THE ECONOMIC VALUE OF PREVENTING RESPIRATORY AND CARDIOVASCULAR HOSPITALIZATIONS

This article provides estimates of the economic benefits of reducing respiratory and cardiovascular hospitalizations based on cost of illness and willingness to pay. The willingness-to-pay estimates indicate that individuals value prevention of a five-day hospitalization event at an average of approximately $2,400. Average total costs of illness per hospitalization are $22,000–39,000. A comprehensive cost-of-illness estimate that includes value of time losses for the hospitalization and at-home recovery periods provides a close approximation of total costs borne by third parties plus individual willingness to pay. Both exceed previous cost-of-illness estimates by about 10–25%. (JEL D61, I18, Q25 )     

Willingness to pay for a Green Energy program: A comparison of ex-ante and ex-post hypothetical bias mitigation approaches

The most persistently troubling empirical result in the contingent valuation method literature is the tendency for hypothetical willingness to pay to overestimate real willingness to pay. Two approaches, ex-ante and ex-post, have been developed to mitigate or eliminate the overstatement of hypothetical willingness to pay. The ex-ante approach addresses hypothetical bias in the survey design stage while the ex-post approach addresses hypothetical bias with follow-up questions to the hypothetical willingness to pay question. We find that willingness to pay estimates are similar when either the ex-ante or ex-post approach are employed. Our results suggest that the approaches should be considered as complements and not substitutes. Employing both approaches to mitigate hypothetical bias we estimate that the annual benefits of the regional amenities associated with a Green Energy program in North Carolina are $186 million.     

Addressing Heterogeneous Preferences Using Parametric Extended Spike Models

Some public programs simultaneously provide a mix of non-rejectable public goods and public bads. Consequently, some individuals would pay for the program, while others might instead need to becompensated. In this paper we estimate twoparametric extended spike models that accountfor positive and negative preferences as wellas indifference for the public good. Weillustrate the models using data on valuationof prescribed burning of underbrush in forests,which reduces the risk of catastrophicwildfires but also produces smoke emissions(the public bad). We compare the two empiricalapproaches to estimate willingness to pay (WTP)for the program and contrast these results withthose obtained from modeling specificationsthat only account for non-negative preferences.Substantial differences in public net benefitswere found between the most flexible parametricextended spike model and the simple spike modelwhere negative responses were coded as zero anda standard binary logit of only positivebidders. The results from the extended spikemodels demonstrated that accounting forindifference and negative values towards thepublic good resulted in substantially lowerwillingness to pay estimates.     

A comparison of contingent valuation method and random utility model estimates of the value of avoiding reductions in king mackerel bag limits

This paper estimates the value of king mackerel bag limit changes with both stated and revealed preference methods. The 1997 Marine Recreational Fishery Statistical Survey allows estimation of the value of avoiding bag limit reductions with the random utility model and the contingent valuation method. Using the contingent valuation method, the willingness to pay to avoid a one fish reduction in the bag limit is $2.45 per year. Using the random utility model, the willingness to pay to avoid a one fish reduction in the bag limit is $2.24 per trip and $7.71 for a two-month time period. Considering several methodological issues, the difference in willingness to pay between the stated and revealed preference methods is in the expected direction.     

RACIAL DISPARITIES IN FEDERAL DISABILITY BENEFITS

We estimate racial differences in the Social Security Administration’s (SSA) decision to award federal disability benefits using newly available data, multivariate econometric models, and Oaxaca decomposition methods. We focus on the appellate level of SSA’s disability decision‐making process. We find that for claimants represented by attorneys there is no statistically significant difference in benefit award rates between whites and African‐Americans. However, for claimants without attorney representation, we find sizable and significant differences between whites and African‐Americans. (JEL J15, H53)     

The willingness to pay for mortality risk reductions in Mongolia

This paper reports results from a stated preference survey designed to estimate the willingness to pay for mortality risk reductions in Ulaanbaatar, Mongolia. The survey includes both contemporaneous and latent risk reductions of a magnitude typically achievable through clean air policy. The study is one of a series of national studies designed to provide comparable estimates around the world. One goal of this series is to build a more solid bridge for benefits transfer between developed and developing countries. The survey was conducted in winter 2010. Estimates of willingness to pay passed external and internal scope tests. Study results imply a value of statistical life of approximately $500,000 (based on a purchasing power parity exchange rate) for a contemporaneous 5-in-10,000 annual risk reduction.     

Temporal insensitivity of willingness to pay and implied discount rates

A number of studies have defined and tested the temporal sensitivity of willingness to pay to payment schemes and the resulting implied discount rates for environmental projects. We demonstrate that those studies have imposed restrictive assumptions on the structure of the willingness to pay function and the underlying decision process. We investigate the temporal sensitivity of willingness to pay using a new temporal willingness to pay function applied to a proposed oyster reef restoration program. We find that (1) holding the length of the project constant, the temporal willingness to pay for the project is the same across different payment schemes, (2) temporal willingness to pay does not vary significantly across projects of varying lengths, and (3) estimated discount rates are low relative to previous studies, but vary significantly across payment schemes and project lengths.     

Willingness to pay for electric vehicles and their attributes

This article presents a stated preference study of electric vehicle choice using data from a national survey. We used a choice experiment wherein 3029 respondents were asked to choose between their preferred gasoline vehicle and two electric versions of that preferred vehicle. We estimated a latent class random utility model and used the results to estimate the willingness to pay for five electric vehicle attributes: driving range, charging time, fuel cost saving, pollution reduction, and performance. Driving range, fuel cost savings, and charging time led in importance to respondents. Individuals were willing to pay (wtp) from $35 to $75 for a mile of added driving range, with incremental wtp per mile decreasing at higher distances. They were willing to pay from $425 to $3250 per hour reduction in charging time (for a 50 mile charge). Respondents capitalized about 5 years of fuel saving into the purchase price of an electric vehicle. We simulated our model over a range of electric vehicle configurations and found that people with the highest values for electric vehicles were willing to pay a premium above their wtp for a gasoline vehicle that ranged from $6000 to $16,000 for electric vehicles with the most desirable attributes. At the same time, our results suggest that battery cost must drop significantly before electric vehicles will find a mass market without subsidy.     

‘Adopt a Hypothetical Pup’: A Count Data Approach to the Valuation of Wildlife

The willingness to pay (WTP) for a coyote conservation program is estimated using a novel payment-vehicle, based on how many ‚problem’ coyotes respondents would be willing to sponsor for a year. This hypothetical scenario mimics an increasingly popular type of actual market. Data from a phone survey conducted in Prince Edward Island are analyzed using count data models that consider different processes explaining zero responses and the level of positive responses. This is particularly important in the case of coyotes, often regarded as an economic bad. Estimates of WTP per coyote per year around $18–$22 and annual WTP per contributor of about $46–$57 are obtained.      

Rehabilitating Weak Complementarity

Using weak complementarity to determine willingness to pay for nonmarket goods is problematic. This note offers a procedure for determining an agent's marginal willingness to pay for a nonmarket good under this assumption that mitigates these problems.
JEL Classification : D 6; H 4; Q 2     

ECONOMIC VALUATION OF MORTALITY‐RISK REDUCTION: STATED PREFERENCE ESTIMATES FROM THE UNITED STATES AND CANADA

Two internet‐based surveys were conducted with adults aged 35 to 84–885 respondents in the United States and 641 respondents in Canada—to estimate willingness to pay (WTP) for reducing mortality risks through out‐of‐pocket costs for health‐care programs. All respondents were asked a series of choice questions followed by a payment‐card question. Causes of death included cancer and heart attack. Levels of annual mortality‐risk reduction were 1, 2, and 5 in 10,000. Converted to values of statistical life, results were in the range of $4–5 million (2002 U.S. dollars) for the choice‐question results for a 2‐in‐10,000 annual risk reduction for illness‐related mortality. U.S. and Canadian results were similar. The payment‐card results were about 50% lower than the choice‐question results. WTP to reduce mortality risk was essentially the same for cancer and heart attack. The results showed WTP weakly increasing with age, and no evidence of lower WTP for older adults versus middle‐aged adults. (JEL Q51)     

DID THE GREAT RECESSION REDUCE VISITOR SPENDING AND WILLINGNESS TO PAY FOR NATURE‐BASED RECREATION? EVIDENCE FROM 2006 AND 2009

Outdoor recreation is a large industry that can diversify public land‐based economies that have traditionally relied upon resource extraction. However, what happens to nature‐based recreation visitor spending and benefits during times of national economic recession? To address this question, we replicate a 2006 high mountain recreation study in the same region 3 years later during the 2009 recession. Results indicate that nature‐based public land recreation in this area did not experience reductions in most categories of visitor spending or total number of visits during the recession. These results imply that nature‐based recreation may represent an economically stable industry in public land mountain economies. Total benefits to the visitors are also quite stable, only dropping from $129 per person per trip in 2006 to $120 in 2009. This 7% drop in willingness to pay is not statistically significant at conventional levels. (JEL Q26)     

Measuring the benefits of local publilc goods: environmental quality in Gaston County,North Carolina

Local governments across the United states have been confronted with a growing range of federal and state-mandated environmental protection programmes. It is found that an application of contingent valuation to a local environmental policy is internally valid by theoretically and empirically examining the economic determinants of responses to a hypothetical referendum. The resulting option price estimate is statistically reliable and has a reasonable order of magnitude. Results indicate that respondents are willing to pay for improvements in water quality,but not air qualilty. It is found that informatiion from various external sources helps to explain risk perceptions, and these perceptions, in turn influence willingness to pay. The aggregate benefits of an air and water polllution control programme to Gaston County are estimated to be $13.07 million annually with a 90% confidence interval of $11.07 million and $16.12 million.     

Local Perception of Public Goods: Recent Assessments of Willingness-to-pay for Endangered Species

A contingent valuation mail survey was administered in late 2001 to better understand current public opinion about controversial endangered species preservation in Orange County, California. Questionnaire design focused on additional taxes residents would be willing to pay to support recovery plans. Habitat and recovery of a single species, the Riverside fairy shrimp, is valued at around $25 per household, and the valuation is significantly changed by the higher scope of the public good provided, with an annual willingness-to-pay of around $50–60 per household for all local endangered species. Across the whole county, the public valuation of biodiversity is substantial yet probably could not fund necessary land acquisition for critical habitat, so continued national support for species preservation remains logical. (JEL Q51 , Q57 , Q58 )     

ECONOMICS OF THE "CRITICAL USE" OF METHYL BROMIDE UNDER THE MONTREAL PROTOCOL

We analyze the economics of granting temporary exceptions to the phaseout of methyl bromide (MeBr) under the Montreal Protocol on Substances that Deplete the Ozone Layer. The protocol allows such exceptions based on technical or economic "feasibility" through a critical use exemption (CUE) process. Data compiled under the protocol make it possible to set forth criteria for the exceptions based on estimation of the benefits of compliance in terms of "willingness to pay" to abate the externality, as well as costs to the users creating the externality. We estimate a political willingness to pay and show that market and supply effects would reduce losses to MeBr users below estimates of such losses provided in CUE nominations. This suggests that the phaseout of MeBr can proceed with considerably fewer CUEs than requested by the parties. (JEL Q1 , Q2 , Q3 , H8 )     

Forest management under fire risk when forest carbon sequestration has value

We develop a multiple forest use model to determine the optimal harvest date for a forest stand producing both timber and carbon benefits under a risk of fire. An empirical application is provided for a forest owner producing maritime pine in Southwest of France. Our results indicate that a higher risk of fire will decrease the optimal rotation period. On the contrary, higher carbon prices increase the optimal harvesting age. To investigate the contradictory effects of fire risk and carbon price on forest rotation, we identify the set of carbon prices and fire risks that lead to a given rotation age. We also show that forest owner's willingness to pay for a risk reduction can be substantial (37.33 euros by ha and by year to reduce the annual fire risk from 1.26% to 0.07%).     

Spatial Heterogeneity of Willingness to Pay for Forest Management

The paper investigates the spatial heterogeneity of public’s preferences for the implementation of a new country-wide forest management and protection program in Poland. Spatial econometric methods and high resolution geographical information system data related to forest characteristics are used to explain the variation in individual-specific willingness to pay (WTP) values, derived from a discrete choice experiment study. We find that respondents’ WTP is higher the closer they live to their nearest forest, and the scarcer forests are in the area where they live. Interestingly, the higher the ecological value of forests in respondents’ area, the more people prefer extending areas of national forest protection. We also investigate spatial patterns in individual-specific WTP scores and in latent class membership probabilities, finding that preferences are indeed spatially clustered. We argue that this clustering should be taken into account in forest management and policy-making.     

城镇居民森林意识研究——以长沙市为例

本文通过对长沙市150户居民的问卷调查研究结果显示:城镇居民对森林的多种效益的认识程度多停留在宏观层面上的大致了解,缺乏微观层面上的细致把握,在对森林多种效益费用的支付愿望上表现出较强的政府依赖倾向.对此,加大森林、林业知识的普及力度,拓展林业产业的发展空间,是提高人们认识森林意识的重要途径.     

Using Choice Experiments to Value the Natura 2000 Nature Conservation Programs in Finland

This paper is concerned with the preferences of the Finnish households for a controversial nature conservation program – the European Union's Natura 2000 Network. Since the program was mainly based on biological considerations, it met strong public opinions from different interest groups in Finland. Using the choice experimental method, we attempt to estimate the values that the Finnish households would place on different preservation levels. It is found that the mean willingness to accept for a decrease in the nature preservation area is much greater than the mean willingness to pay for an increase by the same amount. Also, the marginal willingness to pay becomes zero after an initial increase in the natural preservation area, which is consistent with our earlier findings in a binary choice valuation study. Policy implications of these results are also discussed in relation to different decision criteria.