theoretical and empirical advantages of truncated count data estimators for analysis of deer hunting in california truncated poisson and truncated negative binomial count data models as well as standard count data models ols nonlinear normal and truncated nonlinear normal mle were used to estimate demand for deer hunting in california the truncated count data estimators and their properties are reviewed a large sample n 2223 allowed random segmenting of the data into specification estimation and out of sample prediction portions statistics of interest are therefore unbiased by the specification search and the prediction results allow comparison of the statistical models robustness the new estimators are found to be more appropriate for estimating and predicting demand and social benefits than the alternative estimators based on a variety of criteria

generalized travel cost model and water quality benefits a reconsideration with federal agencies required to conduct benefit cost analyses for each new major regulation analyses of water quality changes are likely to be an increasingly important part of the policymaking process a revised version of the travel cost demand model and illustrations show the importance of these revisions for the model s estimates although the magnitude of the difference in benefit estimates between the original and new versions of the model varies with the specific recreation site selected the findings indicate that the original model generally implied estimated benefits from three to over 30 times as large as the revised model this implies that judgment can play an important role in the definition and use of economic models as well as the need for better information on households recreation decisions and more complete description of recreation site characteristics 15 references 4 tables

consumption effects of genetic modification what if consumers are right this paper develops a model of differentiated consumers to examine the consumption effects of genetic modification gm under alternative labelling regimes and segregation enforcement scenarios analytical results show that if consumers perceive gm products as being different than their traditional counterparts gm affects consumer welfare and thus consumption decisions when the existence of market imperfections in one or more stages of the supply chain prevents the transmission of cost savings associated with the new technology to consumers gm results in welfare losses for consumers the analysis shows that the relative welfare ranking of the no labelling and mandatory labelling regimes depends on i the level of consumer aversion to gm products ii the size of marketing and segregation costs under mandatory labelling iii the share of the gm product in total production and iv the extent to which gm products are incorrectly labelled as non gm products

theoretical and empirical specifications issues in travel cost demand studies the ultimate objective of empirical travel cost demand studies is to obtain an estimate of the welfare derived from utilizing outdoor recreational resources thus it is apparent that travel cost demand equations must be linked to utility maximization deyak and smith freeman bockstael and mcconnell hanemann bockstael hanemann and strand we specify a model of utilitymaximizing recreation demand behavior which postulates that individuals choose the total number of days that they wish to spend at the recreation site this total number of recreation days is the product of the number of trips

country of origin effects on product evaluations this article reviews the literature regarding the effect of country of origin on buyer evaluations of products the issue is important for countries especially resource poor developing countries that need to increase manufactured exports and for firms that source products in countries different from where sold marketing inferences are drawn and implications for future research are developed

joint recreation choices and implied values of time a model of joint recreation quantity choices is developed individuals choose both total time spent at distant sites and the number of trips taken implicitly choosing average on site time the model permits nonzero marginal utility of travel makes on site time endogenous and is linear in the constraints the scarcity value of time is analyzed without assuming the marginal utility of work time is zero a partially testable assumption about relative marginal values of travel and on site time yields nonparametric calculations of the scarcity value of time and marginal values of trips and days on site from people s observed optimal quantity choices

quasi and simulated likelihood approaches to censored demand systems food consumption by food stamp recipients in the united states a quasi maximum likelihood estimator is proposed and applied to a censored translog demand system for foods using a sample of food stamp recipients in the united states the procedure produces remarkably close parameter and elasticity estimates to those of the simulated maximum likelihood procedure a two step procedure is also considered but it produces different elasticities demands are found to be price elastic for pork and fish but price inelastic for all other food products gross complementarity and net substitutability are obvious but these cross price effects are much less pronounced than own price and total food expenditure effects copyright 2003 oxford university press

assessing the impact of country of origin on product evaluations a new methodological perspective a new methodological approach for examining the impact of country of origin on product evaluations is proposed it takes the form of a multiattribute attitudinal model analyzed by means of a system

zero observations and gender differences in cigarette consumption censoring mechanisms and gender differences are investigated for cigarette consumption by individuals in the usa the gaussian single hurdle model is proposed which generalizes the specifications of cragg 1971 and heckman 1979 and allows examination of the empirical relevance of the two censoring mechanisms in the existing double hurdle model the proposed model performs better than cragg s and heckman s models but not as well as the double hurdle model and also produces different elasticity estimates the hypothesis of equal consumption parameters is rejected and demand elasticities found to differ between men and women income does not play a role and age has conflicting effects on the probability and level of cigarette smoking older individuals are less likely to smoke but conditional on smoking consume more cigarettes than their younger counterparts education has negative effects on the probability and level of smoking and can be an effective tool to curtail cigarette smoking

inserting gm products into the food chain the market and welfare effects of different labeling and regulatory regimes the purpose of this article is to examine the system wide effects of the introduction of genetically modified gm products with and without labeling and to compare these two regimes to a third regime where gm products are not present either because they have not yet been developed or because they have been banned for each regime the decisions and welfare of consumers producers and life science companies are examined the article explicitly incorporates the consumer response to the introduction of gm technology and considers different market structures of the life science sector

eco labelling consequences in general equilibrium a graphical assessment international environmental groups propose to implement new standards of forest management through programs that certify producers who meet criteria to enhance biodiversity or sustainability these producers could earn an eco label that identifies their products for consumers we consider whether a market economy might generate feedbacks that produce undesirable side effects as consumers respond to price changes while the general case is ambiguous the theoretical framework shows the potential that certification may lead to a reallocation of land toward less ecologically sustainable uses with the possibility of sufficient impact to diminish global biodiversity or sustainability of forest products

determinants of individual tourist expenditure as a network empirical findings from uruguay abstract this paper introduces the use of graphical models for assessing the determinants of individual tourist spending these models have the advantage of synthesizing and visualizing the relationships occurring within large sets of random variables through an easy to interpret output to this end individual data from a large official survey of international tourists in uruguay are used symmetric conditional independence structures are first investigated then subgraphs of each expenditure item s neighbourhood are extracted in order to assess the impact of main effects and interactions through proportional ordinal logistic regression results highlight the marginal role of socio demographic variables and direct importance of accommodation type destination and length of stay

estimating fishing and hunting leisure spending shares in the united states abstract we apply a bivariate censored demand system to estimate hunting and fishing trip related spending shares in the united states using data from off site surveys the approach considers fishing and hunting destination decisions and includes respondents who were inactive i e did not hunt or fished in a particular season the statistical significance of correlation coefficient parameter supports the use of a joint e g bivariate rather than separate e g univariate decision modeling process for fishing or hunting share equations most individual characteristics are statistically significant as explanatory variables respondents holding recreation licenses tended to spend significantly more on recreation than those without licenses all own price and cross price elasticities are statistically significant and suggest that hunting and fishing are complements the results also suggest that the popularity of hunting may decline as the population ages

innovation and trade with endogenous market failure the case of genetically modified products a partial equilibrium two country model is developed to analyze implications from the introduction of genetically modified gm products in the model innovators hold proprietary rights farmers are competitive adopters some consumers deem gm food to be inferior in quality to traditional food and the mere introduction of gm crops affects the costs of non gm food because of costly identity preservation among the results derived it is shown that although gm innovations have the potential to improve efficiency some groups can be made worse off indeed it is even possible that the costs induced by gm innovations outweigh the efficiency gains

modeling food consumption decisions as a two step process this article evaluates the suitability of tobit analysis of food consumption patterns by comparing results generated by a tobit model and a modification with a two step decision process two samples of adult women were selected from the 1977 78 nationwide food consumption survey and the 1985 continuing survey of food intakes by individuals results show strong statistical evidence for questioning tobit analysis in examining food consumption decisions determinants of the decision to consume food within a particular food group often differ from the determinants of how much to consume particularly for more highly defined food groupings analysis of u s food consumption patterns and their dietary aspects with respect to consumer behavior has a long history traditionally ordinary least squares ols or some variant has been used in many studies where ols was not appropriate the tobit method was applied tobit allows for a discrete mass point for observations as well as a continuous range of values for the dependent variable this nonlinear method has yielded good results in a variety of studies e g mccracken and brandt lane and devaney and fraker this article examines the suitability of the tobit method for analysis of food consumption patterns the tobit method assumes that the decision to consume a given food item is the same as the decision about the amount of the food to consume ignoring the two step nature of the decision process may hamper understanding of true behavioral patterns lead to erroneous conclusions and generate incorrect policy recommendations this article compares results generated by a tobit model and a modification with a two step decision process in the next section the statistical methods used to test whether food consumption is a one or two step decision process are described the following sections discuss the variables and data present the results and consider the conclusions

estimation of censored demand equations from large cross section data the article develops an alternative econometric methodology to estimate a system of censored demand equations using a large cross section data from colombian urban households the approach preserves the behavioralinformation expressed by zero expenditures and conforms with the requirements imposed by consumer theory in a way consistent with the random utility hypothesis we motivate the choice of the tobit modelas a statistical representation of consumer behavior and introduce the methodology by specifying the aids model modified according to both a translating and scaling demographic transformation we propose to estimate each demand equation in unrestricted form using the jackknife technique we then recover the demand parameters imposing the cross equations restrictions by using minimum distance estimation the empirical results of the censored demand system for specific households of policy relevance are reported copyright 2000 oxford university press

demand systems estimation with microdata a censored regression approach demand systems estimation increasingly makes use of household level microdata mainly to measure the effects of demographic variables data based on these household expenditure surveys present a major estimation problem for any given household many of the goods have zero consumption implying a censored dependent variable techniques which do not take this censored dependent variable into account will yield biased results we utilize a censored regression approach that is computationally simple consistent and asymptotically efficient the results are then presented and compared with those obtained using an uncensored technique

high and declining prices signal product quality high and declining prices signal a high quality product high prices are the efficient means of signaling because the consequent loss of sales volume is most damaging for lower cost lower quality products as time passes and the number of informed consumers increases the signaling distortion lessens resulting in a declining price profile the prediction of high and declining prices is robust across a variety of dynamic models and is consistent with recent empirical findings copyright 1991 by american economic association

using neoclassical consumer choice theory to produce a market map from purchase data this article presents a new model for estimating the spatial representation of objects and preference vectors from actual choice behavior of individuals or households it is based on neoclassical economic theory of consumer choice the model integrates both decisions of which good s to buy and the quantity of purchase overall preference is decomposed into price effects and intrinsic preference for the good a maximum likelihood method for estimating the model parameters is described and illustrated using choice data of ketchup brands collected by the use of electronic supermarket scanners

a structural equations approach to modeling consumptive recreation demand abstract in this analysis we develop a two equation structural model of a count travel cost model of recreational angling demand and angling success by modeling the two equations jointly we avoid the difficulties associated with the usual approach which estimates the demand for recreational fishing sites assuming the existence of an exogenous measure of fishing quality our analysis explicitly develops the joint log likelihood function that combines the two processes we estimate our model using full information maximum likelihood methods

on bias correction in the multivariate sample selection model heien and wessells two step estimator for the multivariate sample selection model has been used extensively during the past 15 years a modified version of it with slightly different selectivity regressors has also appeared in the empirical literature both estimators are unfounded and generally do not correct for the sample selectivity bias as intended but have continued to gain popularity in empirical applications the properties of the modified heien wessells procedure are investigated in both the bivariate and multivariate contexts and the conditions under which this estimator fails to correct for sample selectivity are examined the theoretical properties are demonstrated with a simulated random sample

cross section estimation of us demand for alcoholic beverage a flexible limited dependent variable model is used to examine us demand for alcoholic beverage parameterization and distributional assumptions of the double hurdle model cragg 1971 and tobit model tobin 1958 are rejected findings suggest that price income household composition and other characteristics have significant effects on alcohol consumption income and own price elasticities are significant but relatively small

food demand in mexico an application of the amemiya tobin approach to the estimation of a censored food system the modeling of micro level food demand patterns requires not only allowing for household heterogeneity but also addressing the problem of censoring in this article we present a variation of the amemiya tobin framework for estimating a censored demand system that allows for household heterogeneity the unique aspect of our approach is the use of a procedure that ensures the adding up of both latent and observed expenditure shares and also imposes expenditure share nonnegativity this system is applied to an analysis of food demand based on a random sample of urban mexican households

on doctors mechanics and computer specialists the economics of credence goods most of us need the services of an expert when our apartment s heating or our washing machine breaks down or when our car starts to make strange noises and for most of us commissioning an expert to solve the problem causes concern this concern does not disappear even after repair and payment of the bill on the contrary one worries about paying for a service that was not provided or receiving some unnecessary treatment this article studies the economics underlying these worries under which conditions do experts have an incentive to exploit the informational problems associated with markets for diagnosis and treatment what types of fraud exist what are the methods and institutions for dealing with these informational problems under which conditions does the market provide incentives to deter fraudulent behavior and what happens if all or some of those conditions are violated

costly diagnosis and price dispersion abstract in the standard search model under monopolistic competition when the consumer encounters a seller he knows the price before purchasing the commodity consequently the price cannot exceed the consumer s reservation price in a market with rational and homogeneous agents the price distribution must therefore be degenerate in markets for indivisible professional services the consumer does not necessarily know the price of the service when he encounters the seller this possibility arises when the cost of ascertaining the price the diagnosis cost is high and the consumer decides to enter the market without searching in contrast to the standard model under monopolistic competition price dispersion in equilibrium is possible even when fully rational economic agents on both sides of the market are homogeneous we characterize such equilibria and provide a sufficient condition for their existence we then study the effect of manipulating the search technology typically through a professional code of ethics on the equilibrium in markets for such professional services

a transaction cost rationale for private branding and its implications for the choice of domestic vs offshore outsourcing in this study i take a transaction cost approach to explore the coincidence of private branding with offshore outsourcing two retail trends that have attracted substantial attention but have never been analyzed concurrently retailers now play an increased role in marketing a product to shoppers although their marketing efforts are usually specific to the supplier who brands the product this is called brand specificity a special case of asset specificity that drives up the cost of conducting the manufacturer retailer transaction especially when the parties are located in different nations with the right to brand a product being shifted from manufacturers to retailers private branding can eliminate this problem of brand specificity that inflicts a transaction cost penalty on offshore outsourcing which is why the two seemingly unrelated retail trends coexist data obtained from a national chain reveal that the retailer is more likely to brand a product that needs its marketing efforts but less motivated to outsource the product offshore before putting a private brand on it these results establish a transaction cost link between private branding and offshore outsourcing from which important theoretical and practical implications can be drawn

working wives and food away from home the box cox double hurdle model household expenditures on food away from home are analyzed with the use of the bls 1989 consumer expenditure survey parameterization and distributional assumptions of cragg s double hurdle model are generalized for this purpose and the resulting model outperforms the more traditional ones results suggest households with working wives and those with higher income are more likely to consume food away from home and also to consume more than others wife s age and household size increase the conditional level of consumption education has conflicting effects on probability and conditional level of consumption

how should food safety certification be financed an analytical framework where consumers are imperfectly informed about the safety of products is used to investigate the welfare effects of a public certification system several certification fees under alternative structures of certification cost are analyzed by maintaining competition among numerous sellers voluntary certification financed by a per unit fee is efficient and sufficient to signal product safety however mandatory certification linked with a fixed user fee may be necessary if a seller wields monopoly power further certification by a single private agency results in a distorted fee copyright 2001 oxford university press

household demand for fats and oils two step estimation of a censored demand system a censored system of household fat and oil demand equations is estimated with a two step procedure using cross sectional data from the 1987 1988 us nationwide food consumption survey own price and total expenditure elasticities are close to unity and there is no evidence of gross substitutability compensated elasticities suggest net substitution among the products considered

estimating social welfare using count data models an application to long run recreation demand under conditions of endogenous stratification and truncation this paper develops a negative binomial model of recreation demand that corrects for both truncation and endogenous stratification this approach recovers the demand associated with the general population not just the users of the site this model demonstrates the importance of the joint nature of the population s latent demand for trips and the consumer surplus associated with those trips the empirical results provide an estimate of the willingness to pay by washington state residents for hiking opportunities in the cascade mountain range these results are used to forecast total trips and willingness to pay over the next forty years copyright 1995 by mit press

honesty in a model of strategic information transmission we consider the following simple model of consumer fraud consumers need one of two possible repairs an expensive repair denoted e or an inexpensive repair denoted i the exogenous probability that a consumer needs the more costly remedy is r each consumer is assumed to know r an expert can observe with certainty which of the two repairs is needed and can offer to sell either to the consumer in a simple extension we allow for uncertainty with respect to the expert s observation we assume that selling the expensive remedy to a consumer who needs only the inexpensive one is more profitable than selling the inexpensive one thus h eii h1 iji where h denotes profit and i denotes conditional on needing the profit functions are increasing in the price of the respective repairs for convenience we suppress the dependence of h on prices in our notation we also assume that a consumer prefers to obtain the appropriate repair to the inappropriate one thus u eie u ije and u iii u eii where u is the consumer s payoff lastly we assume that the functions u eje and u e i are decreasing in the price of the expensive repair and that u iie and u iii are decreasing in the price of the inexpensive repair we also assume that u iie is decreasing in the price of the expensive repair since the consumer ultimately buys the expensive repair in this case see below for further assumptions regarding the repairs we are interested in the equilibrium levels of honesty in this model how honest is the expert at the equilibrium do consumers always follow the expert s advice does the level of honesty increase as the interests of the agents become more similar in a sense to be defined below our assumptions are similar to those in the abstract strategic information transmission models of vincent crawford and joel sobel 1982 and jerry green and nancy stokey 1980 we follow the former paper which asks whether the signals sent become less noisy as the agents preferences become more similar despite the similarity of our model to crawford sobel s we arrive at some different conclusions with respect to the expert s honesty vis a vis the agents closeness of interests we explain this in detail in section iii in addition we allow that the expert may be uncertain about the true state of the world we also explicitly model the level of expert honesty which extends crawford sobel the outline of the paper is as follows in section i we provide the details of the model and show that a unique equilibrium exists comparative static results and a simple extension incorporating the assumption of the incompetent expert are given in section ii we draw comparisons with crawfordsobel in section iii in section iv we conclude with a brief summary

ecolabels and international trade in the textile and apparel market we provide a formal analysis of the welfare and trade implications of ecolabeling schemes we couch our analysis in the context of a stylized model of the textiles market between an industrialized north and a developing south textiles ecolabeling involves production process standards raising concerns of protectionism against the south we investigate several labeling scenarios labeling by north labeling by both north and south and harmonization this abstract was borrowed from another version of this item

eco labels as a multidimensional research topic trends and opportunities abstract this study analyzes the importance of ecolabels as an eco innovation tool that can contribute to the sustainable design production and consumption of products our research has a dual objective the first is to build a theoretical framework that explains the relationship between ecolabels and eco innovation their determinants demand supply and institutional and political influences and the dimensions that arise from them second according to this framework a systematic literature review was carried out to identify the trends and opportunities in ecolabeling as a multidimensional topic from empirical geographical and sectorial perspective the main contributions of this paper are a proposal for cyclical ecolabeling innovation process an understanding of the ecolabeling dimensions according to the studies analyzed and ecolabel performance in the market additionally the systematic literature review revealed that ecolabels have been mainly explored in food sectors and developed countries and researchers tend to assess their performance from the dimension of market dynamics

count data models and the problem of zeros in recreation demand analysis in this paper we develop a count data model for consumer demand which explicitly allows for a large number of zero observations for the dependent variable and separation of the participation versus quantity decisions the advantages of the model over traditional censored and count demand models are brought out and the appropriate consumer surplus measures are derived by introducing a random error term into the traditional count model demand function the appropriate measure of expected consumer surplus for count models is derived the model is illustrated using a recreational survey of the general population

japanese investors choice of joint ventures versus wholly owned subsidiaries in the us the role of market barriers and firm capabilities this study analyzes how market barriers and firm capabilities affect multinationals choice of joint ventures versus wholly owned subsidiaries abroad in the study we compile a vector of variables that distinguish between industry specific barriers and firm specific capabilities to analyze japanese investors ownership decisions in the us our results in general support the hypothesis that japanese investors facing high market barriers in the target industry are more likely to choose joint ventures while those possessing strong competitive capabilities are more likely to set up wholly owned subsidiaries specifically marketing variables are more influential than technological factors in determining the choice of partial versus full ownership these findings however vary across sub samples that represent low versus high tech industries and consumer versus industrial products

differentiating the consumer benefits from labeling of gm food products although recurrent evidence is found that consumers have different willingness to pay for gm and non gm products there is disagreement in the scientific community about the size of consumer benefits from gm labeling in this article we use a theoretical model based on a standard constant elasticity of substitution ces to explain the importance of the quality effect it is shown that failing to consider the quality effect may yield an overestimation of benefits from gm labeling voluntary or mandatory

green greener greenest eco label gradation and competition abstract this paper analyzes two common features of markets in which eco label programs certify that products are green gradation single programs offering multiple certification standards e g platinum gold silver and competition multiple programs vying to certify to their respective standards we find that depending on whether programs are sponsored by industry environmental groups or a government they have strikingly different incentives to grade or compete industry sponsors are indifferent about both environmentalist sponsors optimally grade or compete with other environmentalist sponsors only if consumer preferences for green consumption are skewed in a specific way and government sponsors decisions depend on the relative importance of private vs public benefits generated by the green market we find also that it is no accident that green markets frequently have an environmentalist program competing with an industry one for each of the cases examined our analysis is consistent with casual empirical evidence

information transmission in regulated markets the seminal papers of vincent p crawford and joel sobel 1982 and jerry green and nancy stokey 1980 study models in which a signal about the state of the world is transmitted from a perfectly informed sender to an uninformed receiver the authors study a model in which multiple signalers compete for consumers the authors ask how much information is revealed how consumers shopping around affects this information and how each is affected by incentives an implication of the model is that in a price regulated market for health care patients should not be prohibited from gathering more than one opinion

export and reverse investment strategic implications for newly industrialized countries multinational companies in a newly industrialized countries face a dilemma of whether and when they should engage in u s manufacturing this study investigates consumer evaluations of product quality and purchase intent of two electronic products currently imported into the u s from a company in a newly industrialized country and one electronic product currently not manufactured by the same company the results suggest that reverse investment in the u s may be a viable strategic alternative for companies in newly industrialized country traditionally engaged only in export activities if they pay careful attention to price and retail distribution in the u s

coupon redemption and its effect on household cheese purchases by endogenizing unit value and coupon redemption we estimate u s household cheese purchase quality choice and coupon redemption equations simultaneously zero purchases and missing values on coupons and unit values are taken into account in the model to correct for selectivity bias correlations among the three equations are found to be significant empirical findings show that high quality choice significantly decreases cheese purchases while cheese coupon usage significantly increases purchases we find that higher income households select higher quality cheese while larger households choose lower quality cheese for coupon redemption we find that african american and hispanic households redeem less while asian households have no significant difference compared to caucasian households

effects of consumer preferences for foreign sourced products when deciding on overseas production locations the manager must take into account not only resource and cost benefits but the effect that country of origin may have on consumer evaluations an experiment conducted by a telephone survey procedure examined country of origin perceptions of twelve countries and eight products using both perceived quality and choice measures as hypothesized preferences were found to be more product specific for industrialized than less developed countries in addition hypotheses that performance risk and brand moderate the effects of country were upheld under most conditions

estimation and welfare calculations in a generalized corner solution model with an application to recreation demand the kuhn tucker model of wales and woodland 1983 provides a utility theoretic framework for estimating preferences over commodities for which individuals choose not to consume one or more of the goods due to the complexity of the model however there have been few applications in the literature and little attention has been paid to the problems of welfare analysis within the kuhn tucker framework this paper provides an application of the model to the problem of recreation demand in addition we develop and apply a methodology for estimating compensating variation relying on monte carlo integration to derive expected welfare changes

voting for environmental policy under income and preference heterogeneity we examine the design of policies for promoting the consumption of green products under preference and income heterogeneity using organic food products as an example two instruments are considered a price subsidy for the organic food products and a tax on the conventional products under income disparity consumers with high income always prefer a socially optimal subsidy to a socially optimal tax while low income consumers prefer a tax on conventional products when environmental policy is determined by the median voter the policies implemented tend to be stricter than socially optimal policies if income differences are large

using count data models in travel cost analysis with aggregate data estimators of recreational demand models frequently use continuous functional forms such as ordinary least squares ols on log transformed variables e g ziemer musser and hill however the nature of trip demand introduces complicating factors first trips occur in nonnegative quantities failure to control for this censoring will lead to biased estimation second because trips are available only in integer quantities the usual demand models which correlate marginal quantity with marginal price may be inapplicable in light of these factors a natural alternative is to use statistical models that explicitly recognize the count nature of trip demand several recent papers e g shaw smith grogger and carson creel and loomis have applied count models to the travel cost model these works largely have focused on truncated data sets based on choice based samples in this study the focus is on the older problem where zero demanders are included in particular the application of several robust estimators of count models to aggregated data will be considered the poisson distribution forms the foundation for the count models examined in this study although the poisson is a convenient distribution to work with it imposes some stringent constraints on the demand distribution in particular the poisson distribution assumes the variance of trip demand is equal to the expected value of trip demand to loosen these constraints a generalization of the poisson the negative binomial is discussed robust estimation procedures that permit further loosening of a priori assumptions are then reviewed permit data from the boundary waters canoe area are used to examine the effects of these count models on consumer surplus estimates and on coefficient variability

partitioning country of origin effects consumer evaluations of a hybrid product recent cases in strategic alliances observed in the u s automobile and numerous other consumer product industries point up an important area of research that has not received enough attention in the literature complex products involving multiple country affiliations have become much more common

market and welfare effects of second generation consumer oriented gm products we examine the economic effects of the introduction of consumer oriented genetically modified gm products into the food system by developing a model of heterogeneous consumers and producers that allows for vertical and horizontal differentiation between the products available to consumers the model facilitates the estimation of consumer and producer surpluses in the product utility and product net returns spaces results show that the introduction of consumer oriented gm products can change the relationship between gm and conventional and organic products from one of vertical to one of horizontal product differentiation and can enhance both economic welfare and the market acceptance and growth of agricultural biotechnology

ethics welfare and markets an economic analysis the present article examines society s welfare when goods with identical physical attributes can be produced using two alternative technologies one of them less ethically desirable but less expensive for at least some producers for the scenario where identification costs must be borne by producers and consumers of the high quality good the outcome under unregulated markets is identical to the optimal solution of a central planner constrained to neither ban the undesirable technology nor segregate the low quality good however under certain circumstances the unregulated market equilibrium may be improved upon by government intervention that shifts the burden of identification costs to the producers of the low quality good or which bans the production of the low quality good the optimal intervention needs to be determined case by case and depends on consumer preferences relative production costs and relative costs of identification and fraud prevention

multinational production effect on brand value direct foreign investment in manufacturing abroad has a number of consequences for the firm one aspect particularly salient when the company s image is tied to its home country is the impact of the dfi upon customer perceptions of the brand the present study shows how changes in perceptions can be assessed prior to the investment decision and how the brand value consequences of a particular location can be estimated the proposed method is illustrated using data from a japanese company s entry into the u s

a difficulty with the travel cost method instead of observable prices of recreational visits travel cost method tcm re searchers are obliged to substitute researcher assigned visitation cost estimates i argue that visitation costs are inherently subjective but are ordinally measurable so long as the cost in creases with distance travelled it follows that traditional tcm yields only ordinally measur able welfare estimates the household produc tion function formulation of tcm resolves this problem only by imposing severe and un testable analytical restrictions tcm cannot serve as a stand alone technique for estimating recreation benefits rather it must be calibrated using information generated with fundamentally different methods jel q26

green business and blue angels this paper presents a model of a monopolist svoluntary overcompliance with legal environmentalstandards under asymmetric information about thefirm s environmental impacts the key assumptions are the existence of quality premia for environmentalsoundness a positive but imperfect degree ofmonitoring and adaptive consumer expectations conditions necessary for overcompliance to arise in aprofit maximizing equilibrium are derived the effectsof a third party eco labeling system are analyzed itis shown that the existence of an independent labelingauthority increases the likelihood of overcomplianceto be profit maximizing moreover firms might have anincentive to lobby for the introduction of such asystem the effect of consumers risk preferences andan instrument for preventing greenwash companieslying about their environmental performance is alsodiscussed

estimation of a two level demand system with limited dependent variables a two level demand model was derived from a strongly separable conditional indirect utility function to analyze dominican rural and urban household consumption at different income levels for samples with significant zero consumption a multivariate limited dependent variable model utilizing the concept of virtual prices was used to obtain consistent estimates of consumption parameters results show that households with higher incomes tend to be less responsive to own price and income changes in consumption of most food and nonfood commodities for demographic variates the elasticities of rice and aggregate food with respect to household composition variables are all positive with few exceptions price and income responses of household food and nonfood consumption have significant policy importance this study provides insights into the consumption behavior of rural and urban dominican households within the framework of a complete demand system three basic groups of determinants of household consumption are explored commodity prices household total expenditure and demographic variables our treatment of these fundamental issues involves the application to demand analysis of a a classical theoretical result about commodity decentralization and price aggregation and b an econometric technique to deal with limited dependent variables in the demand system framework the analysis of detailed commodities is often prohibitive because increasing the size of the demand system substantially increases the number of unknown parameters to estimate a relatively large number of parameters in this study the theoretical implications of twostage budgeting and perfect price aggregation are used to construct a two level demand model that is consistent with constrained util

genetically modified crops their market and welfare impacts a framework is developed for examining price and welfare effects of the introduction of genetically modified gm products in the short run non gm grain generally becomes another identity preserved product however more profound market effects are observed under some reasonable parameterizations when calibrated to reflect the u s corn market introducing gm technology increases aggregate welfare over a wide range of scenarios unless the corresponding production cost savings are small and consumers are seriously concerned about gm products the possibility that gm technology may reduce aggregate welfare is interesting because the model assumes rational agents and does not include regulatory constraints

a censored system of cigarette and alcohol consumption many previous studies of us cigarette and alcohol consumption have focused on single equations however the addictive nature of consumption suggests that it is more appropriate to model these products as a system we propose a two step estimation procedure and apply the procedure to a system of equations for cigarette beer and wine consumption results differ from those derived from an existing two step procedure findings suggest that consumption of cigarettes beer and wine is responsive to income changes but the elasticities are rather small personal physiques education age race ethnicity health gender employment status and regions also play significant roles in consumption