market frictions a unified model of search costs and switching costs it is well known that search costs and switching costs can create market power by constraining the ability of consumers to change suppliers while previous research has examined each cost in isolation this paper demonstrates the benefits of examining the two types of friction in unison the paper shows how subtle distinctions between the two costs can provide important differences in their effects upon consumer behaviour competition and welfare in addition the paper also illustrates a simple empirical methodology for estimating separate measures of both costs while demonstrating a potential bias that can arise if only one cost is considered

preference heterogeneity in experiments comparing the field and laboratory do laboratory experiments provide a reliable basis for measuring field preferences economists recognize that preferences can differ across individuals but only a few attempts have been made to elicit individual preferences for representative samples of a population in a particular geographical area region or country our primary objective is to directly compare estimates of preferences elicited from a convenience sample and the estimates for the wider population from which that sample is drawn we examine the strengths and weaknesses of laboratory and field experiments to detect differences in preferences over risk and time that are associated with standard observable characteristics of the individual

behavioral heterogeneity in dynamic search situations theory and experimental evidence abstract this paper presents models for search behavior and provides experimental evidence that behavioral heterogeneity in search is linked to heterogeneity in individual preferences observed search behavior is more consistent with a new model that assumes dynamic updating of utility reference points than with models that are based on expected utility maximization specifically reference point updating and loss aversion play a role for more than a third of the population the findings are of practical relevance as well as of interest for researchers who incorporate behavioral heterogeneity into models of dynamic choice behavior in for example consumer economics labor economics finance and decision theory

individual risk attitudes measurement determinants and behavioral consequences this paper studies risk attitudes using a large representative survey and a complementary experiment conducted with a representative subject pool in subjects homes using a question asking people about their willingness to take risks in general we find that gender age height and parental background have an economically significant impact on willingness to take risks the experiment confirms the behavioral validity of this measure using paid lottery choices turning to other questions about risk attitudes in specific contexts we find similar results on the determinants of risk attitudes and also shed light on the deeper question of stability of risk attitudes across contexts we conduct a horse race of the ability of different measures to explain risky behaviors such as holdings stocks occupational choice and smoking the question about risk taking in general generates the best all round predictor of risky behavior

agroindustrialization globalization and international development an overview of issues patterns and determinants this paper offers an overview for a special issue on agroindustrialization globalization and international development it sets out a conceptual framework for understanding the links among these three broad phenomena and then discusses emerging issues and evidence concerning the factors conditioning agroindustrialization in developing countries and the subsequent effects on employment poverty and the natural environment we conclude with a research agenda

retail competition in electricity markets abstract the introduction of competition into retail electricity supply gave rise to great expectations however to date its performance has proven less than stellar owing primarily to the theoretical concepts underpinning this reform which draw heavily on the austrian school neither consumers decision processes nor this sector s technical paradigm were adequately accounted for leading to an uncorrect estimation of the expected impact of opening to competition short and medium term prospects for the evolution of retail markets must be reconsidered from the perspective of greater stability not a generalization of competition but rather a persistent segmentation between active and inactive clients not a large and rapid diffusion of radical innovations in commercialisation with the potential for undermining the incumbents positions

hand in the cookie jar an experimental investigation of equity based compensation and managerial fraud the use of equity based compensation is an increasingly popular means by which to align the incentives of top management with those of the shareholders however recent theoretical and empirical research indicates that the use of equity based compensation has the unintended consequence of creating the incentive to commit managerial fraud of the type being reported in the press this paper reports experimental evidence that shows that the amount of fraud committed by subjects is positively correlated with the level of equity as is the level of effort in addition the amount of fraud that is committed is negatively correlated with the probability of detection and subjects risk aversion the experimental design permits the identification of causal relations in the directions just noted

contests as selection mechanisms the impact of risk aversion abstract we investigate how individual risk preferences affect the likelihood of selecting the more able contestant within a two player tullock contest our theoretical model yields two main predictions first an increase in the risk aversion of a player worsens her odds unless she already has a sufficiently large advantage second if the prize money is sufficiently large a less able but less risk averse contestant can achieve an equal or even higher probability of winning than a more able but more risk averse opponent in a laboratory experiment we confirm both the non monotonic impact and the compensating effect of risk aversion on winning probabilities our results suggest a novel explanation for the gender gap and the optimality of limited monetary incentives in selection contests

household internal and external electricity contract switching in eu countries abstractusing a representative sample of more than 13 000 households from eight countries in the european union eu this article empirically studies the factors related to household electricity c

information characteristics and errors in expectations experimental evidence we design an experiment to test the hypothesis that in violation of bayes rule some people respond more forcefully to the strength of information than to its weight we provide incentives to motivate effort use naturally occurring information and control for risk attitude we find that the strength weight bias affects expectations but that its magnitude is significantly lower than originally reported controls for non linear utility further reduce the bias our results suggest that incentive compatibility and controls for risk attitude considerably affect inferences on errors in expectations

sources procedures and microeconomic effects of innovation fabio arcangeli paul david frank engelman christopher freeman massimo moggi richard nelson luigi orsenigo nathan rosenberg michele salvati g n von tunzelman two anonymous referees and the participants at the meeting of the committee on distribution growth and technical progress of the italian national research council cnr rome november 16 1985 have helped with various redraftings a particularly grateful acknowledgment is for the insightful and patient help of moses abramovitz this work has been undertaken at the science policy research unit spru university of sussex as part of the research program of the designated research centre sponsored by the economic and social research council esrc earlier support to the research that led to this paper by the italian national research council cnr is also gratefully acknowledged the statistical research has been undertaken with the assistance of stephano brioschi ilaria fornari and giovannu prennushi

bounds on elasticities with optimization frictions a synthesis of micro and macro evidence on labor supply how can price elasticities be identified when agents face optimization frictions such as adjustment costs or inattention i derive bounds on structural price elasticities that are a function of the observed effect of a price change on demand the size of the price change and the degree of frictions the degree of frictions is measured by the utility losses agents tolerate to deviate from the frictionless optimum the bounds imply that frictions affect intensive margin elasticities much more than extensive margin elasticities i apply these bounds to the literature on labor supply the utility costs of ignoring the tax changes used to identify intensive margin labor supply elasticities are typically less than 1 of earnings as a result small frictions can explain the differences between micro and macro elasticities extensive and intensive margin elasticities and other disparate findings pooling estimates from existing studies i estimate a hicksian labor supply elasticity of 0 33 on the intensive margin and 0 25 on the extensive margin after accounting for frictions

risk aversion and incentive effects new data without order effects holt and laury 2002 used a menu of ordered lottery choices to make inferences about risk aversion under various payment conditions the main results of that paper were a subjects are risk averse even for relatively small payments of less than 5 b risk aversion increases sharply with large increases in the scale of cash payoffs and c there is no significant effect from increasing the scale of hypothetical payment with a few exceptions noted in the paper all treatments began with a low payment choice followed by a choice with hypothetical payments that had been scaled up by 20 50 or 90 followed by a real cash decision with the same high payment scale 20 50 or 90 followed by a single final low 1 real payment choice those in the 90 treatment could earn amounts ranging from 9 00 to 346 50 in this task as glenn w harrison et al 2004 correctly note this design confounds order and treatment effects since the high real payment choice was always completed after the low real and high hypothetical payment tasks in a new experiment reported below we first seek to replicate harrison et al s finding that the order effect participating in a low payment choice before making a high payment choice magnifies the scale effect in a second treatment each subject completes the menu of lottery choices under just one payment condition 1 or 20 real or hypothetical thereby eliminating any order effects i new data

contract farming and smallholder incentives to produce high quality experimental evidence from the vietnamese dairy sector in emerging markets for high value food products in developing countries processing companies search for efficient ways to source raw material of high quality one widely embraced approach is contract farming but relatively little is known about the appropriate design of financial incentives in a small farm context we use the example of the vietnamese dairy sector to analyze the effectiveness of existing contracts between a processor and smallholder farmers in terms of incentivizing the production of high quality milk a framed field experiment is conducted to evaluate the impact of two incentive instruments a price penalty for low quality and a bonus for consistent high quality milk on farmers investment in quality improving inputs statistical analysis suggests that the penalty drives farmers into higher input use resulting in better output quality the bonus payment generates even higher quality milk we also find that input choice levels depend on farmers socio economic characteristics such as wealth while individual risk preferences seem to be less important implications for the design of contracts with smallholders are discussed

decision support for retirement portfolio management overcoming myopic loss aversion via technology design as firms continue to abandon pensions in favor of employee managed retirement plans tremendous demands are being placed on the decision making proficiency of future retirees as reflected in the equity premium puzzle individual investors tend to hold overly conservative portfolios that provide meager payoffs over time consequently there is growing concern that the vast majority of retirement accounts might be insufficiently funded when employees reach retirement given that most retirement plans can now be managed online a potential solution lies in designing a web based decision support system dss that helps future retirees make more profitable portfolio management decisions this paper reports the results of a study in which 159 retirement plan participants were asked to use an experimental website to manage a portfolio of retirement investments over a simulated 30 year period using a psychological approach toward designing the dss myopic loss aversion is put forth as a theoretical explanation for the psychological mechanisms that encourage investors to hold overly conservative portfolios armed with this knowledge three design features information horizon system restrictiveness and decisional guidance are implemented as part of an overarching design strategy targeted at increasing investors willingness to take calculated risks the results indicate that investor conservatism diminishes when the dss presents prospective probabilities and payoffs over long time horizons in contrast short term information horizons constitute a major stumbling block for investors however when confronted with short term information horizons risk aversion can be successfully counteracted by configuring a dss to either restrict the frequency of decisions or to suggest a relatively aggressive portfolio allocation these findings carry important implications for theory and practice

consumer myopia imperfect competition and the energy efficiency gap evidence from the uk refrigerator market abstract the empirical literature on the energy efficiency gap concentrates on demand inefficiencies in the energy using durables markets and finds evidence that consumers underestimate future energy costs when purchasing a new appliance we take a broader view and also consider the impact of imperfect competition using data on the uk refrigerator market 2002 2007 we find that the average energy consumption of appliances sold during this period was only 7 2 higher than what would have been observed under a scenario with a perfectly competitive market and non myopic consumers one reason for this small gap is that market power actually reduces energy use

are you risk averse over other people s money decisions with uncertain outcomes are often made by one party in settings where another party bears the consequences whenever an individual is delegated to make decisions that affect others such as in the typical corporate structure does the individual make decisions that reflect the risk preferences of the party bearing the consequences we examine this question in two simple settings lottery choices and sealed bid auctions using controlled laboratory experiments we find that when an individual makes a decision for an anonymous stranger there is a tendency to exhibit less risk aversion this reduction in risk aversion is relative to his or her own preferences and it is also relative to his or her belief about the preferences of others this result has significant implications for the design of contracts between principals and agents

do individuals have preferences used in macro finance models an experimental investigation recent financial studies often assume that agents have epstein zin preferences preferences that require agents to care about when uncertainty is resolved under this recursive preference framework the preference for uncertainty resolution is entirely determined by an agent s preferences for risk and intertemporal substitution to test the implications of this model this paper presents an experiment designed to elicit subject preferences on risk time intertemporal substitution and uncertainty resolution results reveal that most subjects prefer early resolution of uncertainty and have relative risk aversion greater than the reciprocal of the elasticity of intertemporal substitution consistent with the predictions by recursive preferences subjects are classified in a finite mixture model by their risk time and intertemporal substitution parameters regression results show that types predicted by the epstein zin model to prefer early resolution choose early resolution with 20 50 higher probabili

identifying the elasticity of taxable income we use matched panels from the current population survey along with a grouping instrumental variables estimator to provide new estimates of the elasticity of taxable income our identification strategy exploits the fact that federal and state tax reforms over the past three decades have differentially affected cohorts across states and over time we find that the elasticity is in the range of 0 4 0 55 the implication of our new estimates for tax policy is that the revenue maximising tax rate is nearly 30 percentage points lower than that obtained when we use the typical identification strategy in the literature

toward obtaining a consistent estimate of the elasticity of taxable income using difference in differences abstract the elasticity of taxable income eti is a central parameter for tax policy debates this paper shows that mean reversion prevents most estimators employed in the literature from obtaining consistent estimates of the eti a new method is proposed that will resolve inconsistency due to mean reversion under testable assumptions regarding the degree of serial correlation in the error term using this procedure i estimate an eti of 0 858 which is about twice as large as the estimates found in the most frequently cited paper on this subject 13 the corresponding elasticity of broad income is 0 475

exploring the diffusion of low energy houses an empirical study in the european union abstract diffusion of low energy houses is an important part of energy and climate policy in the european union eu and in individual eu countries key barriers to the adoption of low energy houses include additional construction costs and uncertainty surrounding actual energy and cost savings in this paper we econometrically analyze determinants of low energy house adoption including time and risk preferences we rely on original data from a large survey conducted among households in eight eu countries to our knowledge this is the first empirical study of low energy building adoption to rely on a demographically representative sample our set of covariates includes parameters of time and risk preferences that were elicited via state of the art incentivized multiple price list experiments and via self assessment scales we find mixed results for the effects of time discounting on low energy house adoption risk preferences do appear to matter as risk proneness increases so does the adoption of zero net or energy plus building but not passive houses consistent with the low cost hypothesis about environmental attitude and action we find no results for environmental attitudes and social norms

risk attitudes randomization to treatment and self selection into experiments randomization to treatment is fundamental to statistical control in the design of experiments however randomization implies some uncertainty about treatment condition and individuals differ in their preferences towards taking on risk since human subjects often volunteer for experiments or are allowed to drop out of the experiment at any time if they want to it is possible that the sample observed in an experiment might be biased because of the risk of randomization on the other hand the widespread use of a guaranteed show up fee that is non stochastic may generate sample selection biases of the opposite direction encouraging more risk averse samples into experiments we directly test these hypotheses that risk attitudes play a role in sample selection our results suggest that randomization bias does affect the overall level of risk aversion in the sample we observe but that it does not affect the demographic mix of risk attitudes in the sample we show that the common use of non stochastic show up fees can generate samples that are more risk averse than would otherwise have been observed

a large scale test of the effects of time discounting risk aversion loss aversion and present bias on household adoption of energy efficient technologies abstract this paper empirically and jointly analyses the relations between standard time discounting risk aversion loss aversion and present bias and household stated adoption of low to high stake energy efficiency technologies eets light emitting diodes leds energy efficient appliances and retrofit measures the analysis relies on a large representative sample drawn from eight european union countries preferences over time risk and losses were elicited and jointly estimated from participant choices in incentivized context free multiple price list experiments the findings from econometrically estimating eet adoption equations provide some support for the hypothesis that individuals who are more loss averse or more risk averse or who exhibit a lower time discount factor are less likely to have adopted eets yet some of the results significance levels and effect sizes appeared sensitive to the addition of covariates which may be an indication of bad controls finally omitting one or several of the parameters capturing preferences over time risk and losses when estimating the eet adoption equations did not appear to cause omitted variable bias

do private standards benefit workers in horticultural export chains in peru private standards are spreading rapidly in international food production and trade and are moving beyond food quality and safety aspect to address environmental and social concerns we examine how effective private standards are in improving employment conditions in global food supply chains using panel data from own company and worker surveys and different econometric techniques we analyze how the adoption of a variety of private standards that differ with respect to their focus on labor influences employment conditions in production processing and exporting companies in the horticultural export chain in peru we find that workers employed in companies adopting private labor standards are more likely to be paid a minimum wage to have a contract and to receive training but there is no effect of private standards on the level of the wage and on the employment period we conclude that labor standards are most effective in reinforcing the respect of national labor laws and when there exists a clear cut definition on the employment requirements they push forward despite the existence of labor regulations at the national level and the wide spread use of private labor standards ethical labor concerns do remain an issue in the peruvian horticultural export sector

the value of private versus public risk and pure altruism an experimental economics test in 1996 johannesson et al published a paper entitled the value of private safety versus the value of public safety based on the preliminary evidence from a hypothetical contingent valuation study for public and private safety these authors argue that consumers behave as pure altruists who consider the cost of a program that might be imposed on other voters when they determine their maximum willingness to pay for public safety programs the authors conclude that further empirical research in this area is warranted this article presents a set of laboratory economics experiments to test johannesson et al s conjecture under controlled conditions in which participants face an actual risk of financial loss the laboratory results extend those of johannesson et al s providing strong evidence of pure altruism in coercive settings involving public risks

elasticity of taxable income evidence from changes in municipal income tax rates in finland the elasticity of taxable income eti is a key parameter in income tax analysis both in terms of efficiency and tax revenue this paper uses finnish data to analyze the eti i use changes in flat municipal income tax rates as an instrument for overall changes in marginal tax rates this instrument is not a function of individual income and thus the eti estimates are less susceptible to bias caused by differential trends across the income distribution in general instruments used in previous studies do not have this feature my preferred estimate for the average eti is 0 21 this article is protected by copyright all rights reserved

the impact of the tomato agroindustry on the rural poor in mexico this article addresses the issue of whether the tomato agroindustry tai has been an effective instrument in the reduction of rural poverty the tai is by far the most important agroindustry in mexico in terms of exports and employment creation most of the laborers employed by the tai in northwest mexico are temporary migrants coming from poverty stricken regions in southern mexico conditions of poverty induced migration are explained the characteristics and strategies of large modern tomato enterprises are analyzed the main conclusion is that migrant income earned in the tomato fields and packing plants is fundamental for the bare survival in villages in poverty stricken regions however this does not provide a solution to poverty alleviation because migrant income is not sufficient to contribute to capital formation in the migrating communities or the to create the conditions for endogenous local development

the influence of serotonin deficiency on choice deferral and the compromise effect abstractpsychological and physiological states such as mood hunger stress and sleep deprivation are known to affect decision making processes and therefore crucially influence consumer behavior a possible biological mechanism underlying the observed variability of consumer behavior is the context sensitive variation in the levels of neuromodulators in the brain in a series of four experimental studies the authors pharmaceutically reduce the levels of the neurotransmitter serotonin in the brain to diminish the availability of subjects cognitive resources in doing so they study how serotonin brain levels influence 1 subjects tendency to avoid buying and 2 consumers preference for product options positioned as a compromise in a given choice set rather than for more extreme alternatives i e the compromise effect using realistic product choice scenarios in a binding decision framework they find that a reduction of brain serotonin levels leads to choice deferral and decreases the compromise

the elasticity of taxable income with respect to marginal tax rates a critical review this paper critically surveys the large and growing literature estimating the elasticity of taxable income with respect to marginal tax rates using tax return data first we provide a theoretical framework showing under what assumptions this elasticity can be used as a sufficient statistic for efficiency and optimal tax analysis we discuss what other parameters should be estimated when the elasticity is not a sufficient statistic second we discuss conceptually the key issues that arise in the empirical estimation of the elasticity of taxable income using the example of the 1993 top individual income tax rate increase in the united states to illustrate those issues third we provide a critical discussion of selected empirical analyses of the elasticity of taxable income in light of the theoretical and empirical framework we laid out finally we discuss avenues for future research jel h24 h31 j22

wildfires in poland the impact of risk preferences and loss aversion on environmental choices abstract this paper examines how risk preferences and loss aversion affect individual choices regarding environmental risks specifically forest wildfires in poland we also examine how the same individuals make choices in the context of financial risks estimating risk loss aversion and weighting probability parameters allows us to directly test whether prospect theory or expected utility theory is the better underlying behavioural model in both domains we find that in a sample consisting of a general population of poles the majority of respondents demonstrate behaviour consistent with prospect theory in both environmental and financial domains this finding has significant implications for future non market valuation studies additionally in this study we find evidence for similar risk preferences across those two domains

assessing farmers risk preferences and their determinants in a marginal upland area of vietnam a comparison of multiple elicitation techniques we examine the consistency of risk preference measures based on eight hypothetical elicitation methods and a lottery game applied to smallholder farmers in a marginal upland environment in vietnam using these measures we identify influencing factors of risk aversion via regression analysis whereby unlike previous studies we include several proxies of social capital such as social networks and norms data were collected from household heads and spouses separately in a random sample of 300 households although correlations between most of the various risk preference measures are all statistically highly significant most are weak on average respondents have a high degree of risk aversion and specific characteristics gender age idiosyncratic shocks education social norms network reliance with extended family and connections to local authorities are significant determinants of risk preferences across most elicitation methods whereas others the household s dependency ratio wealth and covariate shocks are significant in a few methods only the explanatory power of the models is limited indicating that other factors are likely to be of greater importance in determining risk preferences the results can help target safety nets encourage investments and lead to the development of more applicable methods for assessing risk preferences of smallholders in developing countries

individual preferences and the exponential growth bias abstract the exponential growth bias egb refers to individuals underestimation of the effects of exponential growth and has been shown to affect important financial decisions such as retirement savings we develop and test a novel experimental design to evaluate the magnitude of the egb based on multiple price lists our design simultaneously elicits the egb as well as subjects utility curvatures and time preferences allowing for non linear utility we structurally estimate the magnitude of the egb as about half as large as when linear utility is assumed these results shed light on the relationship between individual preferences and the egb

the effect of marginal tax rates on taxable income a panel study of the 1986 tax reform act this paper uses a treasury department panel of more than 4 000 taxpayers to estimate the sensitivity of taxable income to changes in tax rates on the basis of a comparison of the tax returns of the same individual taxpayers before and after the 1986 tax reform the analysis emphasizes that the response of taxable income involves much more than a change in the traditional measures of labor supply the evidence shows an elasticity of taxable income with respect to the marginal net of tax rate that is at least one and could be substantially higher the implications for recent tax rate changes are discussed

diversification into horticulture and poverty reduction a research agenda summary horticultural produce and processed products from the developing world are becoming increasingly popular both in domestic and in international markets global production and exports are rising steadily however yield increases have been smaller than area growth and have been negligible or even negative in the least developed countries while experience shows that horticulture can offer good opportunities for poverty reduction because it increases income and generates employment care must be taken that small and poor farmers are not excluded from the opportunities in these market sectors in this article we argue that development agencies must put more emphasis on horticultural research and development especially in the following priority areas genetic improvement safe production systems commercial seed production postharvest facilities and the urban peri urban environment

modern theories of entrepreneurial behavior a comparison and appraisal this paper compares and appraises three principal contemporary theories of entrepreneurial decision making neoclassical austrian and behavioral we employ theory appraisal criteria made available in fritz machlup s 1967 celebrated article on alternative theories of the firm the paper considers theories that treat sequences of behavior by which individual entrepreneurs reach decisions on two levels the discovery of profit opportunities and their exploitation we also consider how each theory characterizes the entrepreneur s decision making process by contrast with the posited behavior of other economic agents austrian theory is suited to explaining novel adventurous behavior at the discovery stage the algorithm for opportunity exploitation in both the neoclassical and austrian approaches is a single repertoire optimization rule neoclassical theory is situated in frictionless atomistic walrasian markets and emphasizes mathematical tractability austrian and behavioral theories conceive entrepreneurial acts taking place in market processes understood as complex institutional phenomena there are strong theoretical complementarities between austrian and behavioral approaches both approaches value descriptive accuracy though the behavioralists place more weight on operational tractability austrians and behavioralists share an interest in heuristics they emphasize the role of prior micro level knowledge at the discovery stage therefore more collaborative research in future between austrians and behavioralists should prove fruitful

elicitation formats and the wta wtp gap a study of climate neutral foods we conduct a field valuation experiment where we vary the valuation method contingent valuation vs inferred valuation as well as the payment format dichotomous choice vs payment card willingness to accept and willingness to pay valuations are elicited in a within subjects design for foods with climate neutral labels we find a similar gap for valuations elicited with the contingent or the inferred valuation method however we also find that the gap can be muted by using a payment card elicitation format

heterogeneous preferences and the individual change to alternative electricity contracts abstract based on data from a large scale computer based survey among more than 3700 citizens in germany this paper empirically disentangles the determinants of the general change of electricity contracts and the specific change from any green or non green to current green electricity contracts within the last ten years our econometric analysis reveals a strong relevance of behavioral factors and individual values and norms for example patience which was measured by an incentivized experiment included in the survey has a significantly positive effect on both general switches to alternative electricity contracts and specific switches to green electricity contracts furthermore trust and less robust social preferences also measured by an incentivized experiment have additional significantly positive effects on the specific change to green electricity contracts our estimation results also imply an important role of political identification i e an ecological policy orientation is strongly significantly positively correlated with the change to green electricity contracts furthermore several household specific factors like relocation decisions as well as socio demographic and socio economic variables like household income are also relevant the empirical analysis thus provides new explanation patterns for the phenomenon that relatively few households regularly change their electricity contracts and specifically switch to green electricity contracts although they have high stated preferences for such changes our insights suggest several directions for policy and electricity suppliers to increase these switching rates for example the high importance of trust for the change to green electricity contracts suggests transparency initiatives of electricity suppliers to decrease concerns against renewable energies

learning for a bonus how financial incentives interact with preferences this paper investigates the effect of financial incentives on student performance and analyzes for the first time how the incentive effect in education is moderated by students time preferences to examine this effect we use real labor market incentive programs that we combine with data from experiments on time preferences we find not only that students who are offered financial incentives for better grades have on average better first and second year grade point averages but also more strikingly that highly impatient students respond more strongly to financial incentives than relatively patient students this finding suggests that financial incentives are most effective at the beginning of an educational program when real labor market benefits are in the distant future

a review of international green power markets recent experience trends and market drivers green power marketing the act of differentially selling electricity generated wholly or in part from renewable sources has emerged in more than a dozen countries around the world almost two million customers worldwide buy green power today this paper reviews green power marketing activity in australia canada japan the us and in a number of countries in europe to gain an understanding of consumer demand for electricity generated from renewable sources it also examines key factors that influence market penetration of green power products such as product designs pricing incentives marketing strategies policies and product certification 2002 elsevier science ltd all rights reserved

identifying and testing models of managerial compensation this article analyses the identification and empirical content of the pure moral hazard pmh and the hybrid moral hazard hmh principal agent models the pmh model has hidden actions while the hmh model has hidden information in addition to hidden actions in both models agents are risk averse and principals are risk neutral the article derives the equilibrium restrictions from the optimal contract and uses the restrictions to show that the models have empirical content for any given risk aversion parameter the models other parameters are non parametrically point identified the risk aversion parameter and hence the model are however only partially identified management s ability to manipulate accounting reports arises endogenously within hmh models but not in all versions of pmh models we use our framework to investigate whether shareholders contract with management recognizing that accounting reports are susceptible to manipulation and therefore endogenous to the incentives offered to management the data reject all models in which accounting reports are verifiable furthermore the version of the pmh in which accounting reports can be manipulated is rejected if expected compensation is restricted to be positive

tax avoidance and the deadweight loss of the income tax traditional analyses of the income tax greatly underestimate deadweight losses by ignoring its effect on forms of compensation and patterns of consumption the full deadweight loss is easily calculated using the compensated elasticity of taxable income to changes in tax rates because leisure excludable income and deductible consumption are a hicksian composite good microeconomic estimates imply a deadweight loss of as much as 30 of revenue or more than ten times harberger s classic 1964 estimate the relative deadweight loss caused by increasing existing tax rates is substantially greater and may exceed 2 per 1 of revenue

balancing the desire for privacy against the desire to hedge risk abstract an individual s desire to hedge risks as implied by risk aversion is accepted as a normative paradigm and documented as valid descriptively insurance markets satisfy this desire wherein the individual s aversion to bear risk allows firms to demand a markup on the expected value of the insured loss insurance firms incrementally introduce digital monitoring technology into their policies making policyholder s behavior transparent we analyze the implications of such transparency insurance contracts for willingness to pay in a framed behavioral experiment and find that the loss of privacy in such contracts marginalizes the potential profits that insurers could earn on their policies in particular our results suggest that the reduction in willingness to pay from introducing digital monitoring is in the range of 25 50 of the expected loss while an absolute as opposed to a relative monetary valuation concept of privacy appears more likely to explain our data we cannot clearly confirm this conjecture empirically heterogeneous treatment effects for risk preferences are suggestive for increasing utility losses from transparency policies with increasing risk aversion but we also observe indications of nonlinearities in this relationship probability misperception is a salient characteristic of our experimental population suggesting that profitability is less threatened under low frequency risks as opposed to high frequency risks

discounting behavior a reconsideration we re evaluate the theory experimental design and econometrics behind claims that individuals exhibit non constant discounting behavior theory points to the importance of controlling for the non linearity of the utility function of individuals since the discount rate is defined over time dated utility flows and not flows of money it also points to a menagerie of functional forms to characterize different types of non constant discounting behavior the implied experimental design calls for individuals to undertake several tasks to allow us to identify these models and to several treatments such as multiple horizons and the effect of allowing for a front end delay on earlier payments the implied econometrics calls for structural estimation of the theoretical models allowing for joint estimation of utility functions and discounting functions using data collected from a representative sample of 413 adult danes in 2009 we draw striking conclusions assuming an exponential discounting model we estimate discount rates to be 5 6 on average this is significantly lower than all previous estimates using controlled experiments we also find no evidence to support quasi hyperbolic discounting or fixed cost discounting and only modest evidence to support other specifications of non constant discounting furthermore the evidence for non constant discounting while statistically significant is not economically significant in terms of the size of the estimated discount rates we undertake extensive robustness checks on these findings including a detailed review of the previous comparable literature

trade standards and poverty evidence from senegal summary in the debate on trade and poverty it is argued that standards act as trade barriers and cause marginalization of the poor this paper quantifies income and poverty effects of high standards trade and integrates labor market effects by using company and household survey data from the vegetable export chain in senegal we find that exports grew sharply despite increasing standards contributing importantly to rural incomes and poverty reduction tightening standards induced a shift from smallholder contract farming to integrated estate production altering the mechanism through which poor households benefit through labor markets instead of product markets

horticultural exports female wage employment and primary school enrolment theory and evidence from senegal abstract in this paper we analyse the indirect effects of the boom in horticultural exports in senegal on child schooling the export boom has caused a dramatic increase in female off farm wage employment which led to increased female bargaining power in the household we investigate the causal effect of female wage income on primary school enrolment we develop a collective household model with endogenous bargaining power to show that if women have higher preferences for schooling than men the impact of female wage income on school enrolment will be the result of a positive income effect a negative labour substitution effect and a positive empowerment effect we address the question empirically using original household survey data from senegal we use different econometric techniques and show that female off farm wage income has a positive effect on primary school enrolment for both boys and girls and that female empowerment is specifically important for the schooling of girls our results imply that the horticultural export boom in senegal has indirectly contributed to the second and third millennium development goals of universal primary education and elimination of gender disparities in primary education

hourly wage rate and taxable labor income responsiveness to changes in marginal tax rates recently a voluminous literature estimating the taxable income elasticity has emerged as an important field in empirical public economics however to a large extent it is still unknown how the hourly wage rate an important component of taxable income reacts to changes in marginal tax rates in this study we use a rich panel data set and a sequence of tax reforms that took place in sweden during the 1980 s to estimate the elasticity of the hourly wage rate with respect to the net of tax rate while carefully accounting for the endogeneity of marginal tax rates as well as other factors that determine wage rates we do find a statistically significant response both among married men and married women the hourly wage rate elasticity with respect to the net of tax rate is estimated to 0 14 0 16 for males and 0 41 0 57 for females in addition we obtain uncompensated taxable labor income elasticities of around 0 21 for men and 0 96 1 44 for women in contrast to earlier studies we also find significant income effects for males accordingly for males the compensated taxable labor income elasticity is about 4 percentage points higher than the uncompensated one

promotion turnover and compensation in the executive labor market this paper develops a generalized roy model with human capital accumulation moral hazard and career concerns we identify and estimate the model with a large panel that matches data on publicly listed firms to information on their executives the structural estimates obtained are used to decompose the firm size pay gap we find that although total compensation and incentive pay increase with firm size certainty equivalent pay decreases with firm size in larger firms and for more highly ranked executives weaker signal quality about effort results in higher risk premiums this risk premium accounts for roughly 80 percent of the firm size gap in total compensation larger firms are also willing to pay more than smaller ones to attract executives finally the estimated coefficients on human capital accumulation from formal education and experience gained from different firms are individually significant but their collective effect on firm size pay differentials nets out

effects of trade and agricultural policies on the structure of the u s tomato industry abstract over the last few decades accelerated growth of mexican tomato imports to the united states has caused several trade disputes with u s growers a data driven approach was used to analyze trade flows in the tomato industry from 1970 to 2015 and all structural changes to policy interventions implemented during the same period were linked tests for endogenous breakpoints reveal that nafta and trade pricing policies are two of the main factors that caused structural changes in the tomato industry in 1992 and 1999 while u s agricultural policies sought to protect domestic tomato producers they did not stop mexican tomatoes from taking an important share of the u s market mexican imports to the united states especially post nafta have a high explanatory power for u s domestic production

global value chains large scale farming and poverty long term effects in senegal this paper presents panel data evidence on the impact of expansion of global value chains and large scale export oriented farms in developing countries over almost a decade we estimate the income effects of wage employment on large scale farms in the horticultural export sector in senegal using data from two survey rounds covering a seven years period of rapid expansion of the sector we estimate average income effects as well as heterogeneous income effects using fixed effects and quantile fixed effects regressions we find that poverty and inequality reduced much faster in the research area than elsewhere in senegal employment in the horticultural export sector is associated with higher household income and the income effect is strongest for the poorest households expansion of the horticultural export sector in senegal has been particularly pro poor through creating employment that is accessible and creates substantial income gains for the poorest half of the rural population these pro poor employment effects contrast with insights in the literature on increased inequality from rural wage employment

risk aversion and incentive effects comment charles a holt and susan k laury 2002 develop an experimental design to determine the risk attitude of an individual they use their observations to argue that increased incentives appear to change risk attitudes leading to greater risk aversion popular utility functions that do not allow for such effects are therefore misspecified building on this finding they estimate a flexible utility function that characterizes their aggregate data well but that does not assume constant absolute or relative risk aversion the basic holt and laury 2002 hl design should become an important tool for the interpretation and design of experiments in which risk attitudes could play a role however their most important result showing the effect of scaling up the stakes of the lottery choice task is confounded by a possible order effect an order effect occurs when prior experience with one task affects behavior in a subsequent task the primary methodological contribution of experiments in economics is to enhance control ideally such control makes the explanatory variables of interest in this case scale orthogonal to other explanatory variables such as order allowing clearer inferences about behavior than one could get from field econometric data we argue that not controlling for order effects results in a misspecification of utility functions that is as important as that of scale the subjects in the hl design were given sequences of three or four tasks as shown in table 1 task 1 involved choices over lotteries with a baseline level of prizes which we will refer to as the 1 scale task 2 involved hypothetical choices over prizes with a scaled up level of prizes either 20 50 or 90 task 3 repeated task 2 but with choices that involved real payoffs task 4 was a return to the baseline task with real 1 prizes in some sessions subjects were not given task 2 or task 3 what could one infer from the comparison of measured risk attitudes in the 1 and 20 tasks in hl unfortunately any observed difference could be due either to the scale of the prizes involved or the task order or some combination of both thus the effect of scale is intrinsically confounded with the possible effect of task order this is a logical flaw in their design which

free markets and fettered consumers are consumers sufficiently self interested and self reliant so that privatized markets deliver the efficiency and welfare gains they promise why are consumers uncomfortable in markets and in some case sufficiently opposed to market solutions to prevent their implementation what can be done to prepare consumers so that they function satisfactorily in markets and understand the advantages of market based resource allocation this paper examines the foundations of consumer behavior and attitudes in markets and proposes a program of scientific research to determine how consumers cope in privatized markets and the implications for market design of the limits of self reliance

exchange asymmetries incorrectly interpreted as evidence of endowment effect theory and prospect theory systematic asymmetries in exchange behavior have been widely interpreted as support for endowment effect theory an application of prospect theory positing that loss aversion and utility function kinks set by entitlements explain observed asymmetries we experimentally test an alternative explanation namely that asymmetries are explained by classical preference theories finding influence through the experimental procedures typically used contrary to the predictions of endowment effect theory we observe no asymmetries when we modify procedures to remove the influence of classical preference theories when we return to traditional type procedures however the asymmetries reappear the results support explanations based in classical preference theories and reject endowment effect theory

adjustment costs firm responses and micro vs macro labor supply elasticities evidence from danish tax records we show that the effects of taxes on labor supply are shaped by interactions between adjustment costs for workers and hours constraints set by firms we develop a model in which firms post job offers characterized by an hours requirement and workers pay search costs to find jobs we present evidence supporting three predictions of this model by analyzing bunching at kinks using danish tax records first larger kinks generate larger taxable income elasticities second kinks that apply to a larger group of workers generate larger elasticities third the distribution of job offers is tailored to match workers aggregate tax preferences in equilibrium our results suggest that macro elasticities may be substantially larger than the estimates obtained using standard microeconometric methods

how can scandinavians tax so much american visitors to scandinavian countries are often puzzled by what they observe despite large income redistribution through distortionary taxes and transfers these are very high income countries they rank among the highest in the world in terms of income per capita as well as most other economic and social outcomes the economic and social success of scandinavia poses important questions for economics and for those arguing against large redistribution based on its supposedly detrimental effect on economic growth and welfare to form a basis for the discussion table 1 shows tax revenues and income tax rates in the three scandinavian countries denmark norway and sweden as compared to other european countries and the united states we see that the tax to gdp ratio and the tax rates on income are much higher in scandinavia than elsewhere the top marginal tax rates are about 60 70 percent in the scandinavian countries as opposed to only 43 percent in the united states the contrast is even more striking when considering the so called participation tax rate which is the effective average tax rate on labor force participation when accounting for the distortions due to income taxes payroll taxes consumption taxes and means tested transfers this tax rate is around 80 percent in the scandinavian countries implying that an average worker entering employment will be able to increase consumption by only 20 percent of earned income due to the combined effect of higher taxes and lower transfers by contrast the average worker in the united states gets to keep 63 percent of earnings when accounting for the full effect of the tax and

time to change what to sow risk preferences and technology adoption decisions of cotton farmers in china this paper examines the role of individual risk attitudes in the decision to adopt a new form of agricultural biotechnology in china i conducted a survey and a field experiment to elicit the risk preferences of chinese farmers who faced the decision of whether to adopt genetically modified bt cotton a decade ago in my analysis i expand the measurement of risk preferences beyond expected utility theory to incorporate prospect theory i find that farmers who are more risk averse or more loss averse adopt bt cotton later farmers who overweight small probabilities adopt bt cotton earlier

consumer inequality aversion and risk preferences in community supported agriculture abstract in community supported agriculture csa consumers face a tradeoff between i the desire to support a csa farmer and obtain environmentally friendly goods and ii the risk associated with a long term commitment we elicit inequality aversion and risk preferences of a sample of 162 french csa consumers using incentivized field experiments we find that csa consumers are concerned about payoff inequalities while we obtain evidence of advantageous inequality aversion toward csa farmers we also find disadvantageous inequality seeking we find that csa consumers are risk averse and loss averse and distort probabilities we also observe that inequality and risk preferences in the loss domain might complement each other to strengthen consumers support for csa farmers

agricultural workers credit rationing and family networks in rural mexico abstractwe use mixed methods and first hand household data in mexico to investigate credit practices by households engaged in agricultural wage employment quantitative analysis shows evidence of rationing in the formal sector but also suggests the existence of mitigating mechanisms qualitative analysis provides additional insights first income patterns associated with agricultural wage generate income smoothing needs that are sometimes better met by the informal sector second family networks can perform key functions as gateways to the formal sector through specific informal arrangements that inject flexibility into formal rules and procedures

attitudes towards large income risk in welfare states an international comparison using survey data and the instrument developed by barsky et al we estimate the distribution of attitudes towards income risk in a country where many employment and health related risks are generously covered by a tax financed social insurance system norway in 2006 under a constant relative risk aversion assumption the sample average for the coefficient of relative risk aversion is 3 8 with standard deviation 2 3 this number is then contrasted to that for five other oecd countries where risk attitudes have been measured using the same instrument and also prior to the financial crisis chile france italy the netherlands and the usa when we relate this distribution for stated relative risk aversion to that for generosity of social insurance and the risks related to employment and health expenditure a picture emerges suggesting that more extensive welfare states induce higher risk tolerance for foreground risks a relationship that is in line with the theory on risk vulnerability

welfare effects of vegetable commercialization evidence from smallholder producers in kenya we investigate whether smallholder horticultural commercialization is able to as often stipulated reduce poverty in developing countries with the help of panel household survey data from kenya we find evidence for a positive association between vegetable commercialization and household welfare even when controlling for unobserved heterogeneity across households interestingly the effect differs depending on which market vegetables are being produced for commercialization through the export market is consistently positively associated with income but not wealth while there is some limited evidence for commercialization through the domestic market channel being positively related to welfare measured by asset holdings and income depending on the specification

choice under uncertainty evidence from ethiopia india and uganda we review experimental evidence collected from risky choice experiments using poor subjects in ethiopia india and uganda using these data we estimate that just over 50 of our sample behaves in accordance with expected utility theory and that the rest subjectively weight probability according to prospect theory our results show that inferences about risk aversion are robust to whichever model we adopt when we estimate each model separately however when we allow both models to explain portions of the data simultaneously we infer risk aversion for subjects behaving according to expected utility theory and risk seeking behaviour for subjects behaving according to prospect theory

tax bases tax rates and the elasticity of reported income abstract tax reforms usually change both tax rates and tax bases using a panel of income tax returns spanning the two major u s tax reforms of the 1980s and a number of smaller tax law changes i find that the elasticity of income reported on personal income tax returns depends on the available deductions this highlights that this key behavioral elasticity is not an immutable parameter but rather that it can be to some extent controlled by policy makers one implication is that base broadening reduces the marginal efficiency cost of taxation the results are very similar for all income categories indicating that the rich are more responsive to tax rates because tax rules that apply to them are different their tax base is narrower the point estimates indicate that the tax reform act of 1986 reduced the marginal cost of collecting a dollar of tax revenue with roughly half of this reduction due to the base broadening and the other half due to the tax rate reduction as a by product the analysis in this paper offers a reconciliation of disparate estimates obtained by previous studies of the tax responsiveness of income

risk aversion experimental evidence from south african fishing communities we estimate the risk attitudes of a large sample of individuals from various fishing communities along the west coast of south africa female fishers and rights holders are found to be more risk averse than their male counterparts while rights holders are found to be less risk averse relative to subjects without fishing rights risk attitudes are found to be correlated with compliance with fisheries regulations in particular a greater degree of risk aversion translates into a reduction in compliance furthermore in the case of gender female fishers and rights holders are more likely to comply with fisheries regulations

risk incomprehension and its economic consequences abstractalmost all theoretical and empirical studies implicitly assume that every economic agent understands the concept of risk we exploited a unique feature of the indonesian family life survey and argued that this assumption may not apply to the developing world a third of working men failed to understand the concept of risk and this incomprehension did not result from a mistake or a preference for simple answers moreover after applying ols we found that relative to risk comprehensive men risk incomprehensive men earned 11 9 per cent less and possessed household assets worth 9 8 per cent less

do higher corporate taxes reduce wages micro evidence from germany because of endogeneity problems very few studies have been able to identify the incidence of corporate taxes on wages we circumvent these problems by using an 11 year panel of data on 11 441 german municipalities tax rates 8 percent of which change each year linked to administrative matched employer employee data consistent with our theoretical model we find a negative effect of corporate taxation on wages a 1 euro increase in tax liabilities yields a 77 cent decrease in the wage bill the direct wage effect arising in a collective bargaining context dominates while the conventional indirect wage effect through reduced investment is empirically small due to regional labor mobility high and medium skilled workers who arguably extract higher rents in collective agreements bear a larger share of the corporate tax burden

contracting out solutions political economy of contract farming in the indian punjab abstract this paper examines the rationale practice and problems of contract farming in vegetable crops in the agriculturally developed indian punjab which has faced the problem of sustainability of growth since the early 1980s it is found that agribusiness firms deal with relatively large producers and their contracts which are biased against the farmer perpetuate the existing problems of the farm sector such as high chemical input intensity and social differentiation contracting has however led to higher farm incomes and more employment for labor there seems to be an inherent contradiction in the objectives of the contracting parties and those of the local economy

high stakes behavior with low payoffs inducing preferences with holt laury gambles abstract kahneman and tversky 1979 argued that risky decisions in high stakes environments can be informed using questionnaires with hypothetical choices yet results by holt and laury 2002 suggest that questionnaire responses and decisions in hypothetical and low monetary payoff environments do not well predict decisions in higher monetary payoff environments this raises the question of whether investigating decision making in high stakes environments requires using high stakes here we show that one can induce preferences using the binary lottery reward technique e g berg et al 1986 in order to study high stakes decision making using low stakes in particular we induce preferences such that decisions in a low stakes environment reflect well the choices made in the high stakes environment of holt and laury 2002 this finding is of interest to anyone interested in studying high stakes decision behavior without paying high stakes

the elasticity of taxable income in the presence of deduction possibilities several recent studies show that the elasticity of taxable income eti is not a sufficient statistic for the welfare costs of taxation due to factors such as tax base shifting this paper provides an additional argument demonstrating the non sufficiency of the eti namely tax deductions building on a theoretical framework which incorporates deductions in a standard optimal tax model we show that the eti is not sufficient for welfare analysis if i deductions generate externalities and if ii deductions are responsive to tax rate changes while the first condition should arguably hold true for the majority of tax deductions we provide an empirical examination of the second condition relying on rich german panel data from administrative tax records we exploit several tax reforms that were implemented in germany between 2001 and 2008 our main estimates indicate an overall eti between 0 54 and 0 68 and an elasticity of deductions with respect to the net of tax rate of about 0 9 these results suggest that the eti is not sufficient to calculate the welfare cost of taxation

the neglect of correlation in allocation decisions we study the effect of variation in correlation on investment decision in an experimental two asset application comparison of allocations across problems suggests that subjects neglect probabilistic information on the joint distribution of returns and base their allocations on the observed return levels for the two assets when asked to predict future returns subjects try to replicate the historical distribution thereby falling into the probability matching bias predictions drastically vary when correlations become negative while allocations are not significantly affected by changes in sign of correlation the observed allocation patterns contradict the predictions of standard models of choice the inconsistency is attributed to common behavioral bias in financial decision field implications of the results are discussed

the elasticity of taxable income evidence and implications abstract a central tax policy parameter that has recently received much attention but about which there is substantial uncertainty is the overall elasticity of taxable income we provide new estimates of this elasticity which address identification problems with previous work by exploiting a long panel of tax returns to study a series of tax reforms throughout the 1980s this identification strategy also allows us to provide new evidence on both the income effects of tax changes on taxable income and on variation in the elasticity of taxable income by income group we find that the overall elasticity of taxable income is approximately 0 4 the elasticity of real income not including tax preferences is much lower we estimate small income effects of tax changes on reported income implying that the compensated and uncompensated elasticities of taxable income are very similar we estimate that this overall elasticity is primarily due to a very elastic response of taxable income for taxpayers who have incomes above 100 000 per year who have an elasticity of 0 57 while for those with incomes below 100 000 per year the elasticity is less than one third as large moreover high income taxpayers who itemize are particularly responsive to taxation our estimates suggest that optimal tax structures may feature tightly targeted transfers to lower income taxpayers and a flat or even declining marginal rate structure for middle and high income taxpayers

loss avoidance as selection principle evidence from simple stag hunt games abstract we investigate experimentally the conjecture that loss avoidance solves the tension in stag hunt games for which payoff dominance and risk dominance make conflicting predictions contrary to received textbook wisdom money losing outcomes do shift behavior albeit not strongly toward the payoff dominant equilibrium

loss aversion under prospect theory a parameter free measurement agrowing body of qualitative evidence shows that loss aversion a phenomenon formalized in prospect theory can explain a variety of field and experimental data quantifications of loss aversion are however hindered by the absence of a general preference based method to elicit the utility for gains and losses simultaneously this paper proposes such a method and uses it to measure loss aversion in an experimental study without making any parametric assumptions thus it is the first to obtain a parameter free elicitation of prospect theory s utility function on the whole domain our method also provides an efficient way to elicit utility midpoints which are important in axiomatizations of utility several definitions of loss aversion have been put forward in the literature according to most definitions we find strong evidence of loss aversion at both the aggregate and the individual level the degree of loss aversion varies with the definition used which underlines the need for a commonly accepted definition of loss aversion

the safety first expected utility model experimental evidence and economic implications abstract roy s roy a 1952 safety first and the holding of assets econometrica 20 3 431 449 safety first criterion advocates the minimization of the probability of outcomes below a certain disaster level this paper examines safety first theoretically and experimentally we find that safety first plays a crucial role in decision making inducing choices that cannot be explained by and even contradict risk aversion prospect theory and loss aversion in general yet safety first alone cannot explain individual choice therefore we propose an expected utility safety first eu sf model where decisions are made based on a weighted average of the safety first criterion and standard expected utility maximization we experimentally estimate these relative weights and discuss their economic implications