models for referendum data the structure of discrete choice models for contingent valuation abstract in 1979 bishop and heberlein introduced an appealing variant of the contingent valuation method which required only yes or no responses hanemann developed a utility theoretic interpretation of the yes no responses which has helped popularize the approach recently cameron has offered another interpretation also utility theoretic which she argues is more general than the hanemann random utility model this paper compares the deterministic models suggested by hanemann and cameron showing them to be dual to each other it shows that correct specification of either function must exclude endogenous variables such as quantity demanded it also demonstrates that using utility theoretic models allows one to compare travel cost models and contigent valuation models on the basis of their implied behavior not on the unobservable surplus or variation measure

elicitation and truncation effects in contingent valuation studies comment abstract this comment reviews some of the findings of bateman et al 1995 which appear to have simplified the choice between alternative benefit measures with dichotomous choice contingent valuation errors in the bateman et al analysis are identified and corrected results are used to review the conclusions

correcting for the endogeneity of pro environment behavioral choices in contingent valuation abstract in contingent valuation studies observed behavioral choices often enter as independent variables in the willingness to pay function however these variables may be endogenously determined when the error term in the behavioral model is correlated with the error term in the willingness to pay model we investigate the effects of correcting for the endogeneity of a variable namely membership status in environmental organizations that proxies unobservable characteristics of the respondents jointly modeling the membership variable and the willingness to pay response yields an estimate for the effect of the former that contradicts previous findings but is intuitive and agrees with theoretical expectations

two valuation questions in one survey is it a recipe for sequencing and instrument context effects economic theory suggests that willingness to pay for two goods independently offered should remain unchanged when the survey instrument changes slightly four survey treatments consisting of comprehensive good and a subset of that good were used the surveys alternated in the question ordering and in the embedded good which accompanied the comprehensive good we tested for sequencing and instrument context effects using both a combined and split sample designs in the combined sample case we found some evidence to sequencing effects in the data containing the first subset good likelihood ratio tests indicated that sequencing did not effect scale or location of parameters in the test for instrument context effects evidence was found indicating context does effect willingness to pay estimates

transforming competitiveness into economic benefits does tourism stimulate economic growth in more competitive destinations abstract this research note investigates the impact of a destination s competitiveness upon tourism s contribution to economic growth using a cross section with 131 countries destination competitiveness is measured with the world economic forum s travel and tourism competitiveness index while tourism s contribution to economic growth is measured with the growth decomposition methodology results reveal that destination competitiveness has no statistically significant impact on tourism s contribution to economic growth tourism policy implications and directions for future research are also discussed

a joint investigation of public support and public values case of instream flows in new mexico abstract instream flow can be defined as the flow of water in its natural channels without diversion alone among the western us states new mexico nm fails to provide any mechanism for the protection of instream flows and has a long history of political resistance to any change in the status quo using the combined results from two statewide telephone surveys this study jointly investigates stated voting preferences for a proposed institutional change and stated valuation preferences for minimum instream flow protection the contingent valuation cv question uses a dichotomous choice dc elicitation format and a voluntary contribution trust fund payment vehicle results show a highly significant positive correlation between expressed voting preferences and expressed valuation preferences additionally those individuals who respond yes to the voting question have an expected willingness to pay wtp of 80 with a 95 confidence interval ci that is always positive 62 97 while those who respond no to the voting question have an expected wtp that is actually slightly negative 6 with a 95 ci containing zero 14 2 taken together these results provide evidence of construct validity estimation results are also shown to be temporally reliable across repeated samples thus there is strong evidence of public support for instream flow protection and its associated nonmarket benefits such evidence helps to provide instream flow concerns with standing in future nm water policy debates prominent examples include explicitly defining beneficial use and public welfare to allow consideration of instream flow protection

estimating the public good value of preserving a local historic landmark the role of non substitutability and citizen information this study applies stated preference methods to estimate the public good values of preservation and restoration of a local historic landmark in a medium sized us city the survey device centres on

semi nonparametric distribution free dichotomous choice contingent valuation abstract we apply a semi nonparametric distribution free estimator for binary discrete response data to the estimation of a dichotomous choice contingent valuation model using this estimator mean and median compensating and equivalent variation can be consistently estimated without making nontheoretically motivated assumptions on consumer preferences the approach is illustrated using a contingent valuation survey of willingness to pay for reduction of risk of premature death due to exposure to hazardous waste we find that a conventional parametric estimator and the proposed estimator give similar estimates of unconditional wtp but that conditional on explanatory variables the estimates are quite different

rural amenity values and length of residency new residents of rural communities are often assumed to have preferences for development and conservation that differ from those of longer term residents however the literature offers little to quantify presumed preference heterogeneity this article assesses whether stated preferences differ according to length of residency results are based on a conjoint choice experiment survey of rhode island rural residents heterogeneity according to length of town residency is modeled using dummy variables multiplicative interactions and lagrangian interpolation polynomials results are compared across the three models and identify a range of attributes for which willingness to pay depends on length of residency

how stable is the tourism led growth hypothesis in malaysia evidence from disaggregated tourism markets abstract we contribute to the tourism growth literature by applying the newly developed combined cointegration test and the recursive granger causality test to re assess the stability of the tourism led growth hypothesis in malaysia with respect to 12 different tourism markets the cointegration test results suggest that economic growth of malaysia is cointegrated with all the 12 selected tourism markets however the recursive granger causality test shows that the tourism led growth hypothesis in malaysia is valid and stable with respect to tourist arrivals from only 8 out of the 12 tourism markets almost all of them are from developed countries hence not all international visitor arrivals could effectively drive the growth of the malaysian economy in light of this tourism marketing policies should focus more on those tourism markets that could significantly stimulate economic growth however there should not be total neglect of others as they potentially contribute to the economies of scale

study on benefit transfer in an international setting how to improve welfare estimates in the case of the countries income heterogeneity abstract the paper aims at investigating the validity of benefit transfer in the case of transfers between countries highly heterogeneous in income and demonstrates relative performance of different benefit transfer methods under these conditions lake water quality valuation studies were conducted in two countries in transition poland and the czech republic they reflected two earlier studies carried out in norway we examine how income elasticity of wtp varies with the levels of income and find support for applying the income elasticity of 1 to adjust transferred welfare estimates in case of high differences in income between countries in addition we show that using site specific measures of income outperforms transfers based on gpd per capita the accuracy of benefit transfer is compared using equivalence testing following the tosc two one sided convolutions test a new more informative way of reporting equivalence is proposed based on computing minimum tolerance level rather than specifying it a priori

treatment of don t know responses in contingent valuation surveys a random valuation model abstract this paper provides a utility theoretic interpretation of don t know dk responses in contingent valuation surveys using a referendum elicitation procedure the random valuation model in this paper assumes that each respondent of a contingent valuation survey has an implicit valuation distribution rather than a single true value as traditionally assumed in his her mind if an offered referendum bid is not clearly different from the mean value of one s valuation distribution the respondent may give a dk answer to the cv referendum question based on this model a maximum likelihood procedure is proposed for estimating respondents willingness to pay for a nonmarket good with referendum contingent valuation data which include dk responses an empirical illustration of this estimation procedure is also provided

do reminders of substitutes and budget constraints influence contingent valuation estimates a test is performed of the recommendation by the noaa panel on contingent valuation that respondents be reminded about other substitute resources and their budget constraint prior to answering the willingness to pay wtp question the context for this experiment is a cvm study of the benefits from reducing fire hazards to old growth forests in oregon the test was performed using two mail surveys that were otherwise identical except for the inclusion of reminder statements prior to the wtp question the dichotomous choice logit equations were not statistically different between versions and the mean wtp results were identical

local identification and valuation of ecosystem goods and services from opuntia scrublands of ayacucho peru abstract opuntia scrublands are important ecological economic systems in the andean area they perform a major role protecting slopes against erosion improving the soil properties and providing a variety of products employed in the human diet and in animal feeding as well as cochineal insects a highly valued source of dyes the collection of the insects has represented an important economic activity for the local communities since pre columbian times current peruvian production represents between 85 and 90 of the global market and is mainly based on collection of the insect in natural opuntia scrublands located in the poorest andean areas of ayacucho although much is known about the financial benefits of cochineal for exporters and dye manufacturers information about the value of standing opuntia scrubs to collectors and the relative contribution of opuntia scrubs to their household economies is scarce here we contribute to the estimation of the use value of opuntia scrublands to local communities in ayacucho by initially exploring the cultural domain of opuntia in order to identify the ecosystem goods and services recognized by peasants and later presenting empirical estimates of their importance to annual household income

can contingent valuation distinguish economic values for oifferent public goods this paper reports the first test eval uating whether stated choices as part of a contin gent valuation survey discriminate between signifi cant and trivial causes using a random digit dialed sample for north carolina two different plans were posed to respondents one to expand a popular north carolina highway flower planting program nationwide and a second to facilitate the use of recycled tires in making asphalt for highways ran dom assignment identical payment mechanisms and overall question designs were used the results indicate clear discrimination in choices choice functions and the estimated willingness to pay for the two plans jel q26 d71

using labels to investigate scope effects in stated preference methods insufficient sensitivity to scope variations in the scale of the environmental good on offer remains a major criticism of stated preference methods and many studies fail a scope test of some sort across a range of existing explanations for insensitivity to scope commodity mis specification embedding warm glows there seems to exist no clear conclusion on how to deal with the problem this paper provides an alternative explanation for insufficient sensitivity to scope based on re definition of the determinants of value for environmental goods within an attributes based choice model in the proposed framework respondents willingness to pay need depend not only on physical characteristics of a good but may also depend on the label under which the environmental good is sold in the hypothetical market to investigate this problem a choice experiment study of biodiversity was conducted we find that controlling for the effects of a label in this case national park designation leads to significant increase in the scope sensitivity of welfare measures

a comparison of willingness to pay estimation techniques from referendum questions referendum style willingness to pay questions have been used to estimatepassive use values this referendum question format method may beproblematic for many reasons including the statistical techniques used toestimate willingness to pay from discrete responses this paper comparesa number of parametric semi nonparametric and nonparametric estimationtechniques using data collected from us households regarding federalprotection of endangered fish species the advantages and disadvantagesof the various statistical models used are explored a hypothesis test forstatistical equality among estimation techniques is performed using ajackknife bootstrapping method when the equality test is applied themodeling techniques do show significant differences in some possiblecomparisons but only those that are nonparamentric this can lead toconflicting interpretations of what the data show resource managers andpolicy analysts need to use caution when interpreting results until anindustry standard can be developed for estimating willingness to pay fromclosed ended questions

interval estimates of non market resource values from referendum contingent valuation surveys contingent valuation methods cvm have attracted considerable attention in recent years as researchers have begun to resort to survey methods to elicit individual values for non market goods such as environmental resources or public goods cummings brookshire and schulze 1986 and mitchell and carson 1989 offer comprehensive assessments of these methods cvm survey questions come in a variety of forms one format which has proven to be popular is called the discrete choice or take it or leave it referendum or closedended question originally implemented in the literature by bishop and heberlein 1979 since respondents find it very difficult to identify precisely their true point value of access to some resource or public good open ended valuation questions can be unreliable or can discourage response in contrast most people are familiar with being confronted by a posted price for a good and with deciding whether or not they would buy at that price this is the strategy behind discrete choice cvm questions a different hypothetical price is offered to each respondent and by their yes no response to the question of whether they would be willing to pay this price the researcher gains information about their true underlying point value one persistent difficulty with the econometric techniques that are currently used most widely to analyze referendum contingent valuation data is the absence of confidence intervals for the ultimate value estimates early empirical applications approximate mean valuations using a truncated mean based on a logit model with the upper limit being the highest bid value in the sample unfortunately the variance of this estimated mean cannot easily be recovered from the numerical integration procedure commonly used to calculate the

public support for reducing us reliance on fossil fuels investigating household willingness to pay for energy research and development abstract in order to reduce future dependence on foreign oil and emissions of co2 how much would us households be willing to pay annually to support increased energy research and development r d activities designed to replace fossil fuels does it matter whether the r d includes nuclear energy options we explore these questions using data from a unique set of national telephone and internet surveys using a national advisory referendum format the contingent valuation method is applied to estimate annual household willingness to pay wtp for us household support of a national energy research and development fund erdf for investments in energy sources not reliant on fossil fuels while accounting for the level of un certainty in voting responses the wtp modeling includes a comparison of both classic maximum likelihood estimation mle and bayesian analysis evidence indicates that mle and bayesian analysis achieve similar statistical inference while the bayesian analysis provides a narrower confidence interval around estimated wtp

a randomized response approach to dichotomous choice contingent valuation in this paper we combine dichotomous choice contingent valuation dc cv with the randomized response rr method for asking sensitive survey questions rr increases respondents anonymity by allowing them to answer a sensitive question without revealing with certainty their true response we combine rr with dc cv to test for response effects in the valuation of a public good in a setting of expected social pressure while there are practical implementation issues our findings suggest that the rr technique is a useful tool for exploring social context effects rather than generalize from our pre test results we instead emphasize the development of the experimental technique

a satisfactory benefit cost indicator from contingent valuation abstract standard economic concepts are used to develop a model of individual behavior when subject to the constraints of the contingent valuation choice context the model yields refutable consequences that are consistent with previously reported empirical findings including some that have been thought to be anomalous the model is used to show that different contingent valuation formats have predictably different performance characteristics notably the hicksian compensating measures are satisfactory benefit cost indicators when elicited using any one of several formats identified in the text of the formats examined one form of a policy referendum appears to have the most satisfactory characteristics overall we conclude that contingent valuation is a progressing research program

heterogeneous preferences and aggregation in environmental policy analysis a landfill siting case in many studies of nonmarket resources economists have data to disaggregate results according to subpopulations within the full study population disaggregated results can increase the usefulness of economic analyses improve public confidence in the results and permit public officials to assess equity concerns we outline an approach to obtain disaggregated results when characteristics of individuals may identify distinct preferences the approach is applied to public preferences regarding landfill siting decisions the discussion explores the implications of disaggregated results for policy decisions for bias in aggregate willingness to pay estimates and for nonmarket research methodologies

specification of the logit model the case of valuation of nonmarket goods abstract we address the proper specification of the logit model for estimation of nonmarket commodity demand economic theory is used to show the conditions which must be met by the logit functional form if it is to yield valid estimates of welfare change measures and demand relationships an empirical example is used to illustrate the argument recreational boating data were collected using the contingent valuation method cvm in texas in one instance the demand curve is positively sloped due to the specific functional form chosen the estimated demand curve for the theoretically preferred functional form has the expected negative slope

confidence intervals for evaluating benefits estimates from dichotomous choice contingent valuation studies i evaluate the potential usefulness of nonmarket valuation concepts and techniques from environmental economics for improving wildlife conservation the concepts include distinguishing between on site recreation use value and off site passive use or

the role of uncertainty in the relationship between fairness evaluations and willingness to pay participants in contingent valuation studies may be uncertain about a number of aspects of the policy and survey context the uncertainty management model of fairness judgments states that individuals will evaluate a policy in terms of its fairness when they do not know whether they can trust the relevant managing authority or experience uncertainty due to insufficient knowledge of the general issues surrounding the environmental policy similarly some researchers have suggested that not knowing how to answer wtp questions participants convey their general attitudes toward the public good rather than report well defined economic preferences these contentions were investigated in a sample of 840 residents in four urban catchments across australia who were interviewed about their wtp for stormwater pollution abatement four sources of uncertainty were measured amount of prior issue related thought trustworthiness of the water authority insufficient scenario information and wtp response uncertainty a logistic regression model was estimated in each subsample to test the main effects of the uncertainty sources on wtp as well as their interaction with fairness and proenvironmental attitudes results indicated support for the uncertainty management model in only one of the four samples similarly proenvironmental attitudes interacted rarely with uncertainty to a significant level and in ways that were more complex than hypothesised it was concluded that uncertain individuals were generally not more likely than other participants to draw on either fairness evaluations or proenvironmental attitudes when making decisions about paying for stormwater pollution abatement

disentangling preferences and expectations in stated preference analysis with respondent uncertainty the case of invasive species prevention abstract contingent valuation typically involves presenting the respondent with a choice to pay for a program intended to improve future outcomes such as a program to place parcels into conservation easement or a program to manage an invasive species deducing from these data the value of the good or bad at the core of the program the welfare gain generated by a parcel of conserved land for instance or the loss incurred by a species invasion often is not possible because respondent preferences are conflated with their expectations about future environmental outcomes in the absence of the program this paper formally demonstrates this conundrum in the context of a standard contingent valuation survey and examines the use of additional survey data to resolve it the application is to the prevention of lake invasions by eurasian watermilfoil myriophyllum spicatum an invasive aquatic plant that is present in many lakes in the northern u s and canada and a possible threat to many more respondents are shoreline property owners on lakes without eurasian watermilfoil the estimated per property welfare loss of a lake invasion is 30 550 for one model and 23 614 for another both of which are in reasonable agreement with estimates obtained from a recent hedonic analysis of eurasian watermilfoil invasions in the study area 16 and from a companion contingent valuation survey of shoreline property owners on already invaded lakes

alternative approaches for incorporating respondent uncertainty when estimating willingness to pay the case of the mexican spotted owl abstract this paper explores the sources and patterns of respondents uncertainty regarding their willingness to pay wtp and presents alternative approaches for incorporating this uncertainty into estimation of the logit model recently proposed approaches are compared to methods proposed in this paper which allows for incorporation of uncertainty regarding both yes and no responses these approaches are evaluated by comparing the goodness of fit and variability of mean wtp extreme recoding of uncertain yes responses as no responses reduces the logit goodness of fit and the precision of the wtp estimate incorporating the degree of uncertainty of yes responses results in the highest goodness of fit and the smallest variability of mean wtp among the various models addressing uncertainty a regression model is used to determine the significant determinants of respondent uncertainty

the net benefit of saving the asian elephant a policy and contingent valuation study reports results from a contingent valuation cv survey of willingness to pay wtp for the conservation of the asian elephant of a sample of urban residents living in three selected housing schemes in colombo the capital of sri lanka face to face surveys were conducted using an interview schedule is a non linear logit regression model is used to analyse the respondents responses for the payment principle questions and to identify the factors that influence their responses we investigate whether urban residents wtp for the conservation of elephants is sufficient to compensate farmers for the damage caused by elephants we find that the beneficiaries the urban residents could compensate losers the fanners in the areas affected by human elephant conflict hec and be better off than in the absence of elephants in sri lanka therefore there is a strong economic case for the conservation of the wild elephant population in sri lanka however we have insufficient data to determine the optimal level of this elephant population in the kaldor hicks sense nevertheless the current population of elephant in sri lanka is kaldor hicks preferable to having none c 2003 elsevier b v all rights reserved

policy reforms and productivity growth in india s energy intensive industries abstract india had a highly restrictive industrial and trade policy regime until the end of the1960s this regime while succeeding to some extent in creating a diversified industrial base introduced gross inefficiencies in many sectors of the economy beginning in the early 1970s indian economic policies have been marked by deregulation decontrol and progressive liberalization in this paper we assess the impact of policy reforms on total productivity growth in india s energy intensive sectors aluminum cement fertilizer iron and steel and paper assuming a translog specification of a four input klem production function we use growth accounting to decompose the growth of output into growth of inputs and a residual representing total productivity growth we relate changes in productivity indices to changes in technologies processes and production conditions which policy reforms helped bring about a major finding of this paper is that overall productivity growth in these industries was quite low during 1973 1994 however there were significant differences in productivity growth across industries during this time period these differences can to a large extent be explained by the nature and timing of policy changes in individual sectors

destination competitiveness applying different models the case of slovenia abstract a tourism country s competitiveness is important especially when countries strive for bigger market shares tourism managers have to identify and explore competitive advantages and analyse the destination s competitive position the degree to which a country can benefit from its tourism sector depends largely on this sector s competitive position in the international tourist market this paper refers to the de keyser vanhove model of a competitive destination which was applied to slovenia in 1998 it also studies the integrated model of destination competitiveness developed in a collaborative effort of researchers dealing with the cases of korea and australia and examines its determinants and individual competitive indicators as perceived by slovenian tourist stakeholders on the supply side the result shows that slovenia is more competitive in its natural cultural and created resources but less competitive in the management of tourism and according to the integrated model demand conditions with both uncompetitive elements reducing the slovenian tourism industry s ability to add value the end discussion points out weaknesses in the development of tourism competitiveness models and calls for greater unity with the competitiveness factor theory and for more caution when creating the main competitiveness factors and models

choice modeling and tests of benefit transfer choice modelling cm is a stated preference technique that is increasingly being used to generate estimates of non market values in cm applications respondents to a survey are presented with several sets of options which contain common attributes but at varying levels and are asked to select their preferred alternative from each set the information provided by respondents choices is used to estimate marginal rates of substitution and hence estimates of value in this paper the results from three separate cm applications are presented estimates are made of the value of improving the quality of wetlands the first two applications focused on the gwydir wetlands in new south wales australia one survey was conducted in sydney a major urban centre and the second was conducted in moree a rural centre close to the gwydir wetlands the third survey which was also conducted in sydney focused on the macquarie marshes another wetland in new south wales an objective of the study was to test the suitability of using cm derived estimates for benefit transfer both across different populations and across different wetlands cm is potentially suited to benefit transfer because it is possible to allow for differences in environmental improvements between sites as well as differences in socio economic characteristics between respondent populations several tests aimed at determining the validity of transfers using cm across sites and populations are presented these include tests of the equality of models implicit prices and estimates of compensating surplus

comparative analysis of non market valuation techniques for the eduardo avaroa reserve bolivia abstract ecological tourism has held up as a potentially important development alternative in relatively undeveloped regions and countries however tourism is a highly vulnerable activity where tourists display voluntary and discretionary behavior while tourism can serve as an income generating activity for the region uncontrolled tourism that is developed without consideration of the environmental impact can adversely affect the natural areas determining what to charge tourists to view a natural area is difficult since demand elasticities are not readily available from observable transactions in order to better gauge the value tourists place on the reserve and their sensitivity to changes in the costs of visiting eduardo avaroa non market valuation provides several valuable tools here we test the convergent validity between two popular non market valuation alternatives the contingent valuation method and the contingent behavior method tourists to the eduardo avaroa reserve in bolivia were asked their willingness to pay in visitor days or in dollars due to an improvement in tourism services at the reserve our models show that the traditionally important variables predict willingness to pay for improved services for the contingent behavior contingent valuation and the pooled model however we find statistically and empirically meaningful distinctions in the estimates derived from the two methods comparisons of the implications of adopting the entrance fee recommendations from the two non market valuation techniques are made based on the revenues predicted to accrue to eduardo avaroa reserve if park management techniques were improved this research highlights the challenges in using non market valuation techniques for policy formation particularly in a developing country setting

actual averting expenditure versus stated willingness to pay the purpose of this study is to perform a complete comparison of actual averting expenditure and stated willingness to pay measures and to determine if the averting expenditure is a lower bound of the willingness to pay measured from contingent valuation experiment as suggested by literature in addition to the single value comparison bootstrap krinsky and robb jackknife and cameron are four simulation methods used to calculate confidence intervals for response function sample sizes of 100 200 and 1000 are simulated 100 and 200 times respectively a set of data with 540 households from a contingent policy referendum survey is employed for our purpose under a specific level of bod improvement a one to one single mean value comparison of the actual averting expenditure is greater than the mean willingness to pay from utility difference model the empirical results are consistent with the theoretical expectation for expenditure difference that averting expenditure is a lower bound of willingness to

the public value of improving a weather forecasting system in korea a choice experiment study abstractthe korean government plans to improve the quality of its weather forecasting system in order to increase its public utility the benefits arising from the implementation of this plan shoul

improved estimation of willingness to pay in dichotomous choice contingent valuation studies this paper uses recently developed statistical techniques to achieve improved parameter estimates from models ofdichotomoiis choice contingent valuation data random effects associated with bid amounts presented to respondents are modelled alongside the variance of individual responses to give a nested model which more truly reflects the structure of the data being analyzed quasi likelihood methods for estimating parameters in such hierarchical models are discussed and a simulation method for assessing goodness of fit is demonstrated however estimated parameters may still be biased and hence a parametric bootstrap technique is presented and compared to a delta method approximation jel q26

language related differences in a contingent valuation study english versus spanish to test the similarity of english and spanish speaking households responses to a contingent valuation survey phone interviews were conducted in both languages regarding two forest fire prevention programs while there were similar response rates there were significant differences in the most frequent reasons given for refusing to pay in the pooled logit model the language intercept and bid interaction variables were insignificant in both programs the likelihood ratio test of separate logit equations showed no statistical difference between english and spanish speaking households responses to either program mean benefits reported by spanish speaking households were about one third lower than english speaking households although the difference is not statistically significant according to the 1990 census more than 32 million adults in the united states speak a language other than english in their home and these multiracial populations are growing faster than the english speaking population in many states according the bureau of census from 1990 to 1999 the hispanic population grew by 39 in the united states in states such as arizona california florida and texas hispanics are a large and rapidly growing segment of the population many in the hispanic population either do not speak english or are more fluent in spanish than in english executive order 12898 by president clinton requires federal agencies to evaluate environmental justice of federal actions on minority populations under this executive order policy makers are charged with the daunting

room for improvement in low carbon economies of g7 and brics countries based on the analysis of energy efficiency and environmental kuznets curves abstract carbon emissions which are nowadays targeted for significant reduction cause global warming with climate change producing a series of side effects including economic losses and ecological extinction the data envelopment analysis approach has recently been employed for environmental estimations the target of this study is to introduce a new data envelopment analysis method in order to provide environmental improvement suggestions this study measures the room for improvements in low carbon economies of g7 group and brics group based on the analysis of energy efficiency and environmental kuznets curves the main findings are as follows i the g7 group has greater room for improvement in its carbonization value than the brics group before 2005 however the latter has greater room for improvement in carbonization value than the former after 2005 ii countries with the backfire effect of a high carbon economy include germany italy and south africa iii during the data period three environmental kuznets curves including energy intensity emission intensity and carbonization value do not satisfy the environmental kuznets curve hypothesis that the curves are inverted u shaped on the contrary the three environmental kuznets curves in this study are u shaped

strategic energy management in the primary aluminium industry self generation as a competitive factor the brazilian aluminium industry classified as energy intensive consume alone about 6 of all power generated by hydro electric power plants and therein lies much of the problem needs lots of energy to produce primary aluminium the aim of this study is to evaluate the strategy of energy self generation as a viable alternative of sustainable growth and its importance for the competitive primary aluminium industry in brazil and outlines key tactics to self generation adopted for different economic scenarios and conditions in which it would be effective also environmental aspects are considered because their impacts in costs and the impact of recycling in the environment through mainly reuse o aluminium from cans given the instability of energy prices on the open market and supply volatility self generation appears as the best alternative for maintaining the sustainability of the primary aluminium industry in brazil

how people respond to contingent valuation questions a verbal protocol analysis of willingness to pay for an environmental regulation abstract this paper investigates what a respondent is thinking when answering a willingness to pay question in a contingent valuation using a think aloud technique from psychology called verbal protocol analysis the willingness to pay responses we observed seem to be constructed from a variety of considerations including an obligation to pay a fair share of the cost of the solution and signaling concern for a larger set of environmental issues the finding that respondents seem to construct their values at the time they are asked rather than reporting a more well defined value is seen as consistent with over two decades of research on the psychology of decision making potential uses of verbal protocols in contingent valuation studies are also discussed

understanding technological progress and input price as drivers of energy demand in manufacturing industries in india abstract this paper presents a comprehensive analysis of energy demand behaviour of seven energy intensive manufacturing industries and the aggregate manufacturing sector in india during 1973 74 to 2011 12 the policy perform achieve and trade pat has mandated energy efficiency targets for these manufacturing industries in india we focus on two major drivers of energy demand technological progress and energy price productivity growth accounting and estimation of parametric cost function using annual survey of industry data bring out important implications regarding the role of these two drivers results suggest that these industries experienced technological progress over the study period 1973 74 to 2011 12 with significant energy saving bias during 1998 99 to 2011 12 increase in energy price has led to reduction in energy demand and augmented technological progress in most of the industries energy and material inputs are mostly substitutes during 1998 99 to 2011 12 productivity growth of energy input was induced by both technological progress and increase in energy price estimates of inter factor substitution suggest that price induced reduction in energy demand can be a capital intensive process in case of some industries rebound effect has never taken back full gains of energy efficiency policies in the context of these industries

tough and easy choices testing the influence of utility difference on stated certainty in choice in choice experiments respondents in stated preference studies may be uncertain about their preferences for the good presented to them inspired by wang j environ econ manag 32 219 232 1997 we hypothesize that respondents stated certainty in choice increases with the utility difference between the alternative chosen and the best alternative to that we test this hypothesis using data from two independent choice experiments both focusing on nature values in modelling respondents self reported certainty in choice we find evidence that the stated level of certainty increases significantly as utility difference in choice sets increases in addition stated certainty increases with income furthermore there is some evidence that male respondents are inherently more certain in their choices than females and a learning effect may increase stated certainty we find evidence of this in the first study where the good is described in rather broad and generic terms but not in the second study where a more specific description of the good is used

willingness to pay for curbside recycling with detection and mitigation of hypothetical bias in this article we estimate willingness to pay for curbside recycling using a unique data set we also test for and detect significant hypothetical bias using stated and revealed preference data a short scripted cheap talk statement is used to mitigate the bias and provide more efficient estimates of the welfare impacts of curbside recycling programs copyright 2003 oxford university press

further investigation of voluntary contribution contingent valuation fair share time of contribution and respondent uncertainty in the spirit of randall s resource energy econom 20 197 206 1998 argument for focusing on mapping the performance characteristics of alternative contingent valuation designs and formats the focus of this study is on three tests of the voluntary contribution mechanism we investigate the response effects of three crossed treatments 1 an informational treatment that randomly varies the total cost of providing the good to identify possible fair share effects 2 a split sample informational treatment that makes the time of contribution explicit and 3 elicitation formats that allow respondent uncertainty both as a follow up to a dichotomous choice question and asked directly in a split sample treatment

empirical analysis of the environmental and energy policies in some developing countries using widely employed macroeconomic indicators the cases of brazil china and india abstract this paper proposes an empirical analysis concerning the environmental and energy policies of some important developing countries brazil china and india today present in the international scenario with very different features than in the past the research is carried out using two of the most important macroeconomic indicators several times proposed in the field of policy analysis emission intensity ratio and energy intensity ratio moreover the emission intensity ratio is used in order to verify the empirical existence of the so called environmental kuznets curve for the three countries for what concerns this last point final results do not correspond closely to the theoretical strict formulations hypothesised in the classical environmental kuznets curve model this paper follows completing and concluding the previous one carried out by the same author for some industrialised countries after a brief but ineluctable premise considering the theoretical basic assumptions to define the question and regarding general statements the specific cases are analysed main findings show that resulting trends in these developing countries are different and furthermore they differ from those already observed in industrialised ones

information and effort in contingent valuation surveys application to global climate change using national internet samples this contingent valuation study investigates the issues of information access and respondent effort and is based on a series of national internet samples the focus is on a split sample treatment basic information bi versus enhanced information ei in the latter significantly expanded information is provided about global climate change and the kyoto protocol using a referendum format we compare the treatment effect bi versus ei on willingness to pay wtp we develop measures of respondent effort in accessing optional information through the technology of web based surveys and jointly model effort and wtp using a simultaneous estimation approach results support the use of the joint modeling approach for objective measures of respondent effort and wtp respondent effort is shown to be positively and significantly related to wtp however use of the optional menu is rather modest counts of pages and time spent and is highly variable both across pages and respondents

discrete choice under preference uncertainty an improved structural model for contingent valuation abstract this paper is concerned with discrete choice contingent value estimation in the presence of response errors we attempt to extend the theoretical frameworks developed by hanemann 1984 amer j agric econom 66 332 341 and cameron 1988 j environ econom management 15 355 379 by introducing preference uncertainty with individual respondents we assume that respondents have incomplete knowledge about their true valuation of a nonmarket resource and thus may give wrong yes no answers on whether or not to pay a given bid amount for the resource a post decisional confidence measure for each observed yes no answer is elicited for characterizing the degree of preference uncertainty with the help of this confidence measure we develop an improved structural model for deriving value estimates data from a forest environment valuation survey are used for the empirical estimations

dubious and dubiouser contingent valuation and the time of day we collect contingent valuation data from 524 student survey respondents over a 3 day 72 hour period data analysis of a hypothetical campus referendum focuses on time of day effects on willingness to pay for a renewable energy project we find that subjects responding to the survey during the night time hours i e between 12 a m and 6 a m do not display the law of demand offering theoretically invalid responses to questions with important policy implications results from this research may have serious implications for the contingent valuation method cvm in short just like your father said nothing good happens after midnight when using the cvm jel q51

efficient estimation methods for closed ended contingent valuation surveys closed ended contingent valuation surveys can be very useful in the evaluation of nonmarket resources respondents merely state whether they would accept or reject a hypothetical threshold amount either as payment for giving up access to the resource or as a fee for its use the authors develop a maximum likelihood procedure which exploits the variation in the threshold values to allow direct and separate point estimates of regression like slope coefficients and error standard deviations without truncation bias their illustration uses data from a survey of recreational fisherman to examine factors which influence individuals willingness to pay copyright 1987 by mit press

the effect of common sources of regression error on benefit estimates discussions of the sources of error in recreation demand analysis are common in the existing literature the most traditional line of thought e g gum and martin considers the error component in predicting the individual s recreation behavior to arise from unmeasured socioeconomic factors others e g hanemann attribute at least some of this error to fundamental randomness in human behavior applied statisticians e g hiett and worrall on the other hand suggest that recall of annual number of recreational trips i e the quantity demanded is subject to substantial error still others e g brown et al have argued that recall of explanatory variables such as travel expenses contains error despite the discussion of potential error sources there is no work which relates the sources of error in the demand relationship with benefit measurement 1 of practical importance in recreational demand estimation is whether error assumptions have an influence on welfare measures since it is for public policy decision purposes that recreational demand estimation is usually undertaken will the estimated consumer surplus derived from demand analysis be independent of the assumed source of the error in the regression the purpose of this paper is to explore how the assumptions about sources of error influence estimates of recreation benefits a discussion of the various sources of error in de

relating environmental attitudes and contingent values how robust are methods for identifying preference heterogeneity we assess the importance and robustness of cluster analysis and latent class analysis as methods to account for unobserved heterogeneity we provide a critique and comparison of both methods in the context of measuring environmental attitudes and a contingent valuation study involving endangered species we find strong evidence of robustness for these methods group characterization and assignment of individuals to groups are similar between methods and willingness to pay estimates are consistent in addition there are significant differences in willingness to pay across environmental attitudinal groups and we find that accounting for unobservable heterogeneity provides a significantly better fitting model

paired comparison estimates of willingness to accept versus contingent valuation estimates of willingness to pay estimating empirical measures of an individual s willingness to accept that are consistent with conventional economic theory has proven difficult the method of paired comparison offers a promising approach to estimate willingness to accept this method involves having individuals make binary choices between receiving a particular good or a sum of money willingness to accept can be inferred from the ranking of dollar amounts and the good of interest using the paired comparison approach mean median willingness to accept for a private good is estimated at 59 52 contingent valuation estimate of willingness to pay for the same good yields a mean median of 28 28 while these estimates are statistically different the ratio of willingness to accept to willingness to pay is less than in most previous studies and closer to ratios found in actual cash experiments

contingent valuation and social choice the contingent valuation method for estimating the existence value of natural resources is examined for psychophysical robustness statistical reliability and economic sensibility extensions of standard models for willingness to pay and suitable econometric techniques for analyzing these models are developed the analysis is applied to a series of experiments on the value of preserving wilderness areas in the western united states the results call into question the reliability of the cv method for estimating existence values

contingent valuation theoretical advances and empirical tests since the noaa panel beyond a simple cost effectiveness role and for many policy issues where all the goods or impacts at issue are not readily priced in the market the relevance of economics depends to a large degree on the ability to use contingent valuation cv and other closely related stated preference approaches the government s use of cv as a tool to place a monetary value on damages from the exxon valdez oil spill brought forth strong industry objections to the use of cv in response the national oceanic and atmospheric administration noaa one of the trustee agencies in the exxon valdez case commissioned a blue ribbon panel chaired by kenneth arrow and robert solow to review the use of cv in natural resource damage assessment proceedings the panel s report arrow et al and transmittal letter to the noaa general counsel concluded cv studies can produce estimates reliable enough to be the starting point for a judicial or administrative determination of nat

evaluating the validity of the dichotomous choice question format in contingent valuation hypothetical and actual cash willingness to pay wtp for an art print were elicited with dichotomous choice and open ended question formats comparing hypothetical and actual dichotomous choice responses using both a likelihood ratio test and the method of convolutions suggests we reject equality at the 0 05 but not the 0 01 level hypothetical wtp was roughly two times actual wtp with the dichotomous choice format there were no significant differences between the open ended and dichotomous choice question formats when both were used to estimate hypothetical wtp or both used to estimate actual wtp

how wrong can you be implications of incorrect utility function specification for welfare measurement in choice experiments despite the vital role of the utility function in welfare measurement the implications of working with incorrect utility specifications have been largely neglected in the choice experiments literature this paper addresses the importance of specification with a special emphasis on the effects of mistaken assumptions about the marginal utility of income monte carlo experiments were conducted using different functional forms of utility to generate simulated choices multi nomial logit and mixed logit models were then estimated on these choices under correct and incorrect assumptions about the true underlying utility function estimated willingness to pay measures from these choice modeling results are then compared with the equivalent measures directly calculated from the true utility specifications results show that for the parameter values and functional forms considered a continuous quadratic or a discrete linear attribute specification is a good option regardless of the true effects the attribute has on utility we also find that mistaken assumptions about preferences over costs magnify attribute mis specification effects

bias in discrete response contingent valuation abstract the empirical literature on discrete response contingent valuation has found that seemingly innocuous changes in the statistical models estimated result in significantly different point estimates of willingness to pay this paper hypothesizes and tests several potential explanations for these results first it investigates and compares the biases inherent in single bounded and double bounded maximum likelihood estimation procedures and examines how they react to various bid designs and sample sizes then it examines the presence and identification of outliers in binary choice data and how these outliers influence estimation finally it presents an alternative approach to addressing the issue of outliers which explicitly acknowledges the possibility of upwardly biased response probabilities

test retest reliability of contingent valuation with independent sample pretest and posttest control groups test retest the standard method used to investigate reliability of contingent valuation is limited because when the time period between the two surveys is relatively short the study may exhibit testing recall conversely when the time between the two surveys increases there is an increased chance the true value will change the test retest design cannot isolate these effects independent pretest and posttest control groups allow testing of reliability even when recall occurs or the true value changes using this design we found ex post estimates of hicksian surplus are reliable regardless of whether respondents have direct experience with an activity

construct validity of dichotomous and polychotomous choice contingent valuation questions in this note we conduct construct validity tests for dichotomous choice dc and polychotomous choice pc contingent valuation questions contrary to previous results we find that dc and pc estimates of willingness to pay are theoretically valid convergent valid and similar in terms of statistical precision similar to previous results pc respondents are less sensitive to information than dc respondents we conclude that dc and pc valuation questions are construct valid for this study sequential pc valuation questions could be used in studies where obtaining information about the certainty or intensity of respondent preferences would be useful

statistical approaches to the fat tail problem for dichotomous choice contingent valuation if a cumulative density function esti mated from dichotomous choice data has an unre alistically fat right hand tail mean willingness to pay wtp will be overestimated truncating the range of integration results in a lower bound esti mate of the true mean wtp a normalization pro cedure proposed by boyle welsh and bishop 1988 unnecessarily depresses the estimate further a new statistical approach is presented that allows a best guess estimate of mean wtp because this estimate involves extrapolation beyond the range of the data it tends to be highly variable jel q21

does realism matter in contingent valuation surveys the importance of stressing the realism or policy relevance of a contingent valuation cv survey is commonly recognized by cv researchers this paper focuses on the relationship between the probability that a subject s response will result in real consequences and the subject s accurate reporting of willingness to pay results from experiments support the argument that efforts to make contingent valuation surveys real are important however our results also suggest that the connection between the survey and the likelihood of a payment must be rather powerful before surveys generate accurate reporting of willingness to pay for a public good

would developing country commitments affect us households support for a modified kyoto protocol abstract would us households be willing to pay more to support a modified kyoto protocol mkp if developing countries had binding future limits on greenhouse gas production we explore this question using data from a unique set of national internet samples and web based surveys using an advisory referendum format the contingent valuation method is applied to estimate annual household willingness to pay wtp for us senate ratification of the kyoto protocol for a split sample treatment the basic kyoto protocol bkp control group versus a mkp that includes limits on future greenhouse gas production for major developing countries treatment group the results indicate that the treatment significantly increases the probability of a yes vote on the advisory referendum econometric modeling results provide evidence that the mkp significantly increases us households median wtp to support the treaty

respondent experience and contingent valuation of environmental goods abstract respondent experience i e a respondent s information set has long been suspected to influence contingent valuation estimates of environmental values we assess the influence of experience by explicitly modeling the relationship between respondent experience and both fitted individual resource values and the conditional variance of these estimated values using three different joint specifications for experience and wtp normal censored normal poisson censored normal and zero inflated poisson censored normal we find discrete jumps in resource values as experience increases from zero and that more experienced respondents have smaller conditional variances simulation of arbitrary levels of experience allows standardization of the amount of information when developing welfare estimates

do children matter an examination of gender differences in environmental valuation abstract this paper is concerned with the role played by children in a household on choice behaviour related to willingness to pay wtp for environmental goods improvements data from a contingent valuation cvm survey dealing with three environmental improvements are used to examine three hypotheses the first is that after controlling for income individuals with children have higher wtp than childless individuals the second hypothesis is that women with children are willing to pay more for environmental improvements than men with children particularly in the case where there is concern for environmental health risks the third is that childless men and women exhibit significant differences in wtp that arise from greater time constraints faced by women estimated wtp functions are shown to be statistically different for four groups of individuals women with children men with children women without children and men without children parents of either gender are willing to pay more than their childless counterparts valuations of mothers and fathers are statistically different for only one of the three goods being evaluated interestingly it is the fathers mean valuations that are higher this may arise from the fact that these environmental improvements lead to better recreational opportunities and as indicated earlier men are less time constrained further support for this view comes from results that show that valuations of childless men are significantly greater than those for childless women for two goods the paper concludes with some directions for future research in the area

preferences and willingness to pay for gm labeling policies abstract the use of genetically modified organisms in agriculture is currently the focus of intense public and political debate press articles provide evidence that us consumer concerns toward biotechnology are increasing in this paper we analyze whether consumers prefer mandatory or voluntary labeling schemes through contingent valuation additionally we calculate the premium that consumers are willing to pay in order to subsidize their favorite labeling alternative we find that the premium associated with mandatory labeling is lower than expected costs this indicates that in spite of the concerns surrounding biotechnology consumers remain fairly confident with the current food and drug administration policy which does not require mandatory labeling