the impact of mandatory disclosure laws on product choices an analysis of the salad dressing market abstract the nutrition labeling and education act nlea requires most food products to include a nutrition label prior to the nlea labeling was voluntary this study uses nutrition label information and supermarket scanner data pre and post nlea to examine the impact of moving from a voluntary to a mandatory labeling regime on consumer product choice the voluntary unraveling of information is shown to be an important market mechanism prior to the nlea all low fat salad dressings had a nutrition label while the majority of the higher fat dressings did not however there remained large variation in fat content among dressings that did not voluntarily label those with the highest fat levels experienced a significant decline in sales after they were required to disclose the results indicate that even in markets with credible low cost mechanisms to disclose mandatory labeling can have an impact on consumer behavior and health

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

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

consumer information labelling and international trade in agri food products abstract the focus of the world trade organization is establishing limits on governments ability to impose trade barriers in response to producers requests for protection in recent years however requests for protection from imports has increasingly come from consumers over issues ranging from animal welfare concerns employment of child labour the use of growth hormones differing environmental standards and gm foods the current international trade regime is ill suited to deal with consumer based protectionism this paper develops a model that explicitly incorporates consumer concerns into an international trade model and compares the result with the standard treatment further using the model incorporating consumer concerns a labelling policy for imports is compared to an import embargo the labelling policy is found to be superior to an embargo implications are drawn for future trade negotiations pertaining to sanitary and phytosanitary measures and technical barriers to trade

dying to win olympic gold medals and longevity abstract this paper compares mortality between gold and silver medalists in olympic track and field to study how achievement influences health contrary to conventional wisdom winners die over one year earlier than losers i find strong evidence of differences in earnings and occupational choices as a mechanism losers pursued higher paying occupations than winners according to individual census records i find no evidence consistent with selection or risk taking how people respond to success or failure in pivotal life events may produce long lasting consequences for health

the effect of income on mortality evidence from the social security notch abstract legislation in the 1970s created a notch in social security payments with those born after january 1 1917 receiving sharply lower benefits using restricted use versions of the national mortality detail file combined with census data we use this quasi experiment to examine the income mortality link in an elderly population estimates from difference in difference and regression discontinuity models show the higher income group has a statistically significantly higher mortality rate contradicting the previous literature we also found that younger cohorts responded to lower incomes by increasing postretirement work effort suggesting that moderate employment has beneficial health effects for the elderly

the social basis of interdependent preferences abstract most economists are sympathetic to the idea that concerns for relative position are an important aspect of many economic problems there has traditionally been a reluctance to include such concerns primarily because models that included them often allow such a broad range of behavior that there are few if any restrictions on equilibrium behavior and hence such models would have little or no predictive power in this paper we discuss how reduced form models may naturally give rise to utility functions that depend in part on relative standing there are several advantages of modelling concern for relative standing in reduced form utility functions even when there is no similar concern in the deep preferences it provides structure and constraints on the way that relative standing affects utility and further it can yield testable implications about the way that changes in the underlying environment affect the concern for relative standing we discuss the advantages and disadvantages of modelling social concerns in this way and provide examples that illustrate how concerns for relative standing can affect savings investment and labor choice decisions

prizes and productivity how winning the fields medal affects scientific output knowledge generation is key to economic growth and scientific prizes are designed to encourage it but how does winning a prestigious prize affect future output we compare the productivity of fields medal recipients winners of the top mathematics prize to that of similarly brilliant contenders the two groups have similar publication rates until the award year after which the winners productivity declines the medalists begin to play the field studying unfamiliar topics at the expense of writing papers it appears that tournaments can have large postprize effects on the effort allocation of knowledge producers

relativity rank and the utility of income relative utility has become an important concept in several disjoint areas of economics i present a cardinal model of income utility based on the supposition that agents care about their rank in the income distribution and that utility is subject to adaptation over time utility levels correspond to the leyden individual welfare function while utility differences yield a version of the prospect theory value function thereby providing a new and shared derivation of each i offer an explanation of some long standing paradoxes in the wellbeing literature and an insight into the links between relative comparisons and loss aversion

consumer welfare and gm food labeling a simulation using an adjusted kumaraswamy distribution genetically modified gm food products and their labeling have become a major policy issue with impassioned public debates we explore the impact of different labeling regimes on consumer attitudes towards gm products and consumer welfare our experimental results illustrate that these consumer attitudes do not follow the uniform distribution as has often been assumed in the literature but instead fit an adjusted kumaraswamy distribution if a uniform distribution is assumed the advantage of mandatory labeling would be exaggerated using an adjusted kumaraswamy distribution our simulation results demonstrate that voluntary labeling is superior to mandatory labeling with the higher separation cost while mandatory labeling is not necessarily better with lower separation cost therefore the governments of china and other countries with similar consumer characteristics should consider voluntary labeling for gm food while encouraging innovations that reduce the price of gm food as well as controlling the opportunistic behavior of its producers so as to enhance the advantage of voluntary labeling

demand for beef from cattle administered growth hormones or fed genetically modified corn a comparison of consumers in france germany the united kingdom and the united states we compare consumer valuations of beef ribeye steaks from cattle produced without growth hormones or genetically modified corn in france germany the united kingdom and the united states results suggest that french consumers place a higher value on beef from cattle that have not been administered added growth hormones than u s consumers however valuations of non hormone treated beef are statistically indistinguishable across germany the united kingdom and the united states results also suggest that european consumers place a much higher value on beef from cattle that have not been fed genetically modified corn than u s consumers copyright 2003 oxford university press

implications of mandatory labeling of gm food in india evidence from the supply side abstract we assess the supply side economic implications of introducing a strict mandatory labeling policy for genetically modified gm food in india as proposed in 2006 we apply our analysis to the case of cottonseed oil and soybean oil two products that would be the first affected by such regulation we find that gm food labeling would generate adjustment and implementation costs and consumer benefits would not always be visible and would highly depend on the degree of enforcement

the increasingly mixed proportional hazard model an application to socioeconomic status health shocks and mortality we introduce a duration model that allows for unobserved cumulative individual specific shocks which are likely to be important in explaining variations in duration outcomes such as length of life and time spent unemployed the model is also a useful tool in situations where researchers observe a great deal of information about individuals when first interviewed in surveys but little thereafter we call this model the increasingly mixed proportional hazard imph model we compare and contrast this model with the mixed proportional hazard mph model which continues to be the workhorse of applied single spell duration analysis in economics and the other social sciences we apply the imph model to study the relationships among socioeconomic status health shocks and mortality using 19 waves of data drawn from the german socio economic panel soep the imph model is found to fit the data statistically better than the mph model and unobserved health shocks and socioeconomic status are shown to play

the effect of newspaper entry and exit on electoral politics we use new data on entries and exits of us daily newspapers from 1869 to 2004 to estimate effects on political participation party vote shares and electoral competitiveness our identification strategy exploits the precise timing of these events and allows for the possibility of confounding trends we find that newspapers have a robust positive effect on political participation with one additional newspaper increasing both presidential and congressional turnout by approximately 0 3 percentage points newspaper competition is not a key driver of turnout our effect is driven mainly by the first newspaper in a market and the effect of a second or third paper is significantly smaller the effect on presidential turnout diminishes after the introduction of radio and television while the estimated effect on congressional turnout remains similar up to recent years we find no evidence that partisan newspapers affect party vote shares with confidence intervals that rule out even moderate sized effects we find no clear evidence that newspapers systematically help or hurt incumbents

tournaments without prizes evidence from personnel records we use a quasi experimental research design to study the effect of giving workers feedback on their relative performance the setting is a firm in which workers are paid piece rates and where for exogenous reasons management begins to reveal to workers their relative position in the distribution of pay and productivity we find that merely providing this information leads to a large and long lasting increase in productivity that is costless to the firm our findings are consistent with the interpretation that workers incipient concerns about their relative standing are activated by information about how they are performing relative to others this paper was accepted by olav sorenson organizations

simple tests of distributional effects on macroeconomic equations the presence of distributional effects in macroeconomic equations is shown to coincide with nonlinearity in micro behavioral relationships parameters estimated with aggregate data as in representative agent models contain distributional biases that are not measurable using aggregate data alone tests for distributional effects and other measures of the extent of aggregation problems are derived using distributional data observed over time significant distributional effects are noted for a model of annual aggregate u s commodity expenditure data a static model that accommodates individual heterogeneity is found to be statistically equivalent to a simply dynamic model that accommodates first order autocorrelation

habits peers and happiness an evolutionary perspective the principal motivating factor in our lives is the pursuit of happiness in most cultures when seeking this end individuals place a high priority on income and spend much of their waking time procuring this intermediate goal the connection between income and happiness is by no means trivial however two critical factors come into play first beyond subsistence level the positive effect of a permanent change in income tends to be short lived we rapidly become accustomed to a more expensive lifestyle a common name for this feature is habit formation second the satisfaction derived from a given level of income is sharply dependent on how it compares to the income of peers see for example andrew b abel 1990 becker 1996 and william a brock and steven n durlauf 2001 for a demonstration of the influence of habits and peer comparisons over behavior and see shane frederick and george loewenstein 1999 for a review of the underlying psychology habits and peer comparisons mean that an individual is not concerned mainly with her absolute level of income but rather with the difference between her income and a benchmark that changes over time in recent years economists have become increasingly interested in this fact this interest has been both applied i e the study of habits and peer influences over behavior and the analysis of happiness surveys and theoretical i e a search for biological foundations but unlike other more developed areas of economics these two approaches remain fairly separate from each other in particular the existing theoretical work is motivated only by the most basic empirical observations and the existing applied work for the most part has not been influenced by theoretical results in this essay we seek to reduce the distance between these two literature strands in particuhabits peers and happiness an evolutionary perspective

impact of genetic modification on country image of imported food products in european markets perceptions of channel members abstract risk to the image of food exporting countries in foreign markets for food products has been advanced as a reason for them to ban commercial release of genetically modified gm crops the aim of this paper is to explore the reality and intensity of such a risk in depth interviews have been conducted with key distributors in the european food sector to ascertain factors that they consider important in determining reputation of exporting countries and to ascertain whether gm impacts on such reputations highly negative consumer sentiment towards gm in europe seems likely to continue to influence food industry buyers against importing gm food however no evidence was found that presence of gm crops in a country causes negative perception of non gm food imported from that country provided adequate steps are taken to avoid accidental contamination of conventional crops producer countries do not appear at great risk of damaging their overall country image for food products if gm technology is introduced

testing for aggregation bias in linear models this paper discusses alternative methods of testing for aggregation bias and proposes direct tests of the discrepancy of the macroparameters from the average of the corresponding microparameters and derives tests of aggregation bias in the general case where the parameters of interest may possibly be nonlinear functions of the microparameters the paper also develops a durbin hausman type misspecification test of the disaggregate model these tests are then applied to disaggregate and aggregate specifications of employment functions for the u k economy disaggregated by forty industries copyright 1990 by royal economic society

a test of nutritional quality signaling in food markets prior to implementation of mandatory labeling in may 1994 new nutrition labeling regulations went into effect in the united states requiring mandatory disclosure of information on the nutritional content of foods this article uses grossman s model of totally effective quality signaling to evaluate whether markets were effective in information provision prior to the new regulation if markets were effective in providing information to consumers on the nutritional quality of foods the new regulation would be unnecessary the results of the logistic model where the probability of voluntary information disclosure is linked to the nutritional quality of food products and their prices indicate that private quality signaling was not reliably at work in food markets prior to implementation of the mandatory nutrition labeling regulation copyright 2000 oxford university press

aggregation with log linear models when economic theory suggests a log linear specification for individual agents e g cobbdouglas production it is common to estimate the same log linear model with aggregate data invoking a representative agent assumption and thereby assuming away aggregation errors this paper gives necessary and sufficient restrictions on the distribution of agents in an economy for log linear agent models to aggregate into log linear macro models and discusses the aggregation bias resulting from violation of these restrictions theorems tests economic rationales and empirical results are given included are connections to random walks and to cointegration analogous results for log level models are derived

mortality and immortality the nobel prize as an experiment into the effect of status upon longevity it has been known for centuries that the rich and famous have longer lives than the poor and ordinary causality however remains trenchantly debated the ideal experiment would be one in which extra status could somehow be dropped upon a sub sample of individuals while those in a control group of comparable individuals received none this paper attempts to formulate a test in that spirit it collects 19th century birth data on science nobel prize winners correcting for potential biases we estimate that winning the prize compared to merely being nominated is associated with between 1 and 2 years of extra longevity

a preliminary comparison of the retail level effects of genetically modified food labelling policies in canada and france abstract most developed countries have adopted labelling policies for genetically modified gm food in april 2004 canada implemented a voluntary labelling policy for gm and non gm food while france adopted the european union s new extended mandatory labelling of gm food i present the result of a qualitative survey of gm and non gm food labels in supermarkets in canada and france five months after the introduction of the new policies i find that there are almost no gm labelled products in france and non gm labelled products in canada each policy tends to crowd out the targeted label attribute however canadian consumers can choose between gm and non gm organic products whereas there are only non gm products in french supermarkets recent political developments in quebec suggest that the labelling landscape may change in canada either with an increase in the number of non gm products at the retail level or a transition towards a mandatory labelling policy like in france

choice between disaggregate and aggregate specifications estimated by instrumental variables methods a choice criterion is proposed for discriminating between disaggregate and aggregate models estimated by the instrumental variables method the criterion based on prediction errors represents a generalization of criteria developed in the context of classical regression models the article also derives general tests for aggregation bias in the instrumental variables context the criterion and the tests are applied in an analysis of u k employment demand it is shown that a model disaggregated by 40 industries predicts aggregate employment better than an aggregate model and that significant biases exist in estimates of the long run wage and output elasticities obtained from the aggregate model

healthy bodies and thick wallets the dual relation between health and economic status there is abundant evidence of a quantitatively large association between many measures of economic status including income and wealth and a variety of health outcomes such as mortality or morbidity however considerable and often heated debate remains especially across disciplines about the direction of causation and about why the association arises although medical scientists are often convinced that the dominant if not exclusive pathway is that variation in socioeconomic status produces health disparities they are increasingly debating among themselves about why low economic status might lead to poor health at least for modern industrial countries 1 the old standby arguments the less well to do have access to less or lower quality medical care or a stronger pattern of deleterious personal behaviors have been rejected as insufficient instead a series of intriguing competing theories have arisen that emphasize long term impacts of early childhood or even inter uterine environmental factors the cumulative effects of prolonged exposures to individual stressful events or reactions to macro societal factors such as rising levels of income inequality a common link is that each theory attempts to document the physiological processes through which low economic status leads to poorer health while these scientific questions are extremely important this research has taken place with little input from economists economists are now making contributions about the alternative pathway the impact poor health may have on economic resources poor health may restrict a family s capacity to earn income or to accumulate assets by limiting work or by raising medical expenses at a minimum this work should provide a caution against exaggerating the magnitude of causation from economic status to health outcomes but the potential contribution runs deeper as people age the evolving variation in individual health outcomes may offer additional statistical information to estimate parameters of household savings and consumption behavior that so far have proven to be somewhat elusive thus incorporating health uncertainty and risk into economic models should eventually enrich our understanding of basic tenets of household behavior the first section of this paper documents the size of the association between health and one prominent economic status measure household wealth section two deals with how health influences economic status by sketching out reasons why health may alter household savings and eventually wealth and then providing estimates of the empirical magnitude of these effects section three shifts attention to the alternative pathway the links between economic status and health and summarizes 2major controversies and evidence surrounding these issues

econometric analysis of aggregation in the context of linear prediction models this paper deals with the problem of aggregation where the focus of the analysis is whether to predict aggregate variables using macro or micro equations the grunfeldgriliches prediction criterion for choosing between aggregate and disaggregate equations is generalized to allow for contemporaneous covariances between the disturbances of micro equations and the possibility of different parametric restrictions on the equations of the disaggregate model a new test is proposed of the hypothesis of perfect aggregation which tests the validity of aggregation either through coefficient equality or through the stability over time of the composition of the regressors across the micro units the tools developed in the paper are then applied to employment demand functions for the uk economy disaggregated by 40 industries firstly a set of unrestricted log linear dynamic specifications are estimated for the disaggregate equations and then linear parameter restrictions are imposed as appropriate corresponding unrestricted and restricted aggregate equations are estimated two different levels of aggregation are considered aggregation over the 23 manufacturing industries and aggregation over all 40 industries of the economy in both cases the hypothesis of perfect aggregation is firmly rejected for the manufacturing industries the prediction criterion marginally favors the aggregate equation but over all industries the disaggregated equations are strongly preferred

rank as an inherent incentive evidence from a field experiment abstract money is the prime incentive considered in economic models however recent evidence indicates that people are also greatly concerned about their social rankings is this solely because rank brings tangible benefits or because in addition people have an inherent preference for high rank this paper deployed a field experiment that provides evidence for an inherent preference in the experiment vietnamese students enrolled in an english course performed significantly better on the official standardized international final test when they were told their rankings on practice tests than when they were not this result held even when this ranking information could not be reliably communicated thus severely attenuating the potential to bring tangible or status benefits

do voluntary biotechnology labels matter to the consumer evidence from the fluid milk market this article examines the effects on the demand of voluntary labeling for the use of genetically modified growth hormone for retail fluid milk using supermarket scanner data retail fluid milk tracks one of the first biotechnology products approved is fairly standardized and ubiquitous and allows for cross sectional differentiation between labeled and unlabeled products and between conventional and organic brands the results indicate that voluntary labeling increases the demand for recombinant bovine growth hormone free milk in addition the estimated effects of labeling appear to have increased over time innovations through biotechnology enable agricultural producers to reduce production costs and or enhance product quality for many livestock and crop commodities at the same time however these innovations may affect the demand for the products that utilize those commodities many individuals for example are concerned about potential risks to human health although by no means all consumers have such concerns burton metcalfe and smith heiman just and zilberman the use of the recombinant bovine growth hormone rbgh in milk production has been a particular concern for some consumers as approximately one third of the united states dairy herd about 3 million dairy cows currently receive rbgh supplements monsanto product labeling particularly with respect to the provision of health and environmental information is increasingly being used to provide information about product characteristics such as biotechnology content that

costly adjustment under rational expectations a generalization this note provides a generalization of the standard adjustment cost rational expectations model due to sargent 1978 which in addition to the cost of changing the level of the decision variable also allows for the cost of altering the speed with which decisions are changed it establishes the existence of a unique stable solution for this more general model derives an explicit solution for the underlying decision problem and provides a necessary order condition for identification of the structural parameters the note also contains an application of the model to the determination of employment in the u k coal industry over the 1956 83 period copyright 1991 by mit press

veblen effects in a theory of conspicuous consumption the authors examine conditions under which veblen effects arise from the desire to achieve social status by signaling wealth through conspicuous consumption while veblen effects cannot ordinarily arise when preferences satisfy a single crossing property they may emerge when this property fails in that case budget brands are priced at marginal cost while luxury brands though not intrinsically superior are sold at higher prices to consumers seeking to advertise wealth luxury brands earn strictly positive profits under conditions that would with standard formulations of preferences yield marginal cost pricing the authors explore factors that induce veblen effects and they investigate policy implications copyright 1996 by american economic association

what labelling policy for consumer choice the case of genetically modified food in canada and europe faced with divergent opinions among consumers on the use of genetically modified gm foods canada has adopted a voluntary labelling approach for non gm foods whereas the european union has a mandatory labelling policy for gm foods interestingly both labelling systems have resulted in very little if any additional consumer choice using an analytical model we show that the coexistence of gm and non gm products at the retail level depends on the labelling policy consumer perceptions and the type of product although voluntary labelling tends to favour the use of gm products it is more likely to provide consumer choice confrontes a des opinions publiques divergentes sur l usage des aliments genetiquement modifies gm le canada a adopte une politique d etiquetage volontaire pour les aliments non gm alors que l union europeenne a mis en place une politique d etiquetage obligatoire des aliments gm curieusement ces deux systemes d etiquetage n ont pas reellement permis de faciliter le choix des consommateurs a l aide d un modele analytique nous demontrons que la coexistence des produits gm et non gm au niveau du commerce de detail depend de la politique d etiquetage de la perception des consommateurs et du type de produit bien que l etiquetage volontaire ait tendance a favoriser l usage des produits gm cette approche est plus a meme de faciliter le choix du consommateur que l etiquetage obligatoire

last place aversion evidence and redistributive implications we present evidence from laboratory experiments showing that individuals are last place averse participants choose gambles with the potential to move them out of last place that they reject when randomly placed in other parts of the distribution in modified dictator games participants randomly placed in second to last place are the most likely to give money to the person one rank above them instead of the person one rank below last place aversion suggests that low income individuals might oppose redistribution because it could differentially help the group just beneath them using survey data we show that individuals making just above the minimum wage are the most likely to oppose its increase similarly in the general social survey those above poverty but below median income support redistribution significantly less than their background characteristics would predict jel codes h23 d31 c91