damage function approach to illustrate the size of this discrepancy estimates of willingness to pay are computed using data from the michigan panel study of income dynamics the case for government providing information about risks rests secure in the theory of public goods informational scale economies and problems of dissemination conceivably call for a principal agent relationship in which certain types of decisions are delegated to the agency however the setting of standards and prohibitions is too simplistic it seldom recognizes that personal action tends to interact with and partially offset them 8 references

rejecting small gambles under expected utility this paper contributes to an important recent debate around expected utility and risk aversion rejecting a gamble over a given range of wealth levels imposes a lower bound on risk aversion using this lower bound and empirical evidence on the range of the risk aversion coefficient we calibrate the relationship between risk attitudes over small stakes and large stakes gambles we find that rejecting small gambles is consistent with expected utility contrary to a recent literature that concludes that expected utility is fundamentally unfit to explain decisions under uncertainty paradoxical behavior is only obtained when calibrations are made in a region of the parameter space that is not empirically relevant

risk perception in psychology and economics abstract the concept of rationality has been basic to most economic analysis its content has been successively refined over the generations as applied to the static world of certainty it has turned out to be a weak hypothesis not easily refuted and therefore not very useful as an explanation though not literally a tautology but recent decades have seen the development of stronger versions applied to a world in which time and uncertainty are real among its most important manifestations have been criteria for consistency in allocation over time the expected utility hypothesis of behavior under uncertainty and what may be termed the bayesian hypothesis for learning that is the consistent use of conditional probabilities for changing beliefs on the basis of new information these hypotheses have been used widely in offering explanations of empirically observed behavior though as not infrequently in economics the theoretical development has gone much further than the empirical implementation these hypotheses have also been used increasingly in normative analysis as a component of benefit cost studies therefore frequently referred to as benefit risk studies the value of reducing mortality rates from diseases for example has been studied by assuming that choice of occupations is made inter alia by comparing wage differences with mortality differences

risk risk versus standard gamble procedures for measuring health state utilities contingent valuation cv has been widely used to measure the potential benefits derived from different policy decisions however doubt now exists about the validity of the cv method and alternative approaches to benefit valuation have been proposed the paper reports on the results of a study which was designed to test the viability of two of the most prominent of the alternatives the risk risk rr and standard gamble sg approaches if individual preferences are consistent with the axioms of von neumann morgenstern expected utility theory eut then the two methods should generate the same interval scales for any given set of health states however the results show that sg utilities are substantially higher than rr ones thus casting doubt on these axioms the paper discusses alternatives to eut which might better expalin the discrepancies found it also considers whether the results might be explained in terms of status quo bias and or by the relative difficulty of rr questions the results presen

an investigation of the rationality of consumer valuations of multiple health risks after developing a conceptual analysis of consumer valuation of multiple risks we explore both economic and cognitive hypotheses regarding individual risk taking using a sample of over 1 500 consumers our study ascertains risk dollar tradeoffs for the risks associated with using an insecticide and a toilet bowl cleaner we observe the expected positive valuation of risk reductions and find empirical support for a diminishing in the valuation of risk reduction as the extent of the risk reduction increases we also find evidence of certainty premiums for the total elimination of one risk but no strong evidence of additional certainty premiums for the elimination of multiple risks strong reference risk effects are evident as increases in risk were valued much more greatly than were decreases

a micro econometric analysis of risk aversion and the decision to self insure this study estimates a von neumann morgenstern utility function using market data and micro econometric methods we investigate the decision whether to purchase insurance against the risk of telephone line trouble in the home using the choices of approximately 10 000 residential customers we determine the shape of the utility function and the degree of risk aversion we find that risk aversion varies systematically in the population and varies with the level of income and that the observed choice behavior is consistent with expected utility maximization we are unable to detect the presence of ambiguity effects or over weighting of low probability events

comorbidities and the willingness to pay for health improvements we show that the willingness to pay for health improvements increases with the severity and probability of occurrence of comorbidities this result which is obtained under mild restrictions on the shape of the utility function has important implications for cost benefit studies applied to health care in particular it implies that the discrimination of the elderly believed to be implicit in cost benefit analysis is less of a problem than commonly thought

parental behavior and the value of children s health a health production approach data on individual children and on sibling pairs are used to examine how family resource allocations affect children s health and to estimate willingness to pay for reduced acute illness in children results highlight the importance of accounting for the endogeneity of child health and suggest that children with greater stocks of health capital whose parents invest in preventive and remedial medical care experience fewer days of illness estimated willingness to pay to avoid one day of illness induced school loss is about 100 to 150 a range broadly consistent with limited prior evidence but sub stantially more than unit values applied in recent policy analyses all else equal willingness to pay is higher among single parents and for uninsured children and the estimated income elasticity is only 0 14 implied aggregate benefits of reductions in children s sick time associated with air pollution control may be substantial

public control of rational and unpredictable epidemics abstract efforts to improve disease forecasting are often justified on the grounds that accurate and reliable forecasts offer opportunities to improve response to epidemics yet little is known about how disease forecasts influence the responsiveness to public health interventions this paper couples an optimal stopping model and rational disease prevention with a stochastic compartmental epidemiological model of disease spread to develop a framework for evaluating the timing of public health interventions in response to rational but unpredictable epidemics optimal behavior by a public health agency is characterized by a pair of critical prevalence thresholds that trigger implementation and suspension of a public prevention program unlike existing economic thresholds for disease prevention our decision thresholds account for time varying probabilities of different levels of infection prevention by private individuals and the likelihood of crossing epidemiological thresholds that determine disease persistence

income effects and the value of health although valuations of risk should increase with income hedonic wage studies have not been well suited to assessing this relationship using survey data on consumer valuations of product safety this paper analyzes the role of income effects for several utility functions the methodology developed in this paper assesses the effect of income on the certainty equivalent value of the health effect income elasticities range from 0 18 to 0 39 and on the risk money tradeoff for small changes in risk income elasticities range from 0 17 to 0 38 health status is a normal economic good

is the yen dollar exchange rate really responsible for east asia s export and business cycles a commentary on mckinnon and schnabl 2003 in a paper published in the world economy ronald mckinnon and gunther schnabl claim that fluctuations in the nominal yen dollar exchange rate are the principal causal factor behind the export and business cycles in east asian countries mckinnon and schnabl 2003 their econometric work however suffers from at least two important difficulties first while mckinnon and schnabl preclude industry shocks as an explanation for the east asian countries macroeconomic fluctuations cyclical fluctuations in the global electronics industry have a significant impact on their short run export and output dynamics second although mckinnon and schnabl assume that the relative industrial competitiveness of japan and other east asian countries moves in tandem with fluctuations in the nominal yen dollar exchange rate the empirical validity of this assumption is not indisputable once these two issues are taken into account properly it becomes very difficult to make a convincing case for the yen dollar exchange rate being the main driver of east asia s macroeconomic instability a brief critique will also be made of another paper that has appeared recently in the world economy doraisami 2004 which models malaysia s pre crisis export dynamics using the nominal yen dollar exchange rate as a proxy for the country s export competitiveness

measurement of consumer patient preferences using a hybrid contingent valuation method this study introduces a hybrid two stage contingent valuation method applied to asthma treatment respondents are initially offered a choice between hypothetical medications implying a tradeoff between safety and efficacy stage two elicits willingness to pay wtp for an improvement along a single risk dimension estimates of the value of asthma control based on the initial risk tradeoff stage range from approximately us 1400 to us 2100 per year assuming a us 6 million value of life analysis of the second stage wtp responses yield estimates for the value of a statistical life of approximately us 9 million and for asthma control of approximately us 2200 per year

the demand for a malaria vaccine evidence from ethiopia this study measures the monetary value households place on preventing malaria in tigray ethiopia we estimate a household demand function for a hypothetical malaria vaccine and compute the value of preventing malaria as the household s maximum willingness to pay to provide vaccines for all family members this is contrasted with the traditional costs of illness medical costs and lost productivity our results indicate that the value of preventing malaria with vaccines is about us 36 per household per year or about 15 of imputed annual household income this is on average about twice the expected household cost of illness

synchronized business cycles in east asia and fluctuations in the yen dollar exchange rate because many authors have proposed stimulating the ailing japanese economy by monetary expansion and yen depreciation we explore the repercussions of depreciating the yen against the dollar on the other east asian economies which largely peg to the dollar since 1980 economic integration among japan s neighbors china hong kong indonesia korea malaysia philippines singapore and thailand has intensified and except for china their business cycles have been highly synchronized these cycles have been closely linked to fluctuations in the yen dollar exchange rate through changes in their export competitiveness and inflows of foreign direct investment we show that a major yen devaluation would have a negative impact on incomes in other east asian economies and that it is not a sensible policy option for japan

alarmist decisions with divergent risk information receipt of multiple sources of risk information ideally should foster sounder decisions under uncertainty this paper s original survey results for environmental risks suggest that the learning process is reasonable in many respects bur it does not accord with a rational bayesian learning model divergent risk assessments from different sources produce extreme violations of rationality as there is inordinate weight on the high risk assessment this alarmist reaction holds for both government and industry information sources this phenomenon may account for the commonly observed phenomenon of public overreaction to highly publicised risks

long term care utility and late in life saving older wealth holders spend down assets much more slowly than predicted by classic life cycle models this paper introduces health dependent utility into a model with incomplete markets in which pre

parental altruism and the value of avoiding acute illness are kids worth more than parents abstract a model describing parents preferences to relieve their own and their children s acute illnesses is estimated using stated preference data estimated marginal rates of substitution mrs between child and parent illness are about two indicating that parents value children s illness attributes twice as highly as their own the mrs is larger for younger children falls toward unity as the child approaches adulthood and appears to reflect parental altruism rather than parent child differences in initial health or illness costs intra family allocations may compensate for chronic health impairments parents willingness to pay to avoid own or child illness increases with income declines with fertility increases at a decreasing rate with duration and number of symptoms and depends on perceived discomfort and activity restrictions current methods of assessing morbidity benefits of environmental regulations may understate substantially the value of children s health particularly in african american families

predicting buyer seller pricing disparities numerous studies have shown that compensation demanded cd to give up a commodity often greatly exceeds willingness to pay wtp to obtain the same commodity even in incentive compatible experiments that penalize strategic misrepresentation observed cd wtp disparities are too large to be reconciled with traditional assumptions of economic rationality a prospect theory based behavioral framework for predicting cd and wtp is proposed which produces five distinct transaction encoding rules any one of which can in principle apply to a buyer or a seller according to this framework cd wtp gaps occur when buyers and sellers encode the prospective transaction differently and gaps can occur in multiple ways and vary in size depending on encoding the transaction encoding framework was tested in two experiments in experiment 1 model fits to subjects cd and wtp for lottery tickets were consistent with the hypothesis that buyers and sellers encode transaction problems differently moreover the quite large observed cd wtp gaps were explained fully by encoding when differences between buyers and sellers encoding processes were taken into account their estimated utility value and probability weighting functions did not differ the present framework and results show that the widely cited endowment effect is but one of several ways in which loss aversion can give rise to cd wtp gaps consistent with this broadened perspective experiment 2 demonstrated cd wtp gaps in the absence of an endowment effect and in the absence of rational economic causes the transaction encoding framework 1 provides a structured approach for predicting and testing the effects of a variety of task factors on pricing behavior and transaction outcomes and 2 reveals the useful property that in many cases the ratio cd wtp can be interpreted as a direct measure of the degree of loss aversion

health and consumption preferences estimating the health state dependence of utility using equivalence scales abstract this paper estimates health state dependence of utility in europe for identification we introduce a new method using insights from the research domain of living standards we estimate how much extra or less income is needed to maintain the same level of material wellbeing after a health shock and we derive a simple relation between this estimate and the health state dependence parameter the results show positive health state dependence this is not driven by medical expenditures and is robust across alternative specifications and health measures interestingly for cognitive limitations we find negative health state dependence presumably resulting from a decreased ability to plan

household labor supply and the gains from social insurance the marginal gains from social income insurance programs are captured by the gap in the marginal utility of consumption across states of nature to identify this gap in the context of the household this paper offers a new labor supply based approach that leverages household level economic interactions and optimality conditions we demonstrate that in frameworks of efficient household allocations spousal labor supply responses to shocks have direct implications for the gains from more generous government benefits to households we show that this holds for both intensive and extensive margin responses under fairly general conditions our analysis illustrates how labor market data can be used for assessing marginal welfare gains in a general class of social insurance schemes including the large and important programs of disability insurance and survivors benefits hence household labor supply behavior and responses to shocks which are widely studied in theoretical and empirical work hold valuable information for the optimal design of social insurance

formation of risk beliefs joint production and willingness to pay to avoid skin cancer this paper uses a survey of risk beliefs about skin cancer to provide new evidence on how people view risky situations empirical results presented are based on a measure of risk beliefs held at the time of the survey key findings are that risk beliefs about skin cancer account for factors including skin type complexion and sunlight exposure history also the connection between risk beliefs and willingness to pay is explored by using reservation prices for a sun protection product a new method for treating joint production in a household production framework is developed to support this analysis copyright 1996 by mit press

utility based measures of health mates the scope of this debate is inherently limited market estimates can provide information only on the average rate of trade off of income for risks these trade offs are also pertinent only to marginal changes in risk important policy questions such as the benefits of nonmarginal changes in risks or the benefits of risk reductions in heterogenous populations cannot be adequately explored with results from market settings the increased availability of survey data has brought these and many other questions regarding individual valuation of health risks within the range of answerable inquiries in a standard survey setting consumers are faced with a series of hypothetical choices for which subjects give a probability or an income value that makes them indifferent between the lotteries an es

altruism fertility and the value of children health policy evaluation and intergenerational welfare abstract this paper accounts for the value of children and future generations in the evaluation of health policies this is achieved through the incorporation of altruism and fertility in a value of life type of framework we are able to express adults willingness to pay for changes in child mortality and also to incorporate the welfare of future generations in the evaluation of current policies our model clarifies a series of puzzles from the literature on the value of life and on intergenerational welfare comparisons we show that by incorporating altruism and fertility into the analysis of the recent u s experience the estimated welfare gain of a young adult from reductions in mortality easily doubles

estimation of state dependent utility functions using survey data surveys of individual s risk dollar trade offs illuminate not only the local trade off rates but also can be used to address more fundamental questions about the structure of utility functions this largely unexplored empirical area is investigated by developing an econometric technique to estimate utility functions based on survey data on risk dollar trade offs for minor health effects the empirical tests indicate that for all but one of the temporary health effects considered consumers treat injuries as tantamount to a drop in income implying that the health impact does not alter the structure of the utility function in a fundamental way copyright 1991 by mit press

valuing the incremental benefits of groundwater protection when exposure levels are known both economic theory and psychological research indicate that benefit functions for reductions in health risk exposures may be conditional on current exposures using nitrates found in household wells it is demonstrated that perceptions of health risks across exposure levels are affected by the individual s current exposure level thus providing support for a conditional benefits function approach functions of conditional incremental benefits are estimated from a contingent valuation study of households that had been informed of their water test results incremental benefits reach a peak at an intermediate level of nitrates and then decline possible explanations for this non convexity are provided

are risk preferences stable across contexts evidence from insurance data using a unique dataset we test whether households deductible choices in auto and home insurance reflect stable risk preferences our test relies on a structural model that assumes households are objective expected utility maximizers and claims are generated by household coverage specific poisson processes we find that the hypothesis of stable risk preferences is rejected by the data our analysis suggests that many households exhibit greater risk aversion in their home deductible choices than their auto deductible choices our results are robust to several alternative modeling assumptions jel d11 d83

public opinion toward immigration in the european union does it matter the literature on immigration has been divided with regard to the constraints particularly of public opinion on eu policy cooperation analysts have suggested that there is a disjuncture between

the utility of health and wealth abstract tradeoffs between health and wealth are among the most important decisions individuals make and are central to social and economic policy yet only a few studies have investigated the utility of health and wealth empirically this paper investigates this utility function both theoretically and empirically we conduct detailed personal interviews with 180 cancer patients and also obtain questionnaires from 132 diabetes patients we find strong support for the utility function u h w h log w where h denotes health and w denotes wealth

measuring multivariate risk preferences in the health domain we investigate univariate and multivariate risk preferences for health longevity and wealth we measure attitudes toward correlation and attitudes toward higher order dependence structures such as cross prudence and cross temperance making use of the risk apportionment technique proposed by eeckhoudt et al 2007 for multivariate gains we find correlation aversion and cross prudence in longevity and wealth for losses we observe correlation seeking and cross imprudence we do not find clear evidence for cross temperance our results indicate that longevity and wealth are considered to be substitutes for gains but not for losses second univariate higher order risk preferences are comparable for longevity and wealth although somewhat closer to linearity for wealth third we find evidence that attitudes toward dependence structures in the health domain are sign dependent

are risk regulators rational evidence from hazardous waste cleanup decisions a large literature in economics and social science focuses on how people reason about risks reactions of individuals to risk frequently depart from behavior predicted by full information variants of expected utility theory risk regulators are human and are subject to political pressures that are reflective of people s attitudes toward risk as a result the public policies they espouse may reflect errors in judgment about risk many biases stem from misperceptions of risk individuals overestimate small probabilities overestimate the risks associated with highly publicized dangers and have preferences over the manner not just the magnitude in which risks arise environmental risks associated with hazardous waste sites may be particularly prone to such errors since they involve small risks that are highly publicized indeed the general public ranks hazardous waste sites as the leading environmental risk a growing literature also analyzes how the decisions of risk regulators depart from choices predicted in a standard benefit cost framework as roger g noll and james e krier 1990 point out since regulators are both human and political their decisions may reflect risk biases regulators may exhibit these biases as individuals and because their constituents will express regulatory demands based on risk perceptions risk regulators may take into account the identity of the parties exposed to risk the level of scrutiny by interest groups the nature of congressional representation of affected constituents and the degree of political activity by potentially exposed individuals 3 errors in risk perceptions and risk decisions cause individuals to diverge from expected utility maximization similar errors by policy makers and the influence of risk politics cause regulators to diverge from social welfare maximization this paper examines decisions made by federal and state regulators at hazardous waste sites addressed by the superfund program to determine how their decisions diverge from those predicted by expected utility theory and benefitcost analysis we analyze whether risk perceptions and politics influence two decisions central to the how clean is clean debate at superfund sites the selection of chemical cleanup targets and the expenditure of remediation funds at these contaminated sites we also explore the interactive influence of risk perception factors and political demands previous research on the regulation of chemical risks in standard setting indicates that decisions reflect evidence of risk biases and responsiveness to political factors in assessing the determinants of the epa s decision to cancel pesticide registration maureen l cropper et al 1992 found that the epa was more likely to cancel a pesticide in instances featuring higher risks to the maximally exposed individual user lower benefits associated with continued use of the pesticide higher values of intervention by environmental groups mea viscusi harvard law school harvard university cambridge ma 02138 hamilton sanford institute of public policy duke university durham nc 27708 we have benefited from the comments from two referees and the excellent research assistance of jason bell kristen blann jahn hakes and robert malme research support was provided under cooperative agreement no cr 823604 01 from the u s environmental protection agency office of policy planning and evaluation dr alan carlin and dr suzanne giannini spohn served as contract officers all views and errors expressed are our own l see u s environmental protection agency epa 1987 for a report on this survey evidence 2 this theme is also articulated in richard j zeckhauser and viscusi 1990 noll 1989 provides a more general assessment of the interaction between political concerns and regulatory policy which is a central theme of this paper 3political factors have long played a prominent role in local hazardous waste policies see among others linda cohen 1981 howard kunreuther and douglas easterling 1990 1992 and kunreuther and rajeev gowda 1990

the interaction of public and private insurance medicaid and the long term care insurance market a long tradition in public finance examines how public programs can crowd out private activ ity in areas as diverse as education savings and insurance among others these studies typi cally focus on aggregate economic implications particularly for government expenditures and national savings in this paper we demonstrate that crowd out can also have an important effect on individual welfare specifically we show that the provision of even very incomplete public insurance can crowd out more comprehensive private policies by imposing a large implicit tax on private insurance benefits thus potentially increasing overall risk exposure for individuals we examine the interaction of public and private insurance for one of the largest uninsured financial risks facing the elderly in the united states long term care expenditures at 135 bil lion in 2004 long term care expenditures represented over 8 5 percent of total health expendi tures or all ages or roughly 1 2 percent of gdp moreover real long term care expenditures are projected to triple over the next 35 years due to rising medical costs and the aging of the baby boomers only 10 percent of the elderly however have any private long term care insurance and one third of expenditures are paid for out of pocket congressional budget office cbo 1999 cbo 2004 brown and finkelstein 2007 one potential explanation for the small size of the private market is that the public insurance provided by medicaid may crowd out demand for private insurance medicaid was designed to provide long term care insurance for the poor elderly mark v pauly 1989 1990 has established the qualitative result that as an incomplete but publicly funded source of long term care insur ance medicaid has the potential to reduce substantially demand for private long term care insur ance even among the nonpoor our work builds on this insight by quantifying the magnitude of medicaid s crowd out effect and the incomplete nature of medicaid coverage we also illustrate the mechanism behind medicaid s crowd out effect and are therefore able to assess the likely impact of alternative policies on private insurance demand we develop a utility based model of a 65 year old risk averse individual who chooses an opti mal intertemporal consumption path in the presence of uncertainty about long term care expen ditures we calibrate the model using data on the distribution of long term care expenditure risk common state medicaid rules and the prices and coverage of typical private long term care insurance policies

estimating risk preferences from deductible choice we develop a structural econometric model to estimate risk preferences from data on deductible choices in auto insurance contracts we account for adverse selection by modeling unobserved heterogeneity in both risk claim rate and risk aversion we find large and skewed heterogeneity in risk attitudes in addition women are more risk averse than men risk aversion exhibits a u shape with respect to age and proxies for income and wealth are positively associated with absolute risk aversion finally unobserved heterogeneity in risk aversion is greater than that of risk and as we illustrate has important implications for insurance pricing

valuing changes in health risks a comparison of alternative measures essential to efficient provision of health safety and the environment is correct valuation of risks to human health in a world of scarcity difficult decisions concerning tradeoffs between health and other desirables are unavoidable in this paper we develop a model of health investment under uncertainty which yields a general expression for values of changes in risks to human health the preference based values of morbidity risks and mortality risks are ex ante dollar equivalents of changes in expected utility associated with risk changes the preference based values are related to two alternative measures costs of illness and preventive expenditures which are thought to be lower bounds on the value of risk reductions we demonstrate that these alternative measures are not even special cases of the more general measure and that the size relationships among the three measures are complex also we derive the relationship between the willingness to pay for risk changes and the consumer surpluses associated with health changes which occur with certainty the next section contains a brief review of the approaches to valuing changes in health

are individuals bayesian decision makers there has been increasing interest in whether normative models of individual choice under uncertainty accord with actual behavior these concerns have been much greater than in other economic contexts because of the particularly severe demands such decisions place on the rationality of the decision maker the limitations of these decisions have widespread consequences as they provide the rationale for many governmental efforts to regulate the risks people face here i explore the issues raised by a bayesian decision framework focusing particularly on my analyses of worker and consumer behavior

trade causes of the asian crisis the malaysian experience prior to the onset of the asian financial crisis there was a deterioration in the external trade position of most countries that were affected by the asian currency crisis however little is known about why this occurred this paper aims to identify the causes of a slowdown in export growth in malaysia while misaligned exchange rates have been widely cited as a cause of the slowdown in east asia in the malaysian context at least a vulnerability to the downturn in the electronic cycle could also be a major factor leading to poor export performance using the us yen dollar rate as a proxy for exchange rate misalignment and us total new orders for electronics as a proxy for global electronics demand cointegration analysis was used to establish the likely causes of a slowdown in malaysia s export performance the empirical evidence suggests that the coincidence of exchange rate misalignment with a downturn in the global electronics demand cycle was responsible for the sharp deterioration in export performance

willingness to pay and compensation demanded experimental evidence of an unexpected disparity in measures of value aside from possible income effects measures of the maximum amounts people will pay to avoid a loss and the minimum compensation necessary for them to accept it are generally assumed to be equivalent unexpectedly wide variations between these sums however have been noted in survey responses to hypothetical options this paper reports the results of a series of experiments that confronted people with actual money payments and cash compensations the results indicate that the compensation measure of value seems to exceed significantly the willingness to pay measure which would appear to call into some question various rules of entitlement damage assessments and interpretations of indifference curves

racial prejudice and labour market penalties during economic downturns do economic downturns encourage racist attitudes does this in turn lead to worse labour market outcome for minorities we assess these important questions using british attitude and labour force data the attitude data show that racial prejudice is countercyclical with the effect driven by large increases for high skilled middle aged working men a 1 point increase in unemployment is estimated to increase self reported racial prejudice by 4 points correspondingly the labour force data show that racial employment and wage gaps are counter cyclical with the largest effects also observed for high skilled men especially in the manufacturing and construction industries a 1 point increase in unemployment is estimated to increase the wage gap by 3 these results are entirely consistent with the theoretical literature which proposes that racial prejudice and discrimination are the result of labour market competition among individuals with similar traits and that the effects of this competition are exacerbated during periods of economic downturn

a new meta analysis on the wtp wta disparity abstract this study reports a new meta analysis of papers that elicit willingness to pay wtp and willingness to accept compensation wta measures of value for the same good we investigate the effects of type of good and several survey design features on the wtp wta disparity measured as the logarithm of the ratio of mean wta to mean wtp confirming horowitz and mcconnell s 2002 pioneering meta analysis we find the disparity is smaller for ordinary private goods than for public and non market goods that it is not solely an artifact of using hypothetical transactions or other weak experimental or survey methods and that it is smaller for studies using student subjects in addition we find that the disparity is smaller when subjects have experience valuing the good in real markets or through repeated experimental trials in contrast to horowitz and mcconnell we find the disparity is significantly smaller in studies using incentive compatible elicitation mechanisms the disparity is smaller in more recent studies an effect that is attributable only in part to changes in study characteristics

the role of responsibility in strategic risk taking we explore play between groups where one member of each 2 person group dictates the play of that group and is therefore responsible for the payoff of the other group member we compare this to play when the game is the same but each person is playing only for herself consistent with the principle of responsibility alleviation described by charness charness g 2000 responsibility and effort in an experimental labor market journal of economic behavior and organization 42 375 384 we find that a sense of responsibility for the welfare of others has an effect while the issue of responsibility does not appear to influence the decisions of 2 3 of the population almost 90 percent of the remaining 1 3 of the population plays a less risky strategy when choosing for a group than when playing only for herself

values of gains and losses reference states and choice of measure the available empirical evidence continues to suggest that people commonly value losses more and often much more than otherwise commensurate gains consequently current practice of using the wtp measure for all changes is often likely to lead to misleading assessments of welfare changes the reference dependence of preferences implies instead that while the wtp measure is appropriate for gains the value of both positive and negative changes in the domain of losses will usually be more accurately assessed with the wta measure