the generalized multinomial logit model accounting for scale and coefficient heterogeneity the mixed or heterogeneous multinomial logit mixl model has become popular in a number of fields especially marketing health economics and industrial organization in most applications of the model the vector of consumer utility weights on product attributes is assumed to have a multivariate normal mvn distribution in the population thus some consumers care more about some attributes than others and the iia property of multinomial logit mnl is avoided i e segments of consumers will tend to switch among the subset of brands that possess their most valued attributes the mixl model is also appealing because it is relatively easy to estimate recently however some researchers have argued that the mvn is a poor choice for modelling taste heterogeneity they argue that much of the heterogeneity in attribute weights is accounted for by a pure scale effect i e across consumers all attribute weights are scaled up or down in tandem this implies that choice behaviour is simply more random for some consumers than others i e holding attribute coefficients fixed the scale of their error term is greater this leads to a scale heterogeneity mnl model s mnl here we develop a generalized multinomial logit model g mnl that nests s mnl and mixl by estimating the s mnl mixl and g mnl models on 10 data sets we provide evidence on their relative performance we find that models that account for scale heterogeneity i e g mnl or s mnl are preferred to mixl by the bayes and consistent akaike information criteria in all 10 data sets accounting for scale heterogeneity enables one to account for extreme consumers who exhibit nearly lexicographic preferences as well as consumers who exhibit very random behaviour in a sense we formalize below

sports sentiment and stock returns this paper investigates the stock market reaction to sudden changes in investor mood motivated by psychological evidence of a strong link between soccer outcomes and mood we use international soccer results as our primary mood variable we find a significant market decline after soccer losses for example a loss in the world cup elimination stage leads to a next day abnormal stock return of 49 basis points this loss effect is stronger in small stocks and in more important games and is robust to methodological changes we also document a loss effect after international cricket rugby and basketball games this paper employs a novel mood variable international soccer results to investigate the effect of investor sentiment on asset prices using a cross section of 39 countries we find that losses in soccer matches have an economically and statistically significant negative effect on the losing country s stock market for example elimination from a major international soccer tournament is associated with a next day return on the national stock market index that is 38 basis points lower than average we also document a loss effect after international cricket rugby and basketball games on average the effect is smaller in magnitude for these other sports than for soccer but is still economically and statistically significant we find no evidence of a corresponding effect after wins for any of the sports that we study controlling for the pre game expected outcome we are able to reject the hypothesis that the loss effect after soccer games is driven by economic factors such as reduced productivity or lost revenues we

spatial boundaries and choice set definition in a random utility model of recreation demand we are concerned with the definition of choice set used in random utility models of recreation demand in particular we are concerned with the spatial boundaries used to define choice sets in this paper using a model of day trip fishing in maine we examine the sensitivity of parameter and welfare estimates to changes in the spatial boundary we find that there exists some threshold distance beyond which adding more sites to the choice set has negligible effects on the estimation results

vertically summing public good demand curves an empirical comparison of economic versus political jurisdictions fiscal equivalence for efficient provision of a public good requires perfect correspondence between political and economic jurisdictions however the spatial extent of the economic jurisdiction is an empirical question drawing on four survey based valuation studies we measure the relative public good benefit gradient as a function of residential location from six natural resource public goods the results indicate commonly used state political jurisdictions reflect an average of 13 of total benefits in the economic jurisdiction although with a logarithmic form for distance the upper confidence interval of state benefits can include 100 for some species

estimation of distance decay functions to account for substitution and spatial heterogeneity in stated preference research in a site selection choice experiment various hypotheses are tested related to spatial heterogeneity in willingness to pay wtp for environmental improvements spatial heterogeneity is measured through distance decay effects substitute sites inside and outside the experiment s choice set and spatial trend variables we demonstrate that distance decay functions differ between users and nonusers and across study sites also the distance to substitutes outside the choice set explains spatial variation in wtp we show that further extending the model with spatial trend variables reveals additional spatial heterogeneity in choices accounting for spatial heterogeneity patterns results in significantly different wtp estimates for environmental improvements jel q25 q51

reliability of individual valuations of public and private goods choice consistency response time and preference refinement we examined the reliability of a large set of paired comparison value judgments involving public goods private goods and sums of money as respondents progressed through a random sequence of paired choices they were each given their response time decreased and they became more consistent apparently fine tuning their responses suggesting that respondents tend to begin a hypothetical value exercise with relatively imprecise preferences and that experience in expressing preference helps reduce that imprecision reliability was greater for private than for public good choices and greater for choices between a good and a monetary amount than for choices between two goods however the reliability for public good choices was only slightly lower than for the private goods published by elsevier b v

the value of familiarity effects of knowledge and objective signals on willingness to pay for a public good we design and conduct a field experiment in which treated subjects receive a precise and objective signal regarding their knowledge about a public good before estimating their wtp for it we find that the causal effect of objective signals about the accuracy of a subject s knowledge for a public good can dramatically affect their valuation for it treatment caused a significant increase of 85 129 in wtp for well informed individuals we find no such effect for less informed subjects our results imply that wtp estimates for public goods are not only a function of true information states of the respondents but beliefs about those information states

substitution effects in the valuation of multiple environmental programs abstract a theoretical framework for understanding substitution and complementary effects between environmental programs is derived a multiple program valuation function is specified and its structure analyzed a maximum likelihood estimator is derived to estimate the parameters of the valuation function using referendum type contingent valuation data the empirical analysis shows that the conventional benefit aggregation approach of independent valuation and summation overstates the benefits of two and three program policies by an average of 24 and 54 respectively

effect of distance on the preservation value of water quality in the past dozen years an extensive body of literature has developed on the willingness to pay for water quality in particular its recreation use and nonuse preservation values this paper illustrates a procedure for estimating the effect of distance on the preservation value of environmental quality using the contingent valuation approach the case considered is the potential degradation of water quality due to coal mining activity in the flathead river drainage system montana the analysis supports a negative association for this particular study area the effect of distance on preservation value was considered both directly and indirectly through its effect on visits 36 references 2 tables

happiness and productivity some firms say they care about the well being and happiness of their employees but are such claims hype or scientific good sense we provide evidence for a classic piece rate setting that happ

complements substitutes budget constraints and valuation this study employs a multi program contingent valuation cvm design tosimultaneously assess the value of three ecosystem conservation programsin alberta canada the design is different from most other cvm designsand has several different features including the natural incorporation ofdirect reminders of substitute complementary programs and budgetconstraints in contrast to the findings of other studies two of the environmentalprograms appear to be complements and other combinations of the programssuggest an absence of substitution effects the multi program model ismore informative and robust in terms of theoretical validity and expectedrelationships with demographic and recreational characteristics of therespondents

directional heterogeneity in distance profiles in hedonic property value models abstract in environmental economics hedonic property value hpv models have often employed distance from a localized environmental disamenity as a proxy for perceived risk the magnitude of a distance effect on housing prices however may depend upon the direction in which it is being measured we generalize conventional distance models to allow for continuously varying directional effects by converting from cartesian to polar coordinates a simple empirical example for housing prices around woburn massachusetts between 1988 and 1996 illustrates how failure to allow for directional heterogeneity can obscure otherwise statistically significant distance effects in hpv

a note on the welfare effects of omitting substitute prices and qualities from travel cost models the bias to welfare estimates from omitting substitute prices or qualities in travel cost models is examined the presence of bias depends on whether single or multiple site changes are examined and the degree of correlation between the omitted and included prices for a multiple site price or quality change even when omitted price is uncorrelated with included price welfare estimates may be biased alternatively if omitted price is perfectly correlated the welfare measure may not be biased the presence of the bias depends equally on both the degree of correlation and whether a single or multiple change occurs this abstract was borrowed from another version of this item

how large is the extent of the market for public goods evidence from a nationwide contingent valuation survey to assess the extent of the geographic area over which to sum vertically the public good benefits of removing two dams and restoring salmon populations households were surveyed throughout the us households were asked a dichotomouschoice contingent valuation question regarding their willingness to pay higher federal taxes for ten years to remove the dams and restore salmon populations while the distance from the site of the dam removal is statistically significant and negative in the logit willingness to pay equation benefits per household fall off slowly and the extent of the market is nationwide with a majority of households living outside the immediate area of the dam the rest of the us households reflect 97 of the national benefits for dam removal and salmon restoration this example suggests that failure to account for the national public good market can result in a serious underestimate of the value of public goods

australasian money demand stability application of structural break tests estimates of the demand for money provide important foundations for monetary policy setting but if the estimation technique does not explicitly account for structural changes then such estimates will be biased this paper presents an investigation into the level and stability of money demand m1 for australia and new zealand over the 1960 2009 period and demonstrates that both countries experienced regime shifts australia also experienced an intercept shift application of four time series methods provide consistent results with 1984 and 1998 break dates cusum and cusumsq stability tests reveal that m1 demand functions were unstable over the 1984 to 1998 period for both countries although tests for stability are not rejected thereafter

good day sunshine stock returns and the weather psychological evidence and casual intuition predict that sunny weather is associated with upbeat mood this paper examines the relationship between morning sunshine in the city of a country s leading stock exchange and daily market index returns across 26 countries from 1982 to 1997 sunshine is strongly significantly correlated with stock returns after controlling for sunshine rain and snow are unrelated to returns substantial use of weather based strategies was optimal for a trader with very low transactions costs however because these strategies involve frequent trades fairly modest costs eliminate the gains these findings are difficult to reconcile with fully rational price setting

unobservables in consumer choice residential energy and the demand for comfort a model of consumption of residential energy in dwellings is developed distinguishing between attributes of housing that provide direct benefits to consumers and attributes that serve as inputs in the production of final goods for example the thermal comfort of dwellings empirical estimates are made of the mode based upon the annual housing survey and the results are used to calculate the effects of changes in energy prices on the consumption of housing residential energy and other goods the analysis suggests that the adjustment process within the housing market permits a great deal of substitution in response to energy price changes copyright 1989 by mit press

the effect of consumers real world choice sets on inferences from stated preference surveys for stated preference sp studies we develop a model that assesses the influence of choice set misspecification arising from the omission of perceived substitutes among real world alternatives in the same class of goods this problem is most likely to be present when individuals are allowed to select a no purchase option instead of being forced to choose from an explicit set of sp alternatives with hypothetical attribute levels a convenient feature of our model is that researchers do not need to know exactly which omitted real substitute the individual most prefers only the set of real substitutes that exists in our empirical illustration a comparison of rival models suggests researchers who overlook the presence of perceived real alternatives related to an sp experiment can end up with noticeably biased welfare estimates our more general model suggests that it may be prudent for future sp researchers to anticipate then test and possibly correct for distortions in utility parameter estimates that result from this problem

sequencing and valuing public goods abstract this paper establishes several propositions concerning the importance of context in valuing public goods it first provides necessary and sufficient conditions for the value of a public good to be independent of context utility constant valuation sequences are considered where public goods are systematically made available or taken away for the case of strict hicksian substitutes willingness to pay for an increase in one of the public goods is strictly decreasing the farther out in a sequence it is valued for the destruction of public goods the reverse is true for willingness to accept compensation sequencing has opposite implications for the assessment of the benefits of providing public goods than for the assessment of the damage from destroying them

winter blues a sad stock market cycle and god said let there be light and there was light and god saw that the light was good genesis 1 3 depression has been linked with seasonal affective disorder sad a condition that affects many people during the seasons of relatively fewer hours of daylight experimental research in psychology has documented a clear link between depression and lowered risktaking behavior in a wide range of settings including those of a financial nature through the links between sad and depression and between depression and risk aversion seasonal variation in length of day can translate into seasonal variation in equity returns based on supportive evidence from psychology which suggests sad is linked closely with hours of daylight we consider stock market index data from countries at various latitudes and on both sides of the equator we model differences in the seasonal variation of daylight across coun

model of household electricity conservation behavior in this paper the authors develop a model that explains household choice of electricity conservation modes the model is based on the premise that households will adopt those conservation modes that yield benefits greater than perceived costs they find that households differ in the conservation modes they adopt high income households are more likely to adopt expenditure intensive methods while low income households are more likely to adopt time intensive conservation methods the results suggest a possible explanation as to why high income families and residents of single detached homes are observed to save the largest absolute amount of energy a popular explanation is that these households consume the most energy and thus would be most likely to benefit the authors suggest an alternative explanation 37 references 4 tables

the growth effects of education in australia in this article we estimate the growth effect of human capital with country specific time series data for australia in doing so we extended the solow 1956 growth model by using educational attainment as a measure of human capital developed by barro and lee 2010 the extended solow 1956 model performs well after allowing for the presence of structural changes our results based on alternative time series methods show that educational attainment has a small and significant permanent effect on the growth rate of per worker output in australia

directional heterogeneity of environmental disamenities the impact of crematory operations on adjacent residential values a hedonic study of residential house sales in rawlins wyoming was conducted to estimate the impact of an environmental shock from a new point source upon adjacent residential property values we use a unique data base of house sale prices and associated house attributes including structural and neighbourhood characteristics and geographic distances and directions from the source of the shock atmospheric emissions from a new crematory our data spans 27 months of house sales 7 months before and 20 months after the startup of crematory operations results indicate that proximity measured both in terms of direction and distance from the crematory imparts a statistically significant negative impact on average house sale prices an increase of 0 3 to 3 6 of average sale price for every one tenth mile increase up to one half mile in distance away from the crematory but depending on direction from the crematory this distance benefit increases somewhat with calendar time only for houses located west of

the short run residential demand for electricity the model of short run residential demand for electricity combines price schedule information obtained from the federal energy regulatory commission with household specific data from the 1972 73 consumer expenditure survey to determine the household s level of electricity consumption and relate it to the household s demographic profile and appliance stock the overall short run price elasticity estimate of 0 550 supports existing findings that short run residential electricity demand is price inelastic however the variation in elasticities across end use categories suggests that the overall response is made up of a complex set of responses that vary substantially and significantly across appliances this implies that it may be more efficient to tailor conservation policies to the stock configuration of the population 17 references 6 tables

the effects of experience on preferences theory and empirics for environmental public goods this article develops a choice model for environmental public goods which allows for consumers to learn about their preferences through consumption experiences we develop a theoretical model of bayesian updating perform comparative statics over the model and show how the theoretical model can be consistently incorporated into a reduced form econometric model our main findings are that in a random utility model rum discrete choice model a subject s scale should increase and the variability of scale should decrease with experience if subjects are bayesians we then estimate the model using field data regarding preferences for one particular public good water quality we find strong evidence that additional experience increases scale thereby making consumer preferences more predictable from the econometrician s perspective we find supportive but less convincing evidence that experience decreases the variability of scale across subjects

analysing the social benefits of soil conservation measures using stated preference methods the paper estimates the benefits of programmes to mitigate the off site impacts of soil erosion for a watershed in andalusia spain two stated preference methods are used namely choice experiments and contingent valuation to obtain estimates of the social benefit from soil erosion reductions under two different methodologies we emphasise the relative merits of the choice experiment method to provide useful inputs to policy design however employing both methods allows us to undertake a convergent validity test and thus to provide more defensible social benefit estimates the attributes used in the choice experiment include water quality impacts which we find to have the highest marginal values impacts on wildlife and the area subject to a control programme the contingent valuation design includes an attempt to reduce bias by reminding respondents about substitutes results are used to suggest upper limits on per hectare payments for soil conservation programmes

what do twins studies reveal about the economic returns to education a comparison of australian and us findings conventional estimates of rates of return to education are constrained because they are unable to isolate the returns to schooling from the contribution of individual ability and the influence of family background potentially studies using a sample of twins may overcome these problems monozygotic twins are genetically identical and if they have been reared together share the same family background differences in income between identical twins can therefore be associated with differences in the amount of education they have undertaken in order to estimate the independent influence of education comparisons of such estimates with estimates made from a sample of dizygotic twins who are genetically similar but not identical and who are also reared together may permit evaluation of the biases associated with ability and family background in conventional estimates of the return to education in an important paper jere behrman et al 1977 analyzed data from a sample of male world war ii veteran twins and found that of the overall rate of return to schooling of 8 percent 2 7 percentage points could be attributed to schooling per se 3 2 percentage points could be attributed to genetic factors and 2 1 percentage points could be attributed to shared family environment in a recent paper however orley ashenfelter and alan krueger 1994 have estimated the economic returns to education using data on a new sample of twins which permitted them to adjust their estimate for omitted ability variables and measurement error on this basis they find that family and genetic effects make virtually no contribution to the returns to schooling measurement error however biases the estimated return to schooling downward the findings of ashenfelter and krueger 1994 are very different from previous work in this field and there is now some confusion as to what analysis of twins data really reveals about the economic returns to schooling ashenfelter and krueger s results are based on analysis of data for a sample of 298 individuals 149 pairs of identical twins who attended a twins festival in 1991 they remark at the end of their paper only additional data collection is likely to lead to better estimates of the returns to schooling p 1171

effects on welfare measures of alternative means of accounting for preference heterogeneity in recreational demand models multiattribute revealed preference data are used to investigate heterogeneity in a sample of kayakers for a panel of whitewater sites in ireland this article focuses on a comparison of preference heterogeneity using a random parameter logit model with correlated tastes and a latent class model in terms of the implications for welfare measures of environmental quality and site access changes recreationalists skill levels are found to affect preferences in both approaches statistics for the estimated distribution of welfare changes for the average respondent are computed for changes in site attributes but contrary to previous work these are found to be of similar magnitude

controlling for the effects of information in a public goods discrete choice model this paper develops a reduced form method of controlling for differences in information sets of subjects in public good discrete choice models using stated preference data the main contribution of our method comes from accounting for the effect of information provided during a survey on the mean and the variance of individual specific scale parameters in this way we incorporate both scale heterogeneity as well as observed and unobserved preference heterogeneity to investigate differences across and within information treatments our approach will also be useful to researchers who want to combine stated preference data sets while controlling for scale differences we illustrate our approach using the data from a discrete choice experiment study of a biodiversity conservation program and find that the mean of individual specific scale parameters and its variance in the sample is sensitive to the information set provided to the respondents

test retest reliability of choice experiments in environmental valuation the paper presents the results of the first test retest study on choice experiments in environmental valuation in a survey concerning landscape externalities of onshore wind power in central germany respondents answered the same five choice sets at two different points in time each choice set comprised three alternatives described by five attributes and the time interval between the test and the retest was eleven months the analysis takes place at three different levels investigating choice consistency at the choice task level and repeatability of the latent construct utility at the level of parametric models as well as at the level of willingness to pay estimates at the choice task level we observed 59 identical choices the parametric analysis shows that the test and retest estimates are not equal even when we control for scale that is differences in the error variance however comparing the marginal willingness to pay estimates among test and retest reveals only a statistically significant difference for one of the attributes overall this indicates a moderate test retest reliability taking into account that consistency at the choice task level overlooks the stochastic nature of the process underlying discrete choice experiments

using neuroeconomics to understand environmental valuation contingent valuation choice experiments and other stated preference methods are frequently used to capture the nonmarket valuation of natural resources and ecosystem services the emerging field of neuroeconomics which assesses the neuroscience underlying decision making plots a promising course to explore the mechanisms underlying complex environmental valuation decisions neuroeconomic methods offer a unique capacity to isolate value components that contribute to willingness to pay wtp separating an individual s response to natural resource attributes that are of interest to economists from other attributes or influences on the decision process neuroimaging data can also aid in understanding differences in response between preference elicitation techniques and identifying the use of different decision processes and heuristics during valuation this article surveys the benefits and limitations of using neuroeconomics methods to assess the value of environmental goods and focuses on three examples where neuroeconomics may inform environmental valuation protest responses comparison of hypothetical and consequential choice contexts and the evaluation of environmental attributes and optimization of study design in stated choice experiments neuroeconomics methods offer a foundation for positive collaboration between environmental economists and cognitive neuroscientists yielding metrics that complement and augment current stated preference methods of determining environmental valuation

sad or happy the effects of emotions on stated preferences for environmental goods a substantial literature in behavioural science and psychology shows that emotions affect human choices and values this paper investigates whether such emotional impacts are also present in stated choice experiments for environmental goods if this were so it would introduce an additional element of context dependence to the welfare measures derived from such methods and would be at odds with the rational choice model underlying welfare economics a laboratory experiment using three different emotion treatments was combined with a stated preference choice experiment concerned with changes in coastal water quality and fish populations in new zealand no statistically significant effects of changes in emotional state on estimated preference parameters willingness to pay or the randomness of choices were found the paper concludes by questioning why such a contrast exists with empirical findings in behavioural science

foreign direct investment income and environmental pollution in developing countries panel data analysis of latin america abstract effects of foreign direct investment fdi and income on pollution emissions are examined using time series data from 1980 to 2010 for 14 latin american countries specifically we test the validity of pollution haven hypothesis phh and environmental kuznets curve ekc hypothesis for this region results from panel fixed and random effects models that controlled the effects of physical capital energy human capital population density and unemployment rate indicate the validity of both the phh and ekc hypothesis estimating two separate models for high and low income countries does not alter the findings for the phh however the impacts of human capital on pollution emission are found to be different for the two groups of countries policies that focus on attracting clean and energy efficient industries through fdi have potential to improve environmental health while enhancing economic growth in latin america