parents discount rates for child quality contemporary discussions of economic growth make human capital or knowledge accumulation its primary engine 25 human capital as the lead component of the stock of wealth defines a developed economy becker and murphy 4 show that human capital both increases and is increased by the scope of the market its rate of return rises with the size of its stock 5 human capital also plays significant roles in models of human fertility choice 40 population and environmental degradation 11 34 capital mobility 3 and endogenous technological progress 33 a substantial portion of an adult s human capital is accumulated during childhood children as children however cannot independently contract for the resources required to support investments in this human capital though nearly every society grants parents wide discretion about the nurture they provide their children little is understood about what motivates investment by one generation in another the relative importance of different investment modes or the discount rates which parents apply whatever the motivation and the mode because of the long time span between birth and adulthood parents discount rates potentially exert great leverage upon the investment decisions they make for their children knowledge of these discount rates is a prerequisite to acquiring an improved understanding of the internal decision processes of the household a collective decision unit which economics mostly treats as a black box 1 important policy questions as well as scientific accuracy and logical consistency demand knowledge of the discount rates parents apply to investments in their children healthier better educated and wealthier children have a better chance in life but there is no evident reason to suppose that intrafamily discount rates are socially optimal 2 many of the private reactions and behaviors which reinforce or temper the intended effects of public policies are internal to the household when these intended effects have a substantial temporal dimension parental discount rates will be influential for example increased public investments in children can be neutralized

a model for multiple brand choice abstract this paper considers a simultaneous choice model that describes consumer selection of multiple brands the proposed model considerably extends research possibilities in the demand area by relaxing the restrictive assumption of mutually exclusive alternatives which characterizes multinomial discrete choice methods an essential contribution lies in the explicit treatment of stochastic dependencies among latent brand utilities two empirical applications illustrate how the model determines brand demand functions and yields quantitative insights into the competitive structure of the examined markets an alternative specification of the multivariate simultaneous probit model assuming independent covariance structure is also addressed

retail fuel price adjustment in germany a threshold cointegration approach abstract consumers in germany often complain that retail fuel prices usually adjust quickly to crude oil price increases than decreases and characterize this pricing pattern as market power exploitation in this paper we use both weekly national and daily city specific berlin hamburg munich and cologne data to investigate the extent to which retail fuel prices in germany adjust to changes in the international crude oil price at the national level with weekly prices we find positive asymmetries for both gasoline and diesel within the period 2003 2007 reflecting that retail prices react more swiftly to crude oil price increases than decreases in contrast for 2009 2013 we observe symmetric adjustment and negative asymmetry for retail diesel and gasoline prices respectively the city level analysis supports our findings in the latter time period thus regulatory measures aimed at the retail fuel market over recent years seem to have been effective and contrary to consumers perception we find no evidence for excessive market power or collusion

rates of time preference and valuations of the duration of life abstract this paper develops a multi period markov model of the lifetime choice of occupational fatality risks the empirical model analyzes the wage effects of job risks using the 1982 university of michigan panel study of income dynamics in conjunction with death statistics from the u s national traumatic occupational fatality survey evidence regarding workers intertemporal choices with respect to risks with long term implications is broadly consistent with rational behavior workers implicit real rate of time preference with respect to future life years equals approximately 11 percent this rate of time preference decreases with education

efficient estimation of structural hedonic systems when a product or job is not homogeneous but instead embodies several different characteristics it is difficult to use price information about the product to learn anything about the structure of the supply and demand for the embodied characteristics s rosen 1974 highlighted this problem and suggested that the estimated slope of the price characteristic relation the marginal price could be used instead of standard prices in otherwise standard estimation of the supply and demand system however recently brown and h rosen 1982 brown 1983 and mendelsohn 1985 have pointed out that this method is applicable only when the marginal price depends on variables not found in the supply and demand equations in this paper we show that since the hedonic system matches consumers with high demand for the characteristic to firms with low costs of producing it exogenous variables from the supply equation are not valid instruments in the demand equation and vice versa therefore even when the brown rosen mendelsohn brm condition holds estimation of the identified system by standard simultaneous equations techniques will produce inconsistent estimates we then show that the system can be identified despite the absence of the standard instruments and develop an efficient estimator for the identified system since cross equation constraints make estimation of hedonic systems particularly vulnerable to specification error we also consider some specification tests in this section we consider a simple model with only one characteristic the extension to several characteristics is straightforward the basic model developed by rosen can be described as follows firms with different technologies produce products which provide consumers with varying levels of some characteristic z each consumer buys one unit of the good the product is such that an amount of z from two units of the good provides less utility than the same amount of z embodied in a single unit e g acceleration in a car safety in a job consumers

asymmetric error correction models for the oil gasoline price relationship abstract the existing literature on price asymmetries does not systematically investigate the sensitivity of the empirical results to the choice of a particular econometric specification this paper fills this gap by providing a detailed comparison of the three most popular models designed to describe asymmetric price behavior namely asymmetric ecm autoregressive threshold ecm and ecm with threshold cointegration each model is estimated on a common monthly data set for the gasoline markets of france germany italy spain and uk over the period 1985 2003 all models are able to capture the temporal delay in the reaction of retail prices to changes in spot gasoline and crude oil prices as well as some evidence of asymmetric behavior however the type of market and the number of countries which are characterized by asymmetric oil gasoline price relations vary across models the asymmetric ecm prescribes that long run price asymmetries are most likely to be found in the second stage of the transmission chain conversely the ecm with threshold cointegration suggests that long run price asymmetries vary across countries and markets short run price asymmetries are captured by the asymmetric ecm specification and the tar ecm the latter model suggests that all european countries are likely to be affected by asymmetries at the distribution stage while the results obtained with the asymmetric ecm are mixed

european gasoline markets price transmission asymmetries in mean and variance the main objective of this article is to analyse the different sources of asymmetric price transmissions in the fuel market for france germany and spain during the last decades the eu has carrie

discounting environmental health risks new evidence and policy implications abstract when environmental policy benefits accrue over a long time horizon the valuation problem becomes more complex some analysts support the use of financial market interest rates for discounting deferred health benefits while others argue against discounting altogether we address the discounting issue by estimating implicit discount rates for deferred health benefits exhibited by workers in their choice of job risk wage responses to variation in life years at risk provide direct estimates of the discount rate that workers apply to their future utility the estimated real discount rate equals approximately 2 consistent with financial market rates for the period

the choice theory approach to market research this paper surveys economic choice theory stressing developments that permit use of data from psychometric and conjoint experiments to produce market demand forecasts alternatives to the widely used multinomial logit model are summarized and a new method for estimating multinomial probits is described an integration of choice models with attitudinal scaling and perceptual mapping within a latent variable system is described estimation of such systems under either random effects or fixed effects descriptions of heterogeneity across individuals is discussed issues in the use of choice models to describe responses from conjoint experiments are presented new regression diagnostic tests for the consistency of multinomial logit representations are discussed

averting catastrophes the strange economics of scylla and charybdis faced with numerous potential catastrophes nuclear and bioterrorism mega viruses climate change and others which should society attempt to avert a policy to avert one catastrophe considered in isolation might be evaluated in cost benefit terms but because society faces multiple catastrophes simple cost benefit analysis fails even if the benefit of averting each one exceeds the cost we should not necessarily avert them all we explore the policy interdependence of catastrophic events and develop a rule for determining which catastrophes should be averted and which should not jel d61 q51 q54

cointegration and threshold adjustment this article proposes an extension to the engle granger testing strategy by permitting asymmetry in the adjustment toward equilibrium in two different ways we demonstrate that our test has good power and size properties over the engle granger test when there are asymmetric departures from equilibrium we consider an application namely whether there exists cointegration among interest rates for instruments with different maturities this issue has been widely tested with mixed results we argue that either cautious policy or possibly opportunistic behavior on the part of the federal reserve implies that an equilibrium relationship between short and long term interest rates exists but that adjustments from disequilibrium are asymmetric in nature empirical tests using u s yields confirm the asymmetric nature of error correction among interest rates of different maturities

misperceived job hazards and welfare abstract bayesian workers produce chemicals hazardously in one sector of a two sector economy having one safe sector adopting an expected ex post welfare perspective we show workers misperceptions of hazards entail a classic externality we characterise chemicals competitive monopoly and socially efficient outputs assuming workers receive identical wage accident compensation contracts under each the value of information which induces workers to place greater stress on firms safety records or sharpens their priors and extend the standard monopoly welfare loss index for sufficient conditions for monopoly to be preferred to competition in chemicals and for size ranking monopoly and efficient chemical outputs

sticky prices inventories and market power in wholesale gasoline markets a model with costly adjustment of production and costly inventories implies that wholesale gasoline prices will respond with a lag to crude oil cost shocks unlike explanations that rely upon menu costs imperfect information or long term buyer seller relationships this model predicts that futures prices for gasoline will adjust incompletely to crude oil price shocks that occur close to the expiration date of the futures contract we test and confirm this implication examining wholesale price responses in 188 gasoline markets we also find that firms with market power adjust prices more slowly than do competitive firms consistent with the model

prices rise faster than they fall output prices tend to respond faster to input increases than to decreases this tendency is found in more than two of every three markets examined it is found as frequently in producer goods markets as in consumer goods markets in both kinds of markets the asymmetric response to cost shocks is substantial and durable on average the immediate response to a positive cost shock is at least twice the response to a negative shock and that difference is sustained for at least five to eight months unlike past studies which documented similar asymmetries in selected markets gasoline agricultural products etc this one uses large samples of diverse products 77 consumer and 165 producer goods accordingly the results suggest a gap in an essential part of economic theory as a start on filling this gap the study finds no asymmetry in the resonse of an individual decision maker a supermarket chain to its costs but it finds above average asymmetry where a cost shock is filtered through a fragmented w

time preference and life cycle consumption with endogenous survival we provide a structural theory of time preference and derive a functional form of intertemporal preferences by postulating that individuals make their life cycle consumption choices as if to maximize expected lifetime this yields a nontime separable expected utility representation where the inverse of the coefficient of intertemporal substitution exceeds the coefficient of relative risk aversion the rate of time preference depends on the inverse of expected remaining lifetime and the effect of age on the productivity of consumption in affecting health the preference formulation is applied in a standard intertemporal consumption model to illustrate the implied life cycle consumption choices

oil and pump prices testing their asymmetric relationship in a robust way abstract the aim of this study is to provide a novel method to assess whether retail fuel prices respond asymmetrically to changes in the international crude oil prices to do so we consider the whole supply chain we use daily data and we depart from the current practice in the literature that focuses on prices rather we consider the mark ups of both the refineries and retailers hence we show that we first need to assess whether the refineries mark up responds asymmetrically to the international crude oil prices and subsequently whether the retailers mark up shows an asymmetric behaviour relatively to changes in the refined fuel prices focusing in greece as our case study our findings show that greek fuel retailers do not change their mark up behaviour based on changes of the refined fuel price by contrast the asymmetric behaviour is evident in the refineries mark up relatively to changes in the international crude oil prices which is then passed through to the retailers and consumers finally we provide evidence that weekly and monthly data mask any such asymmetric relationship thus we maintain that unless the appropriate data frequency fuel price transformations and the whole supply chain are considered misleading findings could be revealed

the calibration of incomplete demand systems in quantitative analysis an easily implemented and flexible calibration technique for partial demand systems is introduced combining recent developments in incomplete demand systems and a set of restrictions conditioned on the available elasticity estimates the technique accommodates various degrees of knowledge on cross price elasticities satisfies curvature restrictions and allows the recovery of an exact welfare measure for policy analysis the technique is illustrated with a partial demand system for food consumption in korea for different states of knowledge on cross price effects the consumer welfare impact of food and agricultural trade liberalization is measured

valuing future risks to life environmental policies that alter future mortality rates may affect both current and future generations this paper examines willingness to pay for future risk reductions from the perspective of the current generation the life cycle consumption saving model implies that an individual discounts future risks to himself at the consumption rate of interest if capital markets are perfect the consumption rate equals the market rate of interest otherwise the consumption rate exceeds the market rate and numerical results suggest that the implied discount factor may be substantial the overlapping generations model implies that a member of the current generation discounts the value of risks to future generations at the rate at which current consumption is substituted for a bequest

symmetric or asymmetric price adjustments in the oil market an empirical analysis of the relations between international and domestic prices in the federal republic of germany 1972 89 abstract this paper investigates how german consumer and wholesale prices for gasoline and light heating oil react to changes in the corresponding rotterdam prices monthly data from 1972 to 1989 are employed and the subperiods of the 1970s 1972 to 1979 and 1980s 1980 1989 are distinguished error correction models are estimated to seperate long run equilibrium relations and short run adjustment processes for the 1980s we find rapid symmetric and full adjustment of the german prices to the rotterdam prices whereas during the 1970s we find some asymmetries and at least for gasoline the adjustment processes took considerably more time

investigation of production sales and inventory relationships using multicointegration and non symmetric error correction models the accumulated sum of a stationary series is called integrated if a linear combination of some of the integrated series is stationary it is said to be cointegrated this paper presents empirical results on inventories to consider the possibility of a deeper form of cointegration called multicointegration which is introduced in granger and lee 1989 a vector integrated series is multicointegrated if the accumulated sum of its stationary cointegrated linear combination is again cointegrated with itself inventory which is the accumulated sum of production minus sales is probably cointegrated with production and sales the empirical results generally support the presence of multicointegration of production and sales in many u s industries and industrial aggregates the results also favour the non symmetric error correction model providing evidence that the strength of attraction is different on both sides of the attractor a modified s s rule for inventory control is investigated in the context of a non symmetric error correction model and the results generally do not support the s s rule sufficient evidence is found to conclude that multicointegration is a useful concept in the area of inventory determination

the economics of risks to life this study asks two questions 1 what is the net value to the representative individual over his life time of activities that alter age specific mortality risks 2 what is the cost to the representative individual of activities that take a life at random at a given age results derived from an economic demographic model with full age specific accounting have a strong actuarial flavor alterations in the mortality schedule caused say by a medical breakthrough should be assessed on the utility of expected additional life years production and reproduction less expected social costs of support loss of life at a specific age due to an accident say should be assessed on the opportunity costs of expected lost years of living lost production and reproduction less expected social support costs the results show that current methods in general leave out an important social transfer term that value of a life lost is highly age dependent and that the degree of diminishing returns to consumption is crucial in calculations of the economic cost of risks

price induced patterns of competition this research focuses on how price changes influence the observed pattern of brand competition the paper begins with a basic utility model formulation and examines the implications of three major classes of preference distributions on the expected patterns of competition a price tier model is proposed to operationalize the theory and to allow predictive testing the price tier model is estimated on 28 brands across four product categories the results show a specific asymmetric pattern of price competition higher price higher quality brands steal share from other brands in the same price quality tier as well as from brands in the tier below however lower price lower quality brands take sales from their own tier and the tier below brands but do not steal significant share from the tiers above the results are consistent with a bimodal preference distribution with the regular price indifference point being located toward the lower quality end of the preference distribution for the categories analyzed

the demand for beer wine and spirits a systemwide analysis the systemwide approach to the analysis of consumer demand considers the multivariate structure of the problem in which the consumer allocates his income to all goods simultaneously this approach combines the theory of the consumer with empirical analysis and has enjoyed much popularity over the past decade for surveys of these developments see brown and deaton 1972 phlips 1974 powell 1974 theil 1975 76 1980 barten 1977 and theil and clements 1980 most previous applications of the systemwide approach have used national accounts commodity groups food clothing housing and so on for many business and government policy purposes however these groups are much too broad for example to analyze the effects on consumption of all but the simplest changes in indirect taxes we would need considerably more disaggregation similarly market researchers need to analyze demand at the individual product level for purposes of forecasting and formulating pricing and other policies the objective of this paper is to use the consumption of beer wine and spirits to illustrate how the approach can be apthis paper illustrates how the systemwide approach to consumer demand can be extended so that it can be applied to narrowly defined commodity groups we use the consumption of beer wine and spirits to show how the approach can be applied to estimate income and price elasticities of demand when the consumer s utility function is appropriately separable in alcoholic beverages and all other goods it is possible to confine our attention to the three beverages and ignore all other goods we use the demand model for a number of simulations designed to analyze the rapid growth of wine consumption we are indebted to john davis peter goldschmidt and kal stening for excellent research assistance to michael wohlgenant and henri theil for helpful comments and discussion and to the new south wales drug and alcohol authority for their partial financial support of this research

advertising and us alcoholic beverage demand system wide estimates the effects of advertising on consumption of alcoholic beverages in the us are analysed the goal is to obtain evidence on the importance of advertising at the level of beverage demand beer wine spirits and for total consumption of alcohol per capita gallons of ethanol a three equation conditional demand system is estimated that includes own and cros beverage advertising as explanatory variables four models of the differential demand system are estimated including the rotterdam aid cbs and nbr models using annual us data for the period 1964 90 on beverage consumption prices expednitures and real advertising estimates are obtained of the complete matrix of own and cross elascities for each beverage price and advertising at the beverage level the results indicate a positive butr very small effect of advertising on beverage consumption with most of the impact due to wine advertising and non due to beer advertising there is no efect of advertising in the composite demand function for al

tests of restrictions in large demand systems abstract this paper compares some asymptotic tests of linear restrictions using exact results and monte carlo methods in systems which contain the same regressors in each equation it is found that under a variety of conditions a statistic suggested by deaton provides a better approximation to the true distribution in small sample situations than the wald likelihood ratio or lagrange multiplier tests

do gasoline prices exhibit asymmetry not usually previous studies have found evidence of asymmetric price adjustment in u s retail gasoline prices in that gasoline prices rise more rapidly in response to a cost increase than fall in response to a cost decrease by estimating a threshold cointegration model that allows for multiple regimes i am able to test how sensitive this result is to outlying observations in contrast to previous studies i find little evidence of asymmetry for the vast majority of observations and that the asymmetry is being driven by a small number of outlying observations

asymmetric spillover effects between the shanghai and hong kong stock markets evidence from quantile lagged regression abstractthis article surveys the asymmetric spillover effects between the mainland china based shanghai composite index sci and the hong kong based hang seng index hsi using a quantile lagged regression model compared to previous studies this article based on data before and after the 2008 global financial crisis presents a more detailed analysis as we investigate the spillovers in terms of returns volatilities and exchange rates between the renminbi rmb and the hong kong dollar hkd throughout the entire conditional return distribution including the central quantiles which are closely related to the normal circumstances and the extreme quantiles which correspond to the bear and bull markets first we find that the return spillovers from its lagged returns or from the other index not only vary across time but also depend on stock state second while return volatility may boost the stock market in a bull market it accelerates the decline in a bear market third the depreciation of the

determinants of price elasticities for private labels and national brands of cheese an almost ideal demand system model is developed and used to estimate price elasticities for us cheese sold at retail growing consumption of cheese coupled with fierce competition between private labels and national brands serves as motivating factors for this study per capita consumption of cheese grew by 75 during 1980 2004 and private labels captured a rising share of this growth private labels today account for 35 of market share national brands for the remaining 65 kraft accounts for 45 of national brands but price increases for kraft brands led to a sizeable price gap between its brands and private labels this gap helped to stimulate growth of private labels marketing managers seek to capitalize on both growing cheese sales and price gaps for brands relevant information for marketing managers is consumer sensitivity to price changes this study uses 69 weeks of scanner data with consumers segmented by income levels to derive price elasticities for both lower and higher income consumer

an applied analysis of brand demand structure the demand literature is concerned with the optimal allocation of expenditure at varied but usually high levels of commodity aggregation much less aggregation however is required for business applications in applied business settings interest centres upon the different brands of the same commodity because policy formulation takes place at the level of the individual brand this paper considers application of formal demand analysis to brand demand data a theoretically plausible demand system is invoked to describe inter brand allocation of expenditure test restrictions imposed by economic theory and yield empirically determined insights into brand demand structure

the role of intergenerational transfers in aggregate capital accumulation this paper uses historical u s data to directly estimate the contribution of intergenerational transfers to aggregate capital accumulation the evidence presented indicates that intergenerational transfers account for the vast majority of aggregate u s capital formation only a negligible fraction of actual capital accumulation can be traced to life cycle or hump savings a major difference between this study and previous investigations of this issue is the use of more accurate longitudinal age earnings and age consumption profiles these profiles are simply too flat to generate substantial life cycle savings this paper suggests the importance of and need for substantially greater research and data collection on intergenerational transfers life cycle models of savings that emphasize savings for retirement as the dominant form of capital accumulation should give way to models that illuminate the determinants of intergenerational transfers

is there an asymmetry in the response of diesel and petrol prices to crude oil price changes evidence from new zealand this paper examines how pre tax petrol and diesel prices in new zealand respond to changes in crude oil prices using an asymmetric error correction model our results show that oil companies adjust diesel prices upwards faster than they adjust them downwards and the difference is statistically significant however we find no statistical evidence for an asymmetry in the adjustment of petrol prices even though the magnitude of estimated coefficients suggests a faster response to rising prices as diesel pricing is not as competitive as petrol pricing calls for further government actions and monitoring of the oil market may be justified our findings also have important implications for the conduct of monetary policy as the pass through of crude oil price changes can affect cost push inflation

business as usual a consumer search theory of sticky prices and asymmetric price adjustment abstract empirical evidence suggests that prices are sticky with respect to cost changes moreover prices respond more rapidly to cost increases than to cost decreases we develop a search theoretic model which is consistent with this evidence and allows for additional testable predictions our results are based on the assumption that buyers do not observe the sellers costs but know that cost changes are positively correlated across sellers in equilibrium a change in price is likely to induce consumer search which explains sticky prices moreover the signal conveyed by a price decrease is different from the signal conveyed by a price increase which explains asymmetry in price adjustment

exploring the life of fuel price responses in retail markets the effect of cross sectional aggregation abstract empirical studies on vertical price transmission in retail fuel markets commonly use average group data of petrol stations in this paper a simulation approach is employed to illustrate that in this case the persistence of price responses tends to be overestimated to explore the real extent of the problem we apply the mean group mg and the mean group with common correlated effects mg cce estimators to individual data from petrol stations when heterogeneity in the pricing dynamics is captured by mg and mg cce estimators persistence of retail price responses becomes considerably lower than the typical ols estimations from average group data would suggest

compensating wage differentials and the value of life abstract this paper examines the relationship between willingness to pay and compensating wage differential measures of the value of a statistical life it resolves some recently noted discrepancies between such measures

asymmetry in retail gasoline and crude oil price movements in the united states an application of hidden cointegration technique abstract there is a common belief that gasoline prices respond more quickly to crude oil price increases than decreases some economists and politicians believe that asymmetry in oil and gasoline price movements is the outcome of a non competitive gasoline market requiring that governments take policy action to address unfair pricing there is no consensus as to the existence or nature of the asymmetric relationship between prices of gasoline and crude oil much of this literature specifies asymmetry in the speed of adjustment and short run adjustment coefficients in contrast granger and yoon s granger c w and yoon g hidden cointegration university of california san diego department of economics working paper 2002 crouching error correction model cecm identifies asymmetry of the cointegrating vectors between components cumulative positive and negative changes of the series applying the cecm to retail gasoline and crude oil prices for the u s we find that there is only evidence of cointegration between positive components of crude oil prices and negative components of gasoline prices in contrast to the literature which attributes asymmetric price movements to market power of refiners these findings suggest that gasoline prices in the long run are more influenced by the technological changes on the demand side than crude oil price movements on the supply side

an econometric study on estimation of trade shares using the almost ideal demand system in the world link the objectives of this paper are to analyse the import shares by country using the world trade matrix data for 25 countries regions of the world various methods for the analysis of import or export shares are used in the literature but none of the studies has made use of the approach of an almost ideal demand system aids deaton and muellbauer 1980 the results based on aids for import shares are plausible and when maximizing behaviour is not assumed estimation of import share equations by ordinary least squares is possible in the aids approach import shares turn out to be a function of real value of imports and export prices of major competitors homogeneity and symmetry restrictions can be tested and estimation with constraints can conducted using fiml full information maximum likelihood or equivalent methods the paper presents results for three important countries regions namely the usa japan and the eec as importing country regions and for major suppliers to each country region the impo

econometric models of asymmetric price transmission abstract in this paper we review the existing empirical literature on price asymmetries in commodities providing a way to classify and compare different studies that are highly heterogeneous in terms of econometric models type of asymmetries and empirical findings relative to the previous literature this paper is novel in several respects first it presents a detailed and updated survey of the existing empirical contributions on price asymmetries in the transmission mechanism linking input prices to output prices second this paper presents an extension of the traditional distinction between long run and short run asymmetries to new categories of asymmetries such as contemporaneous impact distributed lag effect cumulated impact reaction time equilibrium and momentum equilibrium adjustment path regime effect regime equilibrium adjustment path each empirical study is then critically discussed in the light of this new classification of asymmetries third this paper evaluates the relative merits of the most popular econometric models for price asymmetries namely autoregressive distributed lags partial adjustments error correction models regime switching and vector autoregressive models finally we use the meta regression analysis to investigate whether the results of asymmetry tests are not model invariant and find which additional factors systematically influence the rejection of the null hypothesis of symmetric price adjustment the main results of our survey can be summarized as follows i each econometric model is specialized to capture a subset of asymmetries ii each asymmetry is better investigated by a subset of econometric models iii the general significance of the f test for asymmetric price transmission depends mainly on characteristics of the data dynamic specification of the econometric model and market characteristics overall our empirical findings confirm that asymmetry in all its forms is very likely to occur in a wide range of markets and econometric models

testing for price response asymmetries in the spanish fuel market new evidence from daily data abstract in this work we use daily data to examine pattern asymmetries in the speed of transmission of international wholesale oil prices to spanish retail fuel prices results are robust to two alternative specifications of an asymmetric error correction model for which the presence of autoregressive conditional heteroskedasticity for disturbances is modeled by a garch 1 1 process evidence indicates that the short term transmission of wholesale prices to retail prices is quite symmetric for both gasoline and diesel fuel nevertheless in contrast to some of the results provided for an earlier period we did not find asymmetries in the speed of retail price responses toward long run equilibrium our evidence also suggests that the use of weekly or lower frequency data is one of the possible explanations for some of the seemingly contradictory results concerning this issue

new evidence on asymmetric gasoline price responses in a 1997 paper borenstein cameron and gilbert bcg claim that gasoline prices rise quickly following an increase in the price of crude oil but fall slowly following a decrease this note estimates an error correction model with daily spot gasoline and crude oil price data over the period 1985 1998 and finds no evidence of asymmetry in wholesale gasoline prices the sources of the difference in results are twofold first we use the standard engle granger two step estimation procedure whereas bcg used a nonstandard estimation methodology second even using bcg s nonstandard specification the use of daily rather than weekly data yields little evidence of price asymmetry

on what basis should health be discounted the discount rate to be applied in health care programmes should be based on the time preference rate for health and this same rate should be applied to costs as well due to the limited tradeability of health when eliciting its time preference rate the intertemporal choices must be framed in such a way as to resemble as closely as possible those facing health planners and decision makers

quality of life and the wtp for an increased life expectancy at an advanced age abstract in this study we report an attempt to measure the value adult swedes impute to an increased survival probability at high ages a rating scale between the worst possible quality of life 1 and the best possible quality of life 10 is used to indicate the quality of life a person expects to achieve at an advanced age we find a highly significant correlation between this quality measure and the insurance premium a person is willing to pay in exchange for a programme increasing the expected length of life by one year conditional on having survived until the age of 75 years the maximum insurance premium the average person is willing to pay for such a programme is less than 1500 the willingness to pay increase with a person s age but at a low rate the implied average marginal rate of time preference is about 1 percent

differences in education and earnings across racial and ethnic groups tastes discrimination and investments in child quality viewing the united states as comprising many racial and ethnic groups it is shown that group differences in earnings schooling and rates of return from schooling are striking and that the groups with higher levels of schooling also have higher rates of return these data are shown to be consistent with a child quality investment model but they are not consistent with the hypotheses that the primary determinants of schooling level are discrimination minority group status differences in time preference discount rates or tastes for schooling group differences in fertility and female labor supply are examined as partial determinants of investment in child quality policy implications are discussed this paper was originally presented at the 1987 annual meeting of the population association of america see population index vol 53 no 3 fall 1987 p 443 excerpt

survival versus consumption we develop an indirect method to estimate utility and willingness to pay wtp for reductions in the risk of death at various ages using a life cycle model of consumption we assume that an individual sets his consumption level each year so as to maximize his expected lifetime utility alternative assumptions about opportunities for borrowing and annuities characterize two polar types of societies in our robinson crusoe case an individual must be entirely self sufficient and annuities are not available in our perfect markets case an individual can borrow against future earnings and purchase actuarially fair annuities we show that under these assumptions wtp is the sum of livelihood discounted expected future earnings and consumer surplus to illustrate our methods we derive wtp for an average financially independent american man under plausible assumptions the model is calibrated to 1978 earnings e g 18 000 per year for men aged 45 54 with at least some income in the robinson crusoe case wtp increases from 500 000 at age 20 to a peak of 1 250 000 at age 40 and declines to 630 000 at age 60 in the perfect markets case age variations are less pronounced wtp is 1 050 000 at age 20 peaks at 1 070 000 at age 25 and declines to 600 000 at age 60 these results suggest that individuals value risks to their lives at several times the pro rata share of their future earnings

do petrol prices rise faster than they fall when the market shows significant disequilibria abstract this paper examines if the long run relationship between retail and wholesale petrol prices is subject to adjustment asymmetric behaviour using weekly australian data 2007 2012 across 111 locations a short run dynamic model is specified in which three feedback coefficients capture three different types of disequilibria large and positive large and negative small positive negative significant evidence of asymmetric behaviour is found in 28 locations which are mainly in tasmania queensland and new south wales in these locations when prices are conspicuously above the equilibrium path retailers sluggishly lower their prices but when prices are substantially below the equilibrium values the adjustment speed is significantly faster

choice under uncertainty problems solved and unsolved ffifteen years ago the theory of choice under uncertainty could be considered one of the success stories of economic analysis it rested on solid axiomatic foundations it had seen important breakthroughs in the analytics of risk risk aversion and their applications to economic issues and it stood ready to provide the theoretical underpinnings for the newly emerging information revolution in economics 1 today choice under uncertainty is a field in flux the standard theory is being challenged on several grounds from both within and outside economics the nature of these challenges and of our profession s responses to them is the topic of this paper

the evaluation of disease prevention and treatment using simulation models health policy models provide measures of the effectiveness and costs of complex health care interventions making it possible to compare different policies we look at the validity of models of screening prevention and treatment focusing on two simulation studies in designing models account must be taken of disease trends and changing treatment patterns the choice of modelling technique and of system boundaries are shown to have an impact on results decisions have to be made about data which may be scarce or inappropriate for modelling purposes cost effectiveness measures are based on the ratio of costs to benefits such as life years saved or quality adjusted life years these are sensitive to the time period and the discount rates chosen policy makers should be aware of these different sources of variability or error for decision making purposes the calculation of output measures must be based on the same assumptions

optimal antibiotic usage with resistance and endogenous technological change the use of antibiotics poses an impure public goods problem their utilization jointly generates a positive private characteristic that is the health of the individual who consumes the drug and a negative public characteristic that is the reduction in susceptibility that renders the drug less effective over time the authors use an expected utility model to explicitly identify these characteristics in a dynamic setting from a social planner perspective the trade off between present and future use of a drug and the allocation of resources to the development of new drugs is discussed results suggest that the optimal policy would limit the number of people treated with an existing antibiotic through time also the model indicates that short bursts of high level investment in research and development are optimal when the research process is certain while a steady increase in investment over time is warranted when the discovery process is uncertain

asymmetric fuel price responses under heterogeneity we explore the effect of cross sectional aggregation of data on estimation and test of asymmetric retail fuel price responses to wholesale price shocks the analysis is performed on data collected daily from individual fuel stations in the spanish metropolitan areas of madrid and barcelona while the standard ols estimator is applied to an error correction model in the case of the aggregated time series we use the mean group approaches developed by pesaran and smith 1995 and pesaran 2006 to estimate the short and long run micro relations under heterogeneity we found remarkable differences between the results of estimations using aggregated and disaggregated data which are highly robust to both datasets considered our findings could help to explain many of the results in the literature on this research topic on the one hand they suggest that the typical estimation with aggregated data clearly tends to overestimate the persistence of shocks on the other hand we show that aggregation may generate a loss of efficiency in econometric estimates that is sufficiently large to hide the existence of the rockets and feathers phenomenon

the value of disease prevention vs treatment we present an integrated valuation model for diseases that are life threatening the model extends the standard one period value per statistical life model to three health prospects healthy ill and dead we derive willingness to pay values for prevention efforts that reduce a disease s incidence rate as well as for treatments that lower the corresponding health deterioration and mortality rates we find that the demand value of prevention always exceeds that of treatment people often overweight small risks and underweight large ones we use the rank dependent utility framework to explore how the demand for prevention and treatment alters when people evaluate probabilities in a non linear manner for incidence and mortality rates associated with common types of cancers the inverse s shaped probability weighting found in experimental studies leads to a significant increase in the demand values of both treatment and prevention

rockets and feathers revisited an international comparison on european gasoline markets this paper re examines the issue of asymmetries in the transmission of shocks to crude oil prices onto the retail price of gasoline relative to the previous literature the distinguishing features of the present paper are i use of updated and comparable data to carry out an international comparison of gasoline markets ii two stage modeling of the transmission of oil price shocks to gasoline prices first refinery stage and second distribution stage in order to assess possible asymmetries at either one or both stages iii use of asymmetric error correction models to distinguish between asymmetries that arise from short run deviations in input prices and from the speed at which the gasoline price reverts to its long run level iv explicit possibly asymmetric role of the exchange rate as crude oil is paid for in dollars whereas gasoline sells for different sums of national currencies v bootstrapping of f tests of asymmetries in order to overcome the lowpower problem of conventional testing procedures in contrast to several previous findings the results generally point to widespread differences in both adjustment speeds and short run responses when input prices rise or fall

the welfare value of fda s mercury in fish advisory a dynamic reanalysis assessing the welfare impact of consumer health advisories is a thorny task recently shimshack and ward 2010 studied how u s households responded to fda s 2001 mercury in fish advisory they found that the average at risk household reduced fish consumption by 21 resulting in a 17 reduction in mercury exposure at the cost of a 21 reduction in cardioprotective omega 3 fatty acids based on a static assessment of the health costs and benefits shimshack and ward concluded that the advisory policy resulted in an overall consumer welfare loss in this note we propose a dynamic assessment that links the long term cardiovascular health effects of the advisory to life cycle consumption we find that under reasonable assumptions the welfare loss might be much larger than suggested our analysis highlights the importance of accounting for dynamic effects when evaluating persistent changes in exposure to environmental health risks

an econometric study of tourism demand the aids model of us and european tourism in mediterranean countries the almost ideal demand system aids model was used to estimate tourism expenditure allocation by us and west european countries among a range of mediterranean destinations the approach has the advantage of an explicit basis in consumer expenditure theory and by modelling the changes in the budget shares of expenditure among destinations provides new information relative to that provided by the traditional single equation approach the estimated model was econometrically satisfactory although symmetry and homogeneity were rejected in line with the findings of past studies of consumer demand the expenditure elasticities demonstrated considerable differences in tourism demand preferences between origin countries and between traditional and newly developing destinations the own and cross price elasticities indicated the importance of effective prices in determining the allocation of expenditure among destinations

is the age 60 rule relevant in 1960 the federal aviation administration in the united states put in place the age 60 rule that required airline pilots to retire upon reaching the age of 60 years this rule has been challenged on numerous occasions but the faa has not changed the rule a logit model is used to analyse accidents and incidents for 1989 such factors as piolt training and experience aircraft characteristics and whether are considered in analysing the impact of pilot age to age 65 on accidents age is not found to be a statistically significant factor for pilots in three licence classes this study provides indirect evidence that the age 60 rule may be unwarranted

altruism deficit policies and the wealth of future generations i introduction there is now a substantial body of evidence suggesting that altruistic financial bequests are zero for the vast majority of households 1 other studies seem to indicate that the financial bequests which are made are not likely to be altruistically motivated 2 while this evidence against the importance of altruistic financial bequests seems reasonably convincing it is by no means clear that the importance of altruism per se has been dismissed 3 for example the results reported in altonji hayashi and kotlikoff 1992 tables 14 17 indicate that extended family resources while not perfectly linked to own resources are important for explaining own consumption the authors do not reject the notion that substantial altruistically motivated transfers occur in the u s rather they suggest the altruistically motivated transfers which are made take the form of less than fully efficient human capital transfers to children if most altruistic transfers do take place via educational expenditures how does this affect the ricardian equivalence theorem robert barro 1974 1989 argues the presence of any altruistic transfer is sufficient to guarantee that intergenerational transfers caused by government policy are neutral other forms of intergenerational transfers such as inter vivos gifts to children support of children s education and so on can work in a similar manner therefore the ricardian results will hold even if many persons leave little in the way of formal bequests 1989 41 4 an alternative view however is expressed by allan drazen 1978 he argues if parents possess an insufficient mix of wealth and altruism intergenerational transfers could be exhausted before the efficient level of human capital investment is achieved if explicit or implicit loans between parents and children are not possible then the government may be able to improve welfare by generating intergenerational transfers from children to parents 5 a cut in the parents tax burden and an equal present value increase in the tax on the next generation is equivalent to a government enforced loan at the going market interest rate since educational expenditures are inefficiently low the return on human capital investment exceeds the loan rate therefore parents could put an amount less than the tax cut into their children s education and still leave the children with enough additional income to pay for the future tax increase thus a deficit policy serves to expand the consumption possibility set of the family viewed in this way drazen 1978 514 footnote 7 imagines an argument for a pareto optimal level of public debt issue 6 a third possibility was identified by nerlove razin and sadka 1988 who conduct the most explicit analysis of government transfers in an economy with altruistic but financial bequest constrained households they also find a transfer or implicit loan to parents from their children will make the parents unambiguously better off however they were the first to point out that a deficit policy may lower the welfare of the children although they fail to explain why thus even in the presence of altruistic transfers from parents to children the effect of deficits on the consumption of future generations is far from clear in this paper we wish to clarify the effect of intergenerational transfers on bequest constrained families the next section intuitively explains why a government loan or deficit policy generates an ambiguous effect on the children s consumption even though altruistic parents are fully capable of making both generations better off after the loan we also identify the key structural determinants of the change in the children s wealth due to the loan in section iii we extend the simple model of section ii to a more quantitatively realistic multi period life cycle simulation model of a bequest constrained household the simulation model is then used in section iv to examine how a government intergenerational transfer affects the consumption of each generation under various settings of the key structural determinants identified in section ii

valuing environmental health effects an economic perspective this paper provides an overview of some of the issues involved in comparing benefit cost analysis and cost effectiveness analysis based on quality adjusted life years as alternative approaches to assessing environmental policies that affect human health it concludes that i although qalys have the advantage of reflecting policy impacts on both health status and longevity in a single scalar measure they are not consistent with utility theory unless individuals preferences satisfy some restrictive conditions ii they do not capture other important aspects of the valuation of changes in mortality and morbidity iii cost effectiveness analysis based on qalys as a measure of effectiveness omits non health related effects of environmental policy and iv it leaves unanswered the important question of what level of environmental regulation is appropriate

do gasoline prices respond asymmetrically to crude oil price changes the authors test and confirm that retail gasoline prices respond more quickly to increases than to decreases in crude oil prices among the possible sources of this asymmetry are production inventory adjustment lags and market power of some sellers by analyzing price transmission at different points in the distribution chain the authors attempt to shed light on these theories spot prices for generic gasoline show asymmetry in responding to crude oil price changes which may reflect inventory adjustment effects asymmetry also appears in the response of retail prices to wholesale price changes possibly indicating short run market power among retailers

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