does working from home work evidence from a chinese experiment about 10 of us employees now regularly work from home wfh but there are concerns this can lead to shirking from home we report the results of a wfh experiment at ctrip a 16 000 employee nasdaq listed chinese travel agency call center employees who volunteered to wfh were randomly assigned to work from home or in the office for 9 months home working led to a 13 performance increase of which about 9 was from working more minutes per shift fewer breaks and sick days and 4 from more calls per minute attributed to a quieter working environment home workers also reported improved work satisfaction and experienced less turnover but their promotion rate conditional on performance fell due to the success of the experiment ctrip rolled out the option to wfh to the whole firm and allowed the experimental employees to re select between the home or office interestingly over half of them switched which led to the gains from wfh almost doubling to 22 this highlights the benefits of learning and selection effects when adopting modern management practices like wfh

design and analysis of simulated consumer choice or allocation experiments an approach based on aggregate data the authors integrate concepts in conjoint analysis and discrete choice theory in econometrics to develop a new approach to the design and analysis of controlled consumer choice or resource allocat

procrastination at the patent office abstract pointing to a limited set of statistics suggesting that examiners turn in much of their work product at the end of quota periods the commerce department has recently raised concerns over examiner procrastination and its consequences for examination quality end loading of review completions alone however is not dispositive evidence of procrastination in this paper we confirm that examiners complete a substantial percentage of reviews at the end of both bi weekly and quarterly quotas and then proceed to test for additional markers that may separate a procrastination explanation for these findings from a range of alternative theories among other tests explored in this regard we predict and find evidence of an immediate spike in end loading upon the onset of examiner telecommuting a change in work environments that likely exacerbates self control problems our findings support a procrastination interpretation for at least some portion of the observed end loading of reviews with our outcomes analysis suggesting that the predominant consequence of this behavior for examination quality is an increase in examination durations

statistical efficiency of double bounded dichotomous choice contingent valuation the statistical efficiency of conventional dichotomous choice contingent valuation surveys can be improved by asking each respondent a second dichotomous choice question which depends on the response to the first question if the first response is yes the second bid is some amount greater than the first bid while if the first response is no the second bid is some amount smaller this double bounded approach is shown to be asymptotically more efficient than the conventional singlebounded approach using data from a survey of californians regarding their willingness to pay for wetlands in the san joaquin valley we show that in a finite sample the gain in efficiency can be very substantial

paired comparison and contingent valuation approaches to morbidity risk valuation abstract this research uses an experimental approach for eliciting consumer valuations of morbidity risk reductions associated with safter chemical products and introduces the paired comparison questions approach to non market valuation in four applications the paired comparisons approach yields higher morbidity valuations than the more familiar contingent valuation approach however both methodologies produce large values of morbidity reduction benefits in comparison to estimates derived from wage hedonic studies explanations for the difference in the estimates and their magnitudes are suggested along with the public policy implications

integrating methods for ecosystem service assessment and valuation mixed methods or mixed messages a mixed method approach was used to assess and value the ecosystem services derived from the dogger bank an extensive shallow sandbank in the southern north sea three parallel studies were undertaken that 1 identified and quantified where possible how indicators for ecosystem service provision may change according to two future scenarios 2 assessed members of the public s willingness to pay for improvements to a small number of ecosystem services as a consequence of a hypothetical management plan and 3 facilitated a process of deliberation that allowed members of the public to explore the uses of the dogger bank and the conflicts and dilemmas involved in its management each of these studies was designed to answer different and specific research questions and therefore contributes different insights about the ecosystem services delivered by the dogger bank this paper explores what can be gained by bringing these findings together post hoc and the extent to which the different methods are complementary findings suggest that mixed method research brings more understanding than can be gained from the individual approaches alone nevertheless the choice of methods used and how these methods are implemented strongly affects the results obtained

post reform forestland markets in china land markets developed rapidly in china after agricultural land tenure reforms but not after forest reforms we surveyed farmers in three provinces to examine the post reform forestland markets and options to strengthen them using household choice experiments we estimate land market demand and supply under alternative contractual arrangements our findings are consistent with the currently thin markets but also suggest that alternative institutional and contractual conditions could support broader participation in land markets strengthening property rights on forestland emerges as an especially effective possible policy instrument we illustrate its predicted effects on equilibrium rental rates and market participation

estimation using contingent valuation data from a dichotomous choice with follow up questionnaire reply abstract our original article proposed that the two yes no willingness to pay wtp responses produced by this survey format should be viewed as a pair of jointly distributed correlated discrete random variables the comparison model the conventional approach to estimation using these types of data contained a programming error correction alters the results from the comparison model but our original claim that estimation by conventional methods can produce misleading inferences if ours is the appropriate specification still stands this is especially true if negative wtp is precluded when e wtp is calculated

what aspects of formality do workers value evidence from a choice experiment in bangladesh this study uses a choice experiment among 2 000 workers in bangladesh to elicit willingness to pay wtp for job attributes a contract termination notice working hours paid leave and a pension fund using a stated preference method allows calculation of wtp for benefits in this setting despite the lack of data on worker transitions and the fact that many workers are self employed which makes it difficult to use revealed preference methods workers highly value job stability the average worker would be willing to forego a 27 percent increase in income to obtain a 1 year contract relative to no contract or to forego a 12 percent increase to obtain thirty days of termination notice there is substantial heterogeneity in wtp by type of employment and gender women value shorter working hours more than men while government workers place a higher value on contracts than do private sector employees

the effect of unions on the structure of wages a longitudinal analysis this paper studies the effects of unions on the structure of wages using an estimation technique that explicitly accounts for misclassification errors in reported union status and potential correlations between union status and unobserved productivity the econometric model is estimated separately for five skill groups using a large panel data set formed from the u s current population survey the results suggest that unions raise wages more for workers with lower levels of observed skills in addition the patterns of selection bias differ by skill group among workers with lower levels of observed skill unionized workers are positively selected whereas union workers are negatively selected from among those with higher levels of observed skill despite a large and sophisticated literature there is still substantial disagreement over the extent to which differences in the structure of wages between union and nonunion workers represent an effect of trade unions rather than a consequence of the nonrandom selection of unionized workers over the past decade several alternative approaches have been developed to control for unobserved heterogeneity between union and nonunion workers 2 one method that has been successfully applied in other areas of applied microeconometrics is the use of longitudinal data to measure the wage gains or losses of workers who change union status unfortunately longitudinal estimators are highly sensitive to measurement error even a small fraction of misclassified union status changes can lead to significant biases if the true rate of mobility between union and nonunion jobs is low this sensitivity led lewis 1986 to essentially dismiss the longitudinal evidence in his landmark survey of union wage effects in this paper i present some new evidence on the union wage effect based on a longitudinal estimator that explicitly accounts for misclassification errors in reported union status the estimator uses external information on union status misclassification rates along with the reduced form coefficients from a multi variate regression of wages on the observed sequence of union status indicators to isolate the causal effect of unions from any selection biases introduced by a correlation between union status and the permanent component of unobserved wage heterogeneity recognizing that unions may raise wages more or less for

differences between continuous and discrete contingent value estimates in a split sample contingent valuation study of willingness to pay wtp for food safety improvements the dichotomous choice dc elicitation method consistently generated much larger estimates of wtp than did a continuous method little or none of these differences was due to bias introduced by the statistical techniques used with the dc data most or all of the difference was due to differences in respondent behavior in addition the continuous wtp responses showed a significant scope effect while the dc responses did not the observed difference in behavior may be attributable in part to yea saying by dc respondents

a comparison of contingent preference models i compare the informational efficiencies of contingent rating contingent ranking and two contingent paired comparison methods as alternatives to the referendum contingent valuation method the contingent rating method is hypothesized to be most efficient because ratings convey information on preference intensities and can uniquely represent respondent indifference or ambivalence survey data on hunters ratings of alternative hypothetical hunting trips are used to estimate four alternative indirect utility models from which marginal willingness to pay measures for individual trip attributes are derived model comparison wtp estimates and their confidence intervals confirm the relative efficiency of the contingent rating approach

discrete choice survey experiments a comparison using flexible methods abstract this study investigates the convergent validity of discrete choice contingent valuation cv and contingent rating ranking cr methods using flexible econometric methods our results suggest that cv and cr can produce consistent data achieve convergent validity when respondent s preferred choices and the same changes in environmental quality are considered we also find that cr models that go beyond modeling the preferred choice and include additional ranks cannot be pooled with the cv models accounting for preference heterogeneity via random coefficient models and their flexible structure does not make rejection of the hypothesis of convergent validity less likely but instead rejects the hypothesis to about the same degree or perhaps more frequently than fixed parameter models commonly used in the literature

combining contingent valuation and travel cost data for the valuation of non market goods the travel cost method tcm has long been used to infer the economic value of nonmarket resources and public goods more recently contingent valuation cvm survey methods have gained popularity for eliciting these values here cvm survey responses are combined with tcm data on actual market behavior to estimate jointly both the parameters of the underlying utility function and its corresponding ordinary demand function this is a prototypical empirical example of a new modeling strategy variants of which should prove useful in many applications especially where reliance on a single valuation method is undesirable

compensating differentials and self selection an application to lawyers this paper models individual choice between two types of jobs as dependent on the difference in potential earnings and on preferences for nonpecuniary the model leads to simultaneous estimation of earnings and job choice functions in a manner that takes account of self selection of individuals into the sector of highest utility an application to lawyers choosing between private and public interest law casts doubt on the notion that public interest lawyers are accepting substantially lower earnings by virtue of their choice an impression derived from estimation of earnings functions without accounting for self selection the estimation technique also takes proper account of the choice based nature of the sample which appears to be important

is individual environmental consciousness one of the determinants in transport mode choice this article models negative impact on the environment as one of the attributes of transport mode by this modelling we are able to examine whether individual environmental consciousness of this impact plays a significant role in his her choice of transport mode a survey data from saito and onohara area in northern osaka of japan is used to estimate the model with the heteroscedastic extreme value specification both of the estimated and simulated results imply that individual environmental consciousness does influence his her decision on transport mode choice in the sample furthermore the likelihood ratio tests indicate that both the utility and scale parameters are not equivalent across sub samples of university commuters research facility commuters and residents the results of the comparison across sub samples suggest that sometimes we may learn more from sub dividing a whole sample into several sub samples if we could distinguish them by their characteristics

do competitive workplaces deter female workers a large scale natural field experiment on job entry decisions an important line of research using laboratory experiments has provided a new potential reason for gender imbalances in labour markets men are more competitively inclined than women whether and to what extent gender differences in attitudes toward competition lead to differences in naturally occurring labour markets remains an open question to examine this we run a natural field experiment on job entry decisions where we randomize almost 9000 job seekers into different compensation regimes by varying the role that individual competition plays in setting the wage and the gender composition we examine whether a competitive compensation regime by itself can cause differential job entry the data highlight the power of the compensation regime in that women disproportionately shy away from competitive work settings yet there are important factors that attenuate the gender differences including whether the job is performed in teams whether the position has overt gender associations and the age of the job seekers we also find that the effect is most pronounced in labour markets with attractive alternative employment options furthermore our results suggest that preferences over uncertainty can be just as important as preferences over competition per se in driving job entry choices

comparing ranking and contingent valuation for valuing human lives applying nested and non nested logit models the aim of this paper is to investigate whetherrespondents perceive a discrete choice contingentvaluation dc cvm question differently from a rankingquestion we combine the two approaches to valuepublic projects that try to prevent people from dyingprematurely the combined valuation procedure enablesus to investigate the internal consistency of theutility structure between choices applying nested andnon nested logit models if the preference structureis allowed to shift the relative utility weights ofthe attributes differ between the valuation questions and the willingness to pay wtp estimate from thecombined procedure changes

valuation of natural resource improvements in the adirondacks for 20 years acid rain in the adirondack park has been a central issue in the debate about clean air regulation based on a contingent valuation survey of new york residents our study quantifies the total economic value of expected ecological improvements in the park from forthcoming policies our preferred estimates of the mean household willingness to pay range from 48 to 107 annually which imply total statewide benefits ranging from 336 million to 749 million annually alternative assumptions about ecological changes yield benefits up to 1 1 billion the instrument passes external scope sensitivity to bid and sample selection tests

hedonic wages and labor market search this article investigates the consequences of labor market search for the theory of hedonic wages we find that the introduction of search has surprising consequences for the theory of hedonic wages in particular we demonstrate that the equilibrium distribution of wage and nonwage amenity bundles generally bears little resemblance to workers underlying preferences a consequence of this analysis is that estimates of workers marginal willingness to pay derived from the conventional hedonic wage methodology are biased in addition we demonstrate that search generates differences between firm level and employee level data that can cause substantial deviations in the estimates of hedonic wage equations

behavioral impediments to valuing annuities complexity and choice bracketing this paper examines two behavioral factors that diminish people s ability to value a lifetime income stream or annuity drawing on a randomized experiment with about 4 000 adults in a u s national

will the stork return to europe and japan understanding fertility within developed nations we seek to explain the differences in fertility rates across high income countries by focusing on the interaction between the increasing status of women in the workforce and their status in the household particularly with regards to child care and home production we observe three distinct phases in women s status generated by the gradual increase in women s workforce opportunities in the earliest phase characteristic of the 1950s and 1960s in the united states women earn low wages relative to men and are expected to shoulder all of the child care at home as a result most women specialize in home production and raising children in an intermediate stage women have improved but not equal labor market opportunities but their household status lags women in this stage are still expected to do the majority of child care and household production increasing access to market work increases the opportunity cost of having children and fertility falls female labor force participation increases working women in this phase of development have the strongest disincentives to having additional children since the entire burden of child care falls on them in the final phase of development women s labor market opportunities begin to equal those of men in addition the increased household bargaining power that comes from more equal wages results in much higher if not gender equal male participation in household production female labor force participation is higher than in the intermediate phase the increased participation of men in the household also reduces the disincentives for women to have additional children and fertility rates rise compared to the intermediate phase the intermediate low fertility phase might describe japan italy and spain in the present day while the scandinavian countries the netherlands and the modern day united states may be entering the final phase after presenting the empirical evidence we predict that high income countries with the lowest fertility rates are likely to see an increase in fertility in the coming decades

combining revealed and stated preferences consistency tests and their interpretations this article models the recreation demand for iowa wetlands combining survey data on both actual usage patterns i e revealed preferences rps and anticipated changes to those patterns under hypothetical increases in trip costs i e stated preferences sps we formulate and test specific hypotheses concerning potential sources of bias in each approach and discuss what can be learned about the validity of the models from such tests

sorting in the labor market do gregarious workers flock to interactive jobs this paper tests a central implication of the theory of equalizing differences that workers sort into jobs with different attributes based on their preferences we present evidence from four new time use data sets for the united states and france suggesting that workers who are more gregarious as revealed by their behavior when they are not working tend to be employed in jobs that involve more social interactions we also find that workers report substantially higher levels of job satisfaction and net affect while at work if their jobs entail frequent interactions with coworkers and other desirable working conditions

how reliable are meta analyses for international benefit transfers meta analysis has increasingly been used to synthesise the environmental valuation literature but only a few test the use of these analyses for benefit transfer these are typically based on national studies only however meta analyses of valuation studies across countries are a potentially powerful tool for benefit transfer especially for environmental goods where the domestic literature is scarce we test the reliability of such international meta analytic transfers and find that even under conditions of homogeneity in valuation methods cultural and institutional conditions across countries and a meta analysis with large explanatory power the transfer errors could still be large further international meta analytic transfers do not on average perform better than simple value transfers averaging over domestic studies thus we question whether the use of meta analysis for practical benefit transfer achieves reliability gains justifying the increased effort however more meta analytic benefit transfer tests should be performed for other environmental goods and other countries before discarding international meta analysis as a tool for benefit transfer

valuing alternative work arrangements abstract we employ a discrete choice experiment in the employment process for a national call center to estimate the willingness to pay distribution for alternative work arrangements relative to tr

zero hours contracts and labour market policy the evolving nature of atypical work arrangements is studied a particular focus is placed on one such form of work relation zero hour contracts zhcs the paper uses existing secondary data and new survey data collected for the specific purpose of studying alternative work arrangements to describe the nature of zhc work in the uk labour market the interaction with labour market policy is explored in the context of the 2016 introduction of the uk s national living wage zhc work is shown to be an important feature of today s work arrangements and the wage cost shock induced by the new higher minimum wage resulted in an increased use of zhcs in the uk social care sector and in low wage sectors more generally

suffer the little children measuring the effects of parenthood on well being worldwide abstract this paper investigates the relationship between parenthood and well being in a large sample of individuals from 94 countries worldwide we find that having children is negatively related to well being conditioning on economic and socio demographic characteristics can only partially help to explain this finding we show that the negative effect of parenthood on well being is explained by a large adverse impact on financial satisfaction that dominates the positive impact on non financial satisfaction the results are robust to the use of alternative empirical specifications and to the inclusion of the reported ideal number of children as a proxy variable to account for the endogeneity of parenthood decisions

payments for ecosystem services programs predicting landowner enrollment and opportunity cost using a beta binomial model this paper concerns predicting enrollment in payment for ecosystem services pes programs to promote habitat preservation on private lands we develop a beta binomial model to address both program participation and the amount of land enrolled by each potential enrollee we apply the estimation approach to stated preference data from non industrial private forest owners in finland as an alternative econometric model we also develop a multivariate censored regression model of enrollments using cross validation we find that the beta binomial model predicts at least as well as the multivariate censored model yet has fewer parameters using our estimation results we demonstrate policy predictions regarding program enrollment and landowner opportunity cost

the stress cost of children on moms and dads abstract we use longitudinal data describing couples in australia from 2001 to 12 and germany from 2002 to 12 to examine how demographic events affect mothers and fathers perceived time and financial stress consistent with the view of measures of stress as proxies for lagrangean multipliers in models of household production we show that births increase time stress especially among mothers and that the effects last at least several years births also slightly raise both parents financial stress while the departure of a child from the home reduces parents time stress its negative impacts on the tightness of the time constraints are much smaller than the positive impacts of a birth

the expected price of keeping up with the joneses abstract inflation expectations elicited in surveys have been found to exhibit large dispersion across individuals although several explanations have been proposed none fully explain this puzzle we explore in this paper a new behavioral factor social comparison using original survey data we find that respondents who feel they are falling behind compared to their peers report significantly and substantially higher inflation expectations we argue that this result is consistent with an experience based belief formation model in which those unable to keep up with the joneses overweight the high prices of aspiration goods they are unable to purchase

reconsidering heterogeneity and aggregation issues in environmental valuation a multi attribute approach the economic valuation of complex environmental goods composed of multiple attributes is an expanding field of research in ecological and environmental economics however several issues are still subjects of debate this paper focuses on three of them the linearity of the valuation function in the attributes aggregation criteria for obtaining social values and the heterogeneity of individuals utility functions a methodological approach based on multi attribute utility theory which enables us to contrast the impact of these concerns on the valuation of environmental goods is proposed we employ the methodology to value a protected natural area and from the results obtained we can conclude that the non linearity and the heterogeneity of the individual utility function are relevant aspects of environmental valuation that need to be taken into account when valuing environmental goods

perceptions versus objective measures of environmental quality in combined revealed and stated preference models of environmental valuation abstract this study examines perceptions and objective attribute measures in discrete choice models of recreation site choice behavior these forms of attribute measurement are examined in individual and combined revealed preference stated preference models our results suggest that the model based on perceptions slightly outperforms the models based on objective attribute measures however issues such as the definition of the choice set and the measurement of welfare present significant challenges when using perceptions data

the incidence and wage consequences of home based work in the united states 1980 2000 abstract this study documents the rapid growth in home based wage and salary employment and the sharp decline in the home based wage penalty in the united states between 1980 and 2000 these twin patterns observed for both men and women in most occupation groups suggest that employer costs of providing home based work arrangements have decreased consistent with information technology it advances being an important source of these falling costs i find that occupation gender cells that had larger increases in on the job it use also experienced larger increases in the home based employment share and larger declines in the home based wage penalty

self employment in the eu quality work precarious work or both this paper estimates the differences in earnings between self employed and employees in the eu using the european union statistics on income and living conditions data and quantile regression methods it finds that in both eastern and western europe self employment pays more than regular employment only for workers at the top of the earnings distribution and considerably less than regular employment for those below the median these differences are smaller in eastern europe reflecting lower protection of regular employees this pattern is not driven by low skilled workers and it can be observed in both high skilled and low skilled occupations results are robust to accounting for differences in taxation hours worked and individual unobserved characteristics the evidence provided points to the lack of protective rights for the self employed and low earnings at the beginning of the self employment spells as the main explanations for lower earnings for the majority of self employed

would you choose your preferred option comparing choice and recoded ranking experiments previous research has shown that results from a choice experiment are statistically different from those obtained from a ranking experiment that is recoded and treated as a choice experiment using only the first rank by avoiding some of the shortcomings of previous comparisons we obtain the opposite results using data from the valuation of a cork oak reforestation program in the south of spain structural models and welfare estimations are statistically indistinguishable irrespective of the use of parametric or bootstrapping tests further we employ follow up questions and subsample analysis to test whether divergences appear when potential effects are isolated copyright 2008 oxford university press

compensating wage differentials and shift work preferences we study if there are compensating wage differentials paid for shift work using french matched employer employee data for male full time blue collar workers there is a significant shift premium of 16 that has a significant impact on shift work choice

preference for the workplace investment in human capital and gender we use a hypothetical choice methodology to estimate preferences for workplace attributes from a sample of high ability undergraduates attending a highly selective university we estimate that women on average have a higher willingness to pay wtp for jobs with greater work flexibility and job stability and men have a higher wtp for jobs with higher earnings growth these job preferences relate to college major choices and to actual job choices reported in a follow up survey four years after graduation the gender differences in preferences explain at least a quarter of the early career gender wage gap

using choice experiments to value the environment this paper we outline the choice experiment approach to environmental valuation this approach has its roots in lancaster s characteristics theory of value in random utility theory and in experimental design we show how marginal values for the attributes of environmental assets such as forests and rivers can be estimated from pair wise choices as well as the value of the environmental asset as a whole these choice pairs are designed so as to allow efficient statistical estimation of the underlying utility function and to minimise required sample size choice experiments have important advantages over other environmental valuation methods such as contingent valuation and travel cost type models although many design issues remain unresolved applications to environmental issues have so far been relatively limited we illustrate the use of choice experiments with reference to a recent uk study on public preferences for alternative forest landscapes this study allows us to perform a convergent validity test on the choice experiment estimates of willingness to pay

starting point bias in dichotomous choice valuation with follow up questioning abstract follow up questions are frequently used to improve the efficiency of dichotomous choice contingent valuation questionnaires however a number of authors e g 12 16 have noted a significant difference between the wtp distributions implied by initial and follow up question responses this paper investigates starting point bias as one explanation for the phenomenon we develop a model of starting point bias in the context of dichotomous choice questioning with follow up using a monte carlo simulation to illustrate the potential bias imparted to wtp estimates an application is provided based on data from a cv study in northcentral iowa

provided and perceived status quo in choice experiments implications for valuing the outputs of multifunctional rural areas this article presents a choice experiment analyzing multifunctional rural development policies targeting conservation and recovery of environmental social and cultural assets in choice experiments a base alternative is usually included in order to estimate the welfare change associated to policy proposals this study is concerned with the much neglected issue of the impact on policy analysis of the definition of a status quo alternative either as an objective assessment by experts or as a self reported perception by respondents convergent validity analysis and prospective policy scenarios show a significant impact of different status quo specifications on individuals preferences and related welfare measures when complex and unfamiliar biophysical systems are involved in policy analysis and evaluation

designing transactions without framing effects in iterative question formats abstract several studies document that iterative question formats used in contingent valuation studies produce anomalies in respondent behavior that appear to threaten the validity of welfare estimates by decomposing iterative question formats into their ascending and descending sequences we show that these anomalies occur only in ascending sequences we describe the conditions under which comparable patterns of behavior are likely to be found in other iterative question formats that begin with a discrete willingness to pay question we then develop a unified explanation of these anomalies using our model of framing based on prospect theory we provide the first head to head test of rival explanations of these behavioral patterns by developing refutable hypotheses for the strategic behavior yea saying anchoring and cost expectations models finally based on our own statistically robust model we show how these anomalies can be eliminated without loss of the statistical efficiency of most iterative question formats

early gender gaps among university graduates abstract we use data from six cohorts of university graduates in germany to assess the extent of gender gaps in college and labor market performance twelve to eighteen months after graduation men and women enter college in roughly equal numbers but more women than men complete their degrees women enter college with slightly better high school grades but women leave university with slightly lower marks immediately following university completion male and female full timers work a very similar number of hours per week but men earn more than women across the pay distribution with an unadjusted gender gap in full time monthly earnings of about 20 log points on average including a large set of controls reduces the gap to 5 10 log points the single most important proximate factor that explains the gap is field of study at university

compensating differentials for shift work a model analyzing the choice of shift is developed and estimated using data from two supplements to the current population survey the findings show a positive wage premium for shift work that varies with personal characteristics and there is strong evidence showing the importance of self selection as workers with low potential daytime earnings are more likely to choose night work and supplement their earnings the findings demonstrate that cross section estimates of wage premiums for union membership and firm size are biased upward because they pick up some of the compensating differential for shift work

environmental quality preference and benefit estimation in multinomial probit models a simulation approach simulated maximum likelihood is used to estimate a random parameter multinomial probit model of destination choice for recreational fishing trips formulated to accommodate varying tastes and varying perceptions of environmental quality across individuals the restricted likelihood ratio test strongly rejects the independent probit model which is similar to the independent logit model in both the parameter and benefit estimates furthermore both the krinsky robb and bootstrapping procedures suggest that the benefit standard deviation of an environmental policy is found to be markedly lower higher when heterogeneous preferences are taken into account

the pricing of job characteristics when markets do not clear theory and policy implications this article examines nonsequential search when jobs vary with respect to nonpecuniary characteristics in the presence of frictions in the labor market the equilibrium job distribution need not show evidence of compensating wage differentials the model also generates several pervasive features of labor markets unemployment and vacancies apparent discrimination and market segmentation when workers are homogeneous restrictions on the range of job offers decrease welfare and cannot reduce unemployment however when workers have heterogeneous preferences such restrictions may lower unemployment and can even lead to a pareto improvement in welfare we consider the impact of policies banning discrimination and regulating working conditions

using conjoint analysis to derive estimates of compensating variation abstract we use several approaches to derive estimates of hicksian compensating variation from conjoint ratings data the different estimation approaches produced mixed results with respect to consistency with utility theory statistical significance of key variables magnitude of welfare estimates and confidence bounds on welfare estimates these findings suggest conjoint analyses are not a panacea for the problems being debated regarding contingent valuation and travel cost methodologies and conjoint questions appear to share many of the advantages and disadvantages associated with dichotomous choice contingent valuation questions

willingness to pay for quality improvements should revealed and stated preference data be combined abstract in this article we propose theoretically consistent welfare measurement of use and nonuse values for an improvement in environmental quality with revealed and stated preference data an analytical model based on the comparative static analysis of the variation function that describes the relationship between recreation demand and dichotomous choice contingent valuation models is estimated our results show that revealed and stated data should not be combined under the same assumed preference structure unless the two decisions imply the same change in behavior induced by the quality change in addition our results indicate scope effects in willingness to pay measures estimated with stated preference data

finding sensitivity to scope in nonmarket valuation summary data limitations frequently prevent using actual consumer behavior in determining natural resource values so stated preference methods are used whether value estimates show sensitivity to the scope of resource valued is a key test for their validity which several studies fail developing a correlated panel mixed logit model of households water quality valuations in california we show that false negatives in scope tests can result when individual preference variation and correlation are ignored and split sample comparisons are used monte carlo simulations further demonstrate potentially prevalent false rejections of scope sensitivity even when within subject comparisons of willingness to pay portray strong scope sensitivity copyright 2013 john wiley sons ltd

option price estimates for water quality improvements a contingent valuation study for the monongahela river abstract we present the findings from a contingent valuation survey designed to estimate the option price bids for the improved recreation resulting from enhanced water quality in the pennsylvania portion of the monongahela river the findings are based on a survey design that used professional interviewers to conduct personal interviews determined from a representative sample of 393 households in addition the research suggests that protest bids and outliers be viewed similarly accordingly a new technique for identifying outlying responses is proposed the findings suggest that the question format affects the option price estimates and that criteria for determining the final sample of responses can have an important influence on contingent valuation results

ranking firms using revealed preference this article estimates workers preferences for firms by studying the structure of employer to employer transitions in u s administrative data the article uses a tool from numerical linear algebra to measure the central tendency of worker flows which is closely related to the ranking of firms revealed by workers choices there is evidence for compensating differentials when workers systematically move to lower paying firms in a way that cannot be accounted for by layoffs or differences in recruiting intensity the estimates suggest that compensating differentials account for over half of the firm component of the variance of earnings

choice inconsistencies among the elderly evidence from plan choice in the medicare part d program we evaluate the choices of elders across their insurance options under the medicare part d prescription drug plan using a unique data set of prescription drug claims matched to information on the characteristics of choice sets we document that elders place much more weight on plan premiums than on expected out of pocket costs value plan financial characteristics beyond any impacts on their own financial expenses or risk and place almost no value on variance reducing aspects of plans partial equilibrium welfare analysis implies that welfare would have been 27 higher if patients had all chosen rationally

random coefficient models for stated preference surveys abstract this paper combines the use of random coefficient discrete choice models that allow for correlated errors in the form of unobserved preference heterogeneity with an investigation of the reliability and usefulness of rankings data for the data we examine we find significant unobserved preference heterogeneity in the rankings which violates the underlying assumptions of the rank ordered logit model further directly modeling unobserved preference heterogeneity results in significant improvement in the precision of the parameter estimates and in estimated willingness to pay wtp the reliability and usefulness of rankings data should be re examined with econometric models not subject to the independence of irrelevant alternatives iia

comparison of contingent valuation and conjoint analysis in ecosystem management abstract contingent valuation cv and conjoint analysis were used to estimate landowner s willingness to pay wtp for ecosystem management on non industrial private forest land the results suggest that even when conjoint and cv questions are the same except for rating and pricing format respectively wtp estimates are quite different since most conjoint models essentially count maybe responses to valuation questions as yes responses we conclude that conjoint model results often produce wtp estimates that are biased upwards

subsidizing the stork new evidence on tax incentives and fertility this paper exploits the introduction of a pronatalist transfer policy in the canadian province of quebec that paid up to c 8 000 to families having a child i implement a quasi experimental strategy by forming treatment and control groups defined by time jurisdiction and family type the incentive was available broadly rather than to a narrow population as studied in previous work providing an exceptional opportunity to investigate heterogeneous responses i find a strong effect of the policy on fertility and some evidence of a heterogeneous response that may help reconcile these results with previous estimates

designing choice sets for stated preference methods the effects of complexity on choice consistency abstract we vary the complexity of choice sets used in stated preference methods to evaluate the impact on choice consistency we define five measures of complexity that capture either the amount of information or the correlational structure of information in a choice set using these measures as randomly assigned treatments in a large experiment we analyze the consistency of respondents choices using a heteroskedastic multinomial logit model we find that i all of our measures of choice set complexity affect choice consistency ii changes in the correlational structure of information have the largest impact on choice consistency and iii choice complexity significantly distorts welfare estimates our results confirm economists initial worry that moving from contingent valuation to conjoint methods will increase complexity induced choice inconsistency however our analysis also shows that these negative impacts may be mitigated if precautions are taken at the design and estimation stages of stated preference methods

wages or fringes some evidence on trade offs and sorting the two key predictions of hedonic wage theory are that there is a trade off between wages and nonmonetary rewards and that the latter can be used as a sorting device by firms to attract and retain the kind of employees they desire we use the vignettes method to estimate individuals willingness to pay for fringe benefits and job amenities we find negative wage fringe trade offs considerable heterogeneity in willingness to pay for fringe benefits and signs of sorting

recreation demand models with taste differences over people we estimate random parameter logit models of anglers choice of fishing site the models generalize logit by allowing coefficients to vary randomly over anglers rather than being fixed the models do not exhibit the restrictive independence from irrelevant alternatives property of logit and can represent any substitution pattern estimation explicitly accounts for the fact that the variation in coefficients over anglers induces correlation in unobserved utility over trips by the same angler willingness to pay for improved fish stock and the value to anglers of specific sites are calculated from the models and compared with the estimates obtained from a standard logit model

heterogeneous preferences regarding global climate change we examine the structure of preferences for mitigating impacts of global climate change that will not occur during the lifetimes of most who are alive today because no market data exist for such distant markets a statedpreference approach is used the analysis is based on the random parameters logit model and the results indicate substantial heterogeneity in respondent preferences that mean willingness to pay is a significant and increasing function of the scope of the impact and provocatively that respondents have the same preferences over the two very different time horizons that we consider e examine the structure of preferences for mitigating impacts of global climate change that will not occur during the lifetimes of most who are alive today studies using current market data have estimated the potential costs of climate change on agriculture mendelsohn nordhaus shaw 1994 and on other aspects of measured production nordhaus 1994 but market data can not reveal the willingness of those currently alive to pay for measures to mitigate impacts that may not happen for 100 years or more there is serious public discussion involving diplomats at the highest levels about measures to mitigate emissions that would cost the united states alone 100 to 200 billion dollars annually therefore estimating the willingness of those currently alive to pay for mitigation measures is not a fanciful exercise but rather a crucial effort to determine how much mitigation should be undertaken it is the preferences of those alive today regarding acceptable levels of climate impacts and not the unknowable preferences of those who do not yet exist that will ultimately determine how much mitigation we pursue in the next quarter century as this question cannot be answered with market data we use the stated preference sp approach and elicit preferences for preventing climate change induced impacts a host of climate change impacts have been enumerated this study focuses on one type of impact that may be important but has received little attention from economists scientists have predicted that widespread ecosystem shifts may accompany changes in climate vemap 1995 ecosys tem shifts are likely to evolve slowly indicating that lost use values are likely to be small for those alive today yet the public may still be willing and asked to pay for mitigation measures that are designed to slow the transformation of ecosystems the current debate over climate change demon strates two things the first is that some people do care about long term changes that will never affect them or perhaps even their children the second is that preferences regarding the impacts of climate change are very heterogeneous as other members of the public appear much less concerned long term horizons combined with heterogeneous prefer ences makes ecosystem shifts a useful place to begin analyzing preferences for mitigating climate change im pacts a stated preference survey was designed that asked respondents to choose their most preferred program to reduce ecological impacts from a set menu of five or six different programs the programs varied in terms of costs the degree of ecosystem change and in the mitigation method four different menus provided to each respondent yielded four distinct valuation responses section ii de scribes the random parameters logit model for repeated choices that allows for a flexible correlation structure based on heterogeneous preferences the ecosystem change and the stated preference survey are discussed in section iii in section iv we estimate the random parameters model and estimate the willingness to pay to prevent various levels of ecosystem change section v concludes with a discussion of how the scope of the impact preference heterogeneity and the time horizon affect willingness to pay

heterogeneous preferences for community recycling programs this paper examines household preferences for community recycling programs which have both public and private good dimensions the data come from a survey conducted in seattle wa which elicited stated preference contingent ratings for different recycling programs relative to status quo with experimental variation in the overall community recycling rate achieved and expected household cost the recycling rate is interpreted as capturing the public benefits of recycling programs and constitutes the most common measure used by policy agencies for setting waste management objectives and evaluating policy initiatives the analysis begins with fixed parameter models that explore different ways of handling rating data and mixed logit estimations that capture household preference heterogeneity both within and across different recycling programs this analysis yields unique estimates of willingness to pay for an increase in the community recycling rate predicted individual specific utility parameters are then regressed on household background information to explicitly examine the nature of preference heterogeneity overall this paper generates interpretable policy relevant insights into the public and private good dimensions of community recycling programs

testing the internal consistency of contingent valuation surveys abstract for an internal consistency check one can examine wtp responses to different surveys holding an environmental problem constant concave preferences imply wtpconcavein the success of a remedy the same preferences imply wtpconvexin the magnitude of an environmental problem assuming a successful remedy having opposite signed curvature of these two wtp patterns is general not requiring concave preferences for an adding up test an environmental commodity can be divided then wtp for one part plus wtp for the second part conditional on already having the first part equals wtp for the whole adjusted by an income effect

the pervasive absence of compensating differentials we study the relation between individual preferences for job amenities e g type of work job security and compensating wage differentials in cross section to this end we estimate a partial equilibrium job search model on panel data from eight european countries there are five non wage job characteristics and two sources of job to job mobility on the job search and reallocation shocks we also allow for two types of unobserved heterogeneity we find strong preferences for amenities especially job security yet these preferences do not translate into significant wage differentials in cross section counterfactual experiments show that one would need extremely low levels of search frictions for compensating differentials to arise lastly a similar exercise on the distribution of job change outcomes reveals the role of constrained job to job mobility in the absence of compensating wage differentials copyright 2009 john wiley sons ltd

are hypothetical referenda incentive compatible a comment in a recent article in this journal cummings al 1997 offer experimental evidence rejecting the hypothesis that a hypothetical referendum is an incentive compatible mechanism for obtaining the social value of or willingness to pay for changes in the allocation of environmental goods and services while cautions in offering a blanket rejection of hypothetical referenda as a means of measuring economic values on the basis of their findings the authors do suggest that at least in experimental settings respondents appear to behave differently when real money is changing hands wheather hypothetical situations adequately mimic real market situations has been debated in the contigent valuation literature since its inception see cummings brookshire and schulze 1986 cummings et al s finding of incentive incompatibility appears to offer strong evidence for the critics of hypothetical referenda

a comparison of stated preference methods for environmental valuation this paper presents an empirical comparison of contingent valuation cvm and choice experiments which are used to value environmental quality changes both of these methods require individuals to state their preferences for environmental qualities however choice experiments differ from cvm in that environmental attributes are varied in an experimental design which requires respondents to make repeated choices between bundles of attributes the empirical application involved the effect of environmental quality changes arising from forest management practices on recreational moose hunting values significant differences were found between the values derived from the two methods however detailed examination of the implied choice behaviour suggested that respondents ignored substitute recreation areas in the cvm question restricting the choice experiment model to consider only the one site where quality was varied resulted in welfare estimates similar to the cvm model this highlights the importance of substitutes in environmental valuation and suggests that choice experiments may be more appropriate than cvm in some cases