public employment and the welfare state in sweden this is a nontechnical summary of a much longer study which will appear with the same title in richard freeman birgitta swedenborg and robert topel eds forthcoming i am especially indebted to henry ohlsson and birgitta swedenborg and to stan engerman vic fuchs assar lindbeck stephen lundgren and agnar sandmo for comments on initial drafts i alone am responsible for the views expressed here

trading in exhaustible resources in the presence of conversion costs a general equilibrium approach we survey the literature on the general equilibrium approach to trade in exhaustible resources and present a model in which conversion costs are incorporated and in which the usual balance of payments condition is relaxed it is found that in many cases the problem of dynamic inconsistency will arise

meta analysis in model implementation choice sets and the valuation of air quality improvements this research illustrates how the methods developed for meta analysis can serve to document and summarize voluminous information derived from repeated sensitivity analyses our application is to the sensitivity of welfare estimates derived from discrete choice models to assumptions about the choice set these assumptions affect welfare estimates through both the estimated parameters of the model and conditional on the parameters the substitution among alternatives in our specific application the evaluation is in terms of estimated benefits of air quality improvements in los angeles based on discrete choices of neighborhood and housing copyright 2007 john wiley sons ltd

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

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

health care education and the cost disease a looming crisis for public choice an economic specter haunts the democratic governments of the world s most prosperous economies the rising cost of health care and education casts a shadow over virtually every election while increasing costs of other services play a part in the growth of the homeless population and the deteriorating sanitation of city streets it will be shown here that both an explanation and a solution in principle are available however while the solution is in one sense simple and straightforward in another it poses a problem of frightening magnitude for public choice if the citizens of these countries are willing to do what is necessary for the supply of educational health care and other related services to keep up with the expansion in overall economic output made possible by rising productivity then if my analysis is correct a difficult choice will be required either ever more of gross national product will have to be channeled through the public sector with all the problems we know that to entail or alternatively these services will have to be transferred to private enterprise in fields where private business firms can hope to succeed only if granted an improbably immunity from the temptation of unwise governmental interference this is indeed scylla and charybdis in spades

two stage estimation to control for unobservables in a recreation demand model with unvisited sites the role of unobserved site attributes is a growing concern in recreation demand modeling one solution in random utility models rums involves separating estimation into two stages where the rum is estimated with alternative specific constants ascs in the first stage and the estimated ascs are regressed on the observed site attributes in the second stage prior work estimates the second stage with ordinary least squares ols and two stage least squares regression we present an application with censored regression in the second stage we show ols produces inconsistent parameters when there are unvisited sites with no estimable ascs and that censored regression avoids this problem

modelling the effect of chronic wasting disease on recreational hunting site choice preferences and choice set formation over time chronic wasting disease cwd is a prion disease that affects deer elk and other cervid wildlife species although there is no known link between the consumption of cwd affected meat and human health hunters are advised to have animals from cwd affected areas tested and are advised against consuming meat from cwd infected animals government of alberta 2010 we model hunter response to the knowledge that deer in a wildlife management unit have been found to have cwd in alberta canada we examine hunter site choice over two hunting seasons using revealed and stated preference data in models that incorporate preferences choice set formation and scale we compare a fully endogenous choice set model using the independent availability logit model swait in probabilistic choice set formation in transportation demand models dissertation mit 1984 with the availability function approach cascetta and papola in transp res c 9 4 249 263 2001 that approximates choice set formation we find that cwd incidence affects choice set formation and preferences and that ignoring choice set formation would result in biased estimates of impact and welfare measures this study contributes to the broader recreation demand literature by incorporating choice set formation scale and temporal impacts into a random utility model of recreation demand

choice set formation for outdoor destinations the role of motivations and preference discrimination in site selection for the management of public expenditures on protected areas effective public expenditure currently dominates the management focus of many protected areas this calls for explicit modeling of constraints and motivations that respectively obstruct and stimulate visits to selected outdoor destinations choice set formation is the result of screening and or inclusion of specific sites alternatives to form the set of sites considered in real choices evidence shows that the omission of a structural representation of choice set formation is harmful to econometric inference yet the literature has largely ignored the underlying behavioral phenomenon we show using a discrete choice experiment involving selection among seven recreational sites in an italian national park that choice set formation is behaviorally relevant even after controlling for preference discrimination motivations why visit are important determinants of preliminary site screening for choice set inclusion as well as site selection justifying the additional value of such modeling extension

climate policy under factor mobility a differentiated case for capital taxation abstract in a general equilibrium model with two periods and a finite fossil resource i analyze the non cooperative climate policies of symmetric countries that are in competition for mobile factors of production capital and fossil energy the paper shows that countries that want to slow down climate change but are also concerned about tax revenues from mobile tax bases have a rationale to supplement environmental taxes on fossil fuels with source based capital taxes or subsidies more specifically countries find it beneficial to subsidize capital in period one and tax it in period two the first period subsidy on capital facilitates a higher environmental tax by counteracting its adverse effects and increases national and global welfare in equilibrium by contrast the capital tax in period two induces inter and intratemporal distortions that lead to lower welfare the rate of resource extraction is inefficiently high in equilibrium no matter which tax portfolio is at the governments disposal furthermore unintended green paradox effects of demand side policies are shown to arise even in general equilibrium with factor mobility finally factor mobility does not necessarily lead to a higher rate of extraction and lower welfare compared to autarky

market definition in antitrust analysis a regression based approach alleged violations of either sherman 2 s antimonopoly strictures or clayton 7 s proscriptions against anticompetitive mergers necessarily involve a particular product and must occur in a particular place that is the plaintiff in either a 2 or 7 suit must define a relevant market within which the violation alleged has occurred even in the most mundane antitrust analysis however market definition is rarely readily accomplished and unaccompanied by a series of caveats and the possibility of the opposing parties in an antitrust suit failing to contest each other s proffered definition is virtually nil 2 because economists from

an efficiency approach to choice set formation theory and application to recreational destination choice an unresolved debate in behavioural choice research surrounds specifying individual choice sets to overcome the limitations of deterministic and probabilistic approaches in a framework consistent with individual optimizing behaviour this study develops an efficient frontiers approach to the choice set problem in the context of revealed preference destination choice stochastic frontier models relating costly inputs to utility generating outputs are estimated to measure the efficiency of sites choice sets are then formed by retaining sites that exceed alternative efficiency thresholds choice set composition site choice efficiency and probability of selection and consumer surplus are evaluated in the case of fishery site choice in maine

how closely do hypothetical surveys and laboratory experiments predict field behavior we compare the ability of three preference elicitation methods hypothetical choices nonhypothetical choices and nonhypothetical rankings and three discrete choice econometric models the multinomial logit mnl the independent availability logit ial and the random parameter logit rpl to predict actual retail shopping behavior in three different product categories ground beef wheat flour and dishwashing liquid overall we find a high level of external validity our specific results suggest that the nonhypothetical elicitation approaches especially the nonhypothetical ranking method outperformed the hypothetical choice experiment in predicting retail sales we also find that the rpl can have superior predictive performance but that the mnl predicts equally well in some circumstances experiment

does the public sector implode from baumol s cost disease i introduction the origin of the baumol cost disease is lower none productivity growth for services than for manufactures the progressive sector see baumol and brown 1966 and baumol 1967 the public sector in most countries is an important provider of tax financed services such as health education and care the baumol cost disease is accordingly often taken to have fatal consequences for the public sector putting it on an unsustainable trajectory baumol 1993 in one version the argument runs as follows the relative costs of providing services increase and hence more and more resources are needed if the supply of services should match the supply of manufactured goods this leads to an ever increasing tax rate compare lindbeck 2006 and van der ploeg 2007 in another version the tax rate is considered given productivity increases enhance income and thus the tax base leaving more tax revenue however under baumol s cost disease this revenue gain is absorbed by increasing costs just to maintain an unchanged supply of public services an increasing gap between public provision of services and private consumption of manufactures thus evolves which in turn will leave the population increasingly dissatisfied with the public sector this reasoning is often encountered in analyses of fiscal sustainability the aim of such analyses is to assess the financial viability of tax financed welfare arrangements these analyses often make trajectories under the baumol assumption showing that it leads to ever increasing financial problems calling for reforms see for example imf 2014 adding increasing demands for services in particular health services when material living standards increase further adds to these problems 1 see for example hall and jones 2007 and oecd 2013 this appears to leave policy makers in a conundrum either the tax burden is ever increasing leading to an eventual collapse of the economy or the supply of public services would have to be restrained leaving an increasing gap between aspired and realized levels of public service provisions this article takes outset in the baumol assumptions concerning productivity differences baumol growth and asks whether the doomsday implications expounded in the literature and in policy debates are justified this article does not challenge the premises of the baumol argument on differences in productivity growth between manufactures and services 2 but the implications when accounting explicitly for service provision from both the private and public sectors a further starting point is the observation that simple predictions based on baumol growth rely on fixed proportions between private consumption and public service provision as well as neglecting labor supply although the baumol problem has a technological origin its implications cannot be seen independently of preferences and thus private responses as well as the optimal provision of public services this article accordingly differs from the standard literature in three aspects first explicit account is taken of service provision from both the private and public sectors 3 not all services are provided via the public sector and many of the examples used to exemplify the baumol problem are services in private production second a very general formulation of preferences is adopted to capture how technological changes map into changes in key variables and affect the scope for tax financed service provision finally public service provisions and thus taxes are endogenous to analyze how policies respond to the changes induced by the baumol process 4 to focus on the basic implications the model is kept as simple as possible and because no essential intertemporal margins are important the model is static see for example buera and kaboski 2012 rogerson 2008 the main finding of the article is that under baumol growth the doomsday implications for the public sector do not hold

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

latent consideration sets and continuous demand systems this paper develops a theoretically consistent continuous demand system model that incorporates latent probabilistic consideration sets in contrast to existing discrete choice consideration models the proposed model is econometrically tractable with consumption data for many goods the model s empirical properties are illustrated with an 89 site recreation data set from the 1994 national survey of recreation and the environment nsre parameter and welfare estimates suggest that the latent consideration set models fit the data better and may imply a bias variance tradeoff relative to traditional models

structural change in a multisector model of growth we study a multi sector model of growth with differences in tfp growth rates across sectors and derive sufficient conditions for the coexistence of structural change characterized by sectoral labour reallocation and constant aggregate growth path the conditions are weak restrictions on the utility and production functions commonly applied by macroeconomists we present evidence from us two digit industries that is consistent with our predictions about structural change and successfully calibrate the historical shift from agriculture to manufacturing and services we show quantitatively that reasonable deviations from our conditions do not have a big impact on the properties of the model

activities in models of recreational demand scholars have taken divergent approaches to incorporating on site activities into their empirical specifications of site choice models we provide a framework for assessing this methodological heterogeneity through a model that explicitly allows individuals to choose both on site activities and site attributes this model not only conditions the marginal value of site attributes on the choice of an activity but also explicitly recovers the marginal rates of substitution across activities this eliminates previously unrecognized biases in the welfare analysis of changes in site attributes we test hypotheses generated by our model by comparing rival models of demand for access to beaches in costa rica

on the extent of the market wholesale gasoline in the northeastern united states this paper develops the classical view of the extent of markets by introducing explicitly in the analysis the concept of arbitrage costs arbitrage or transaction costs imply that market boundaries are essentially stochastic while a set of products or regions may have binding arbitrage conditions i e may be in the same market at a given point in time they may not at another thus in defining a market the probability that a set of agents or regions would h3ve binding arbitrage conditions has to be assessed this paper develops an econometric methodology to estimate the transaction costs required to arbitrage among a given set of products as well as the probability that that set of products would be bound by binding arbitrage condi tions finally the methodology is applied to wholesale gasoline in the northeastern part of the united states address for communications pablo t spiller herbert hoover memorl l bldg 9348 stanford ca 94305

accounting for choice set endogeneity in random utility models of recreation demand abstract modeling the choice among a discrete set of recreation alternatives is driven by the possible patterns of substitution among sites researchers typically assume that the individual s choice set is the same as the set of alternatives included in the recreation survey instrument our endogenous choice set model is a generalization of the standard multinomial logit random utility model which allows for the possibility of heterogeneous choice sets that are endogenously determined in the model using two examples we show that parameter and compensating variation estimates differ greatly between the endogenous choice set model and the traditional logit model

the value of life and the rise in health spending over the past half century americans spent a rising share of total economic resources on health and enjoyed substantially longer lives as a result debate on health policy often focuses on limiting the growth of health spending we investigate an issue central to this debate is the growth of health spending a rational response to changing economic conditions notably the growth of income per person we develop a model based on standard economic assumptions and argue that this is indeed the case standard preferences of the kind used widely in economics to study consumption asset pricing and labor supply imply that health spending is a superior good with an income elasticity well above one as people get richer and consumption rises the marginal utility of consumption falls rapidly spending on health to extend life allows individuals to purchase additional periods of utility the marginal utility of life extension does not decline as a result the optimal composition of total spending shifts toward health and the health share grows along with income in projections based on the quantitative analysis of our model the optimal health share of spending seems likely to exceed 30 percent by the middle of the century

the length of stay in the demand for tourism abstract one of the main characteristics of current tourism is the reduction in the length of stay at a destination nevertheless this variable has received little attention in literature this paper examines the microeconomic determinants of the length of stay at one of the mediterranean s leading sun and sand destinations the estimation of a conditional demand function model highlights the explanatory power of the tourist s sociodemographic profile and of holiday characteristics as well as the sensitivity of the length of stay to price changes

the extent of information its relevance for random utility models this paper examines the effect of the researcher s definition of a recreator s choice set on the parameter and welfare estimates from standard random utility models three choice set definitions are compared choice sets based on all alternatives within the survey those alternatives within a specified distance from the respondents home and alternatives familiar to the individual we show that parameter and welfare estimates are sensitive to the definition of the choice set welfare measures of site closures differ in varying ways depending on the familiarity level of the sites in question

general equilibrium and international trade with exhaustible resources the pricing of raw materials from an exhaustible resource is predominantly analysed within the context of a partial equilibrium it is argued here that there are good reasons for a general equilibrium analysis in this paper we present an international trade model with exhaustible resources and characterize the general equilibrium properties the general perspective adopted leads to new insights compared with a partial equilibrium approach

brand choice and purchase frequency revisited an application to recreation behavior the role that total purchases play in determining the choice among brands has been considered in microeconomic theory for quite some time but for traditional goods only consumption of outdoor recreation is an unusual good most often measured using an individual s recreational trip adding the trips made on a number of choice occasions seems the obvious way to aggregate this good but doing so leads to several problems in defining a meaningful price index the hicks leontief conditions for aggregation suggest that trips to destinations may be thought of as brand choices on consumption occasions andthe continuous analogue to total purchases may in fact be the individual s total travel an empirical example of the model is used to estimate welfare impacts for a group of anglers

modelling choice and switching behaviour between scottish ski centres the paper identifies the need to model the skier s choice of centre and the basic ideas underlying discrete choice models and their estimation it then identifies data requirements and sources the final choice of specification and the estimated parameters of the resultant nested multinomial logit model the results indicate two quite distinct markets for day trippers snow cover cost and to a lesser extent the journey length were the critical factors for those staying overnight the key determinant in this market seems to be accommodation interestingly centres which for the day tripper are competitors become for the overnight customer complementary

general equilibrium in an economy with exhaustible resources and an unbounded horizon we show the existence of a general competitive equilibrium in an economy with exhaustible resources and an unbounded horizon the model is a generalization of several equilibrium models already known in the literature the method of proof uses a classical idea due to negishi extended to economies with an infinite dimensional commodity space brought about by the infinite horizon

narrow choice sets in a random utility model of recreation demand we consider the implications of narrow choice sets on welfare estimation in a random utility model of recreation demand we hypothesize that careful formulation of the choice set focusing on the sites of policy interest and their closest substitutes will give reasonably accurate welfare estimates we use nearby sites as close substitutes and treat more distant sites as aggregate alternatives in our application to fishing in maine we find that the welfare estimates are rather sensitive to narrowing choice sets in this manner the sensitivity largely tracts variation in the estimated travel cost coefficient across the different models considered