a review of wta wtp studies abstract willingness to accept wta is usually substantially higher than willingness to pay wtp these constructs have been studied for roughly 30 years and with a wide variety of goods this paper reviews those studies we find that the less the good is like an ordinary market good the higher is the ratio the ratio is highest for non market goods next highest for ordinary private goods and lowest for experiments involving forms of money a generalization of this pattern holds even when we account for differences in survey design ordinary goods have lower ratios than non ordinary ones we also find that ratios in real experiments are not significantly different from hypothetical experiments and that incentive compatible elicitation yields higher ratios

referenda under oath herein we explore whether a solemn oath can eliminate hypothetical bias in a voting referenda a popular elicitation mechanism promoted in non market valuation exercises for its incentive compatibility properties first we reject the null hypothesis that a hypothetical bias does not exist second we observe that people who sign an oath are significantly less likely to vote for the public good in a hypothetical referenda we complement this evidence with a self reported measure of honesty which confirms that the oath increases truthfulness in answers this result opens interesting avenues for improving the elicitation of preferences in the lab and beyond

the propagation of monetary policy shocks in a heterogeneous production economy abstract realistic heterogeneity in price rigidity interacts with heterogeneity in sectoral size and input output linkages in the transmission of monetary policy shocks quantitatively heterogeneity in price stickiness is the central driver for real effects input output linkages and consumption shares alter the identity of the most important sectors to the transmission reducing the number of sectors decreases monetary non neutrality with a similar impact response of inflation hence the initial response of inflation to monetary shocks is not sufficient to discriminate across models and ignoring heterogeneous consumption shares and input output linkages identifies the wrong sectors from which the real effects originate

the influence of collective action on the demand for voluntary climate change mitigation in hypothetical and real situations in this experiment we investigate determinants of the individual demand for voluntary climate change mitigation subjects decide between a cash prize and an allowance from the eu emissions trading scheme for one ton of co2 that will be deleted afterwards we vary the incentives of the decision situation in which we distinguish between real monetary incentives and a hypothetical decision situation with and without a cheap talk script furthermore decisions were implemented either as purely individual or as a collective action using majority voting we observe a significant hypothetical bias in the demand for voluntary climate change mitigation in case of the individual decision situation this bias is caused solely by subjects with low income collective decision making affects demand positively in the hypothetical decision situation only

price changes in the euro area and the united states some facts from individual consumer price data prices of goods and services do not adjust immediately in response to changing demand and supply conditions this paper characterizes the average frequency and size of price changes in the euro area and its member countries investigates the determinants of the probability of price changes and compares the evidence for the euro area with available u s results the facts documented in this paper are based on evidence from individual price data recorded at the store level in all euro area countries except ireland and greece that is in datasets covering austria belgium finland france germany italy luxembourg the netherlands portugal and spain which together account for around 97 percent of euro area gdp the data used are the monthly price records underlying the computation of national consumer price indices and harmonized consumer price indices these data cover a large number of products selected on the basis of extensive household budget surveys

the long term impact of matching and rebate subsidies when public goods are impure field experimental evidence from the carbon offsetting market in this paper we investigate both short and long term impacts of financial stimuli on public goods provision when contributions are tied to individual harm related behavior we conduct a large scale field experiment to examine voluntary contributions to a carbon offsetting program during the online purchase of a bus ticket we systematically vary the individual payoff structure by introducing different price rebates 25 50 75 and corresponding matching grants 1 3 1 1 1 3 1 using data on returning customers we investigate the long term effects of the different stimuli both while treatments were in place as well as their persistence for the time after treatment removal in the first bookings our results show that all price rebate schemes increase the participation rate in the offsetting program while we find weaker effects for matching grants when bookers are treated repeatedly only the equal 1 1 matching scheme continues to lead to higher participation rates even after removing the subsidies we report higher participation rates for customers previously facing a 1 1 matching scheme this treatment is also the only one increasing net contributions of customers compared to the control group

optimal monetary policy responses to relative price changes abstract an optimizing model with a flexible price sector and a sticky price sector is presented to analyze the effects of relative price changes on inflation fluctuations the relative price of the flexible price good represents a shift parameter of the new keynesian phillips curve the optimal monetary policy is to target sticky price inflation rather than a broad inflation measure although stabilizing the relative price around its efficient value is one of the appropriate goals of the central bank stabilizing sticky price inflation is sufficient for achieving this goal an optimal monetary policy for a small open economy is also discussed

behavioral economics for environmental policy abstract the predictions of widely prescribed global and country level environmental policies at present are based mainly on mainstream economic models which treat individual actors to be unboundedly rational in their decision making in recent years however behavioral and experimental economists have found that the individual actors in many circumstances act within a bounded rationality framework suggesting that predictions based on the unbounded rationality models would be less valid while some of mainstream economists have already started adopting the bounded rationality based models in their academic discourse many environmental economists seem to be reluctant to use these alternative models of rationality in their research and policy prescriptions this paper highlights the implications of using bounded rationality models in environmental research in general and policymaking in particular

willingness to accept willingness to pay and the income effect abstract the gap between willingness to pay wtp and willingness to accept wta has previously been studied by searching for evidence of substitutability the neoclassical hypothesis or status quo bias testing for neoclassical versus psychological theories of preferences we study the gap differently asking whether the observed pairs of wta and wtp are consistent with neoclassical preferences we use sugden s alternatives to the neoclassical theory of choice in i bateman k g willis eds valuing environmental preferences theory and practice of the contingent valuation method in the us eu and developing countries oxford university press oxford pp 152 180 chapter 6 result showing that the effect of income on wtp can be approximated from information on the ratio wta wtp drawing inferences from a meta analysis of 201 wta wtp ratios we conclude that the data are not consistent with neoclassical preferences

preserving waterfowl habitat on the canadian prairies economic incentives versus moral suasion this paper examines a pilot project of nawmp that encourages farmers to promote or maintain waterfowl habitat by relying not only on economic incentives but on awareness education and moral suasion the pilot project relies on farmers attitudes to keep payments low because project payments substitute for grain program subsidies thus constituting a transfer from canadian taxpayers to u s contributors to nawmp a survey instrument and regression analysis are used to examine attitudes economic incentives and willingness to pay and willingness to accept compensation for modifying land use in order to conserve waterfowl habitat the results indicate that current economic incentives offered to agricultural producers are inadequate because they ignore nonmarket costs and that a positive attitude toward habitat preservation cannot be used as a substitute for monetary incentives

the short run and long run effects of behavioral interventions experimental evidence from energy conservation we document three remarkable features of the opower program in which social comparison based home energy reports are repeatedly mailed to more than six million households nationwide first initial reports cause high frequency action and backsliding but these cycles attenuate over time second if reports are discontinued after two years effects are relatively persistent decaying at 10 20 percent per year third consumers are slow to habituate they continue to respond to repeated treatment even after two years we show that the previous conservative assumptions about post intervention persistence had dramatically understated cost effectiveness and illustrate how empirical estimates can optimize program design jel d12 d83 l94 q41

on the self interested use of equity in international climate negotiations abstract we discuss self interested uses of equity arguments in international climate negotiations using unique data from a world wide survey of agents involved in international climate policy we show that the perceived support of different equity rules by regions may be explained by the ranking of their economic costs despite being self interested equity arguments may be perceived as being used for different reasons for example out of fairness considerations or in order to facilitate negotiations consistent with experimental and behavioral studies on fairness perceptions we find that individuals are more likely to state reasons with positive attributes if they evaluate their own region or regions that support the individual s personally preferred equity rule negotiators perceive the use of equity by regions as less influenced by pressure from interest groups

environmental protection and the private provision of international public goods final version received 11 september 2008 international environmental protection like the combat of global warming exhibits properties of publicgoods in the international arena no coercive authority exists that can enforce measures to overcome free rider incentives therefore decentralized negotiations between individual regions serve as an approach topursue ef cient international environmental protection we propose a scheme which is based on the ideasof coasean negotiations and pigouvian taxes the negotiating entities offer side payments to counterpartsin order to in uence their taxation of polluting consumption side payments in turn are self nanced bymeans of externality correcting taxes as we show a pareto ef cient outcome can be attained

optimal emissions tax rates under habit formation and social comparisons abstract the existing climate models ignore the behavioral anomalies of households and conclude that the optimal environmental tax rate should comove with business cycles however this assumption has received extensive criticism recently to this end this paper studies the optimal emissions tax rate when households are bounded rational in particular we calculate the optimal climate policy in a dynamic stochastic general equilibrium dsge model that features households with habit formation internal habits and social comparisons external habits compared to the benchmark model without consumption externality the social comparisons model amplifies consumption volatility but produces a similar response of pollutant emissions in the presence of the three types of economic shocks considered in contrast the habit formation model decreases the volatility of both consumption and pollutant emissions in contrast to the previous result that the optimal emissions tax rate should be procyclical we find that the social comparisons model largely mitigates the procyclicality of optimal emissions tax rates and the optimal emissions tax rates under the habit formation model remain constant in response to all the economic shocks considered

monetary policy and food inflation in south africa a quantile regression analysis abstract although optimal monetary policy stabilizes food inflation theoretically empirical studies remain limited not only in the context of volumes and the estimation approaches but are focused on selected advanced and emerging countries to the neglect of africa where poverty and dominance of food in the consumption basket are more pronounced we provide empirical evidence in the context of south africa using quantile regressions rising food prices are destabilized even further by restrictive monetary policy a finding that has ramifications for inflation targeting especially given that a quarter of the country s population is food poor

behavioral environmental economics promises and challenges environmental issues provide a rich ground for identifying the existence and consequences of human limitations in this paper we present a growing literature lying at the interface between behavioral and environmental economics this literature identifies alternative solutions to traditional economic instruments in environmental domains that often work imperfectly but it also faces a set of challenges including the difficulty of computing welfare effects and the identification of a robust environmental policy based on context dependent socio psychological effects we illustrate our critical discussion with two behavioral schemes that have been widely implemented green nudges and corporate environmental responsibility

paying for mitigation a multiple country study a contingent valuation study conducted in china sweden and the united states was used to investigate citizens willingness to pay wtp for reducing co2 emissions we find that a majority of the respondents in all three countries believe that the mean global temperature has increased over the last 100 years and that humans are responsible for the increase the share of americans that believes these statements is smaller and a relatively larger share of americans also believes that nothing can be done to stop climate change sweden has the highest wtp while china has the lowest jel q51 q54

successful leadership in global public good provision incorporating behavioural approaches in the standard model of voluntary public good provision and other game theoretic models climate friendly leadership of a country is not successful a unilateral increase of this country s greenhouse gas abatement measures i e contributions to the global public good of climate protection will not lead to a positive reaction by the other countries but instead trigger a reduction of their abatement efforts and thus a crowding out effect in this paper it is shown how this undesired consequence need no longer occur when elements of behavioral economics are incorporated in the otherwise standard model of public good provision in particular strategic complementarities between the public good contribution of the leading country and those of the follower may result either if the follower has specific non egoistic or other regarding preferences or if the leader s contribution positively affects the follower s beliefs i e his conjectural variations about the leader s behaviour

should central banks target consumer prices or the exchange rate in this article we consider two arguments suggesting that monetary authorities in an open economy should target output price inflation and not consumer price inflation the first suggests that output price inflation corresponds to the distortions caused by price rigidity the second shows how policy rules involving consumer price inflation can induce instability because of the feedback from interest rates to consumer price inflation via the exchange rate we examine both arguments in the context of an open economy which is subject to a range of shocks we show that both arguments remain robust but that there is a case for including a terms of trade or real exchange rate gap term in the authorities welfare function alongside the output gap and output price inflation

the cyclicality of sales regular and effective prices business cycle and policy implications author s coibion olivier gorodnichenko yuriy hong gee hee abstract we study the cyclical properties of sales regular price changes and average prices paid by consumers effective prices using data on prices and quantities sold for numerous retailers across many us metropolitan areas inflation in the effective prices paid by consumers declines significantly with higher unemployment while little change occurs in the inflation rate of prices posted by retailers this difference reflects the reallocation of household expenditures across retailers a feature of the data which we document and quantify rather than sales we propose a simple model with household store switching and assess its implications for business cycles and policymakers jel d12 e31 e32 l25 l81

the benefits and costs of riparian analysis habitat preservation a willingness to accept willingness to pay contingent valuation approach abstract the contingent valuation method cvm was used to obtain the willingness to pay wtp of households in the contiguous area of the garonne river near toulouse france and the willingness to accept wta of households that currently own land on the banks of the river to provide a strip of riparian land for habitat preservation results for the wtp study indicated a relatively large difference in wtp between open and closed ended responses when corrected for the substantial number of 0 observations the wtp was reduced by about half the wta results were constrained by relatively few positive responses however the value given by farmers who indicated a positive wta appears consistent with revenues generated from crops moreover many farmers who were already providing habitat preservation indicated a zero minimum wta although the small number of wta responses severely limits the ability to draw definitive conclusions a comparison of the derived benefits wtp and costs wta was made which appeared to suggest the possibility of a favorable a benefit cost ratio

aggregative environmental games this paper expounds a new approach to the analysis of public good and open access resource models developed in a series of recent papers by cornes and hartley and considers the applicability of this approach to modeling current environmental problems i look at a number of possible extensions of the framework survey recent applications to environmental problems and suggest further possible lines of enquiry

the behavioural economics of climate change this paper attempts to bring some central insights from behavioural economics into the economics of climate change in particular it discusses i implications of prospect theory the equity premium puzzle and time inconsistent preferences in the choice of discount rate used in climate change cost assessments and ii the implications of various kinds of social preferences for the outcome of climate negotiations several reasons are presented for why it appears advisable to choose a substantially lower social discount rate than the average return on investments it also seems likely that taking social preferences into account increases the possibilities of obtaining international agreements compared to the standard model however there are also effects going in the opposite direction and the importance of sanctions is emphasized

new keynesian economics and the phillips curve models with sticky prices are an important part of new keynesian economics the author shows that several of the new keynesian models imply a formulation that is similar to the expectations augmented phillips curve of milton friedman and edmund phelps he then presents new estimates of the new keynesian phillips curve the author uses two proxies for price expectations survey based measures and an econometric based measure originally developed by bennett mccallum 1976 overall the results are consistent with the model but the survey based results are more precise suggesting that the surveys may be better measures of actual expectations copyright 1995 by ohio state university press

sticker shocks using vat changes to estimate upper level elasticities of substitution we estimate the upper level elasticity of substitution between goods and services of a nested aggregate ces preference specification we show how this elasticity can be derived from the long run response of the relative price of a good to a change in its vat rate we estimate this elasticity using new data on changes in vat rates across 74 goods and services for 25 european union countries from 1996 through 2015 depending on the level of aggregation we find a vat pass through rate between 0 4 and 0 7 this implies an upper level elasticity of 3 at the lowest level of aggregation with 74 categories and 1 cobb douglas preferences at a high level of aggregation that distinguishes 10 categories of goods and services

international environmental agreements and strategic voting two anonymous referees have provided very valuable comments and suggestions we have also benefited from discussions at seminars at the universities of bonn dortmund and dresden and at the conferences of euresco the european economic association and the verein fur socialpolitik this paper was partly written while haupt was visiting the economics department at the university of colorado at boulder he is very grateful to the members of the department particularly to eckhard janeba for their hospitality and for stimulating discussions and to the fritz thyssen stiftung for funding his research visit we also thank the deutsche forschungsgemeinschaft dfg for financial support

relative price changes as aggregate supply shocks this paper proposes a theory of supply shocks or shifts in the short run phillips curve based on relative price changes and frictions in nominal price adjustment when price adjustment is costly firms adjust to large shocks but not to small shocks and so large shocks have disproportionate effects on the price level therefore aggregate inflation depends on the distribution of relative price changes inflation rises when the distribution is skewed to the right and falls when the distribution is skewed to the left we show that this theoretical result explains a large fraction of movements in postwar u s inflation moreover our model suggests measures of supply shocks that perform better than traditional measures such as the relative prices of food and energy

viewpoint on the generalizability of lab behaviour to the field abstract we can think of no question more fundamental to experimental economics than understanding whether and under what circumstances laboratory results generalize to naturally occurring environments in this paper we extend levitt and list 2006 to the class of games in which financial payoffs and doing the right thing are not necessarily in conflict we argue that behaviour is crucially linked to not only the preferences of people but also the properties of the situation by doing so we are able to provide a road map of the psychological and economic properties of people and situations that might interfere with generalizability of laboratory result from a broad class of games

rationality of self and others in an economic system in this paper i want to disentangle some of the senses in which the hypothesis of rationality is used in economic theory in particular i want to stress that rationality is not a property of the individual alone although it is usually presented that way rather it gathers not only its force but also its very meaning from the social context in which it is embedded it is most plausible under very ideal conditions when these conditions cease to hold the rationality assumptions become strained and possibly even self contradictory they certainly imply an ability at information processing and calculation that is far beyond the feasible and that cannot well be justified as the result of learning and adaptation let me dismiss a point of view that is perhaps not always articulated but seems implicit in many writings it seems to be asserted that a theory of the economy must be based on rationality as a matter of principle otherwise there can be no theory this position has even been maintained by some who accept that economic behavior is not completely rational john stuart mill 1909 bk 2 ch 4 argued that custom not competition governs much of the economic world but he adds that the only possible theory is that standard economic doctrine makes assumptions of rationality that have very strong implications for the complexity of individuals decision processes the most complete assumptions of competitive general equilibrium theory require that all future and contingent prices exist and be known in fact of course not all these markets exist the incompleteness of markets has several side consequences for rationality for one thing each decision maker has to have a model that predicts the future spot prices this is an informational burden of an entirely different magnitude than simply optimizing at known prices it involves all the complexity of rational analysis of data and contradicts the much praised informational economy of the price system it is also the case that equilibria become much less well defined similar problems occur with imperfect competition this research was supported by the office of naval research grant onr n00014 79 c 0685 at the center for research in organizational efficiency institute for mathematical studies in the social sciences stanford university stanford california

the persistence of treatment effects with norm based policy instruments evidence from a randomized environmental policy experiment during a 1977 fireside chat president jimmy carter famously appealed to american hom eowners to set their thermostats at 65 degrees to help conserve supplies of natural gas and fuel oil norm based strategies are commonly used to influence a range of private behaviors with public consequences including alcohol and drug use gambling and resource consump tion in the last decade these strategies increas ingly emphasize the use of social comparisons to motivate behavioral changes efforts to use such comparisons build upon leon festinger s 1954 social comparison theory which posits that individuals validate the appropriateness of an action or thought through comparison to others a subsequent literature in social psychol ogy argues that strategies based on this theory provide an effective means to promote environ mental conservation see e g tim kurz ngaire donaghue and ian walker 2005 p wesley schultz et al 2007 noah j goldstein robert b cialdini and vladas griskevicius 2008 jessica m nolan et al 2008 in this literature the work by schultz et al 2007 has proven most influential and forms the basis of opower s well cited social comparison approach for

contingent valuation of ecotourism in annapurna conservation area nepal implications for sustainable park finance and local development abstract to determine willingness to pay wtp for candidate entry fees contingent valuation surveys were administered to 315 foreign visitors to the annapurna conservation area nepal during april and may of 2006 the results of logit regression showed that the bid amount family size visitors satisfaction the use of a guide and group size were the most significant predictors of wtp results suggest that most visitors would be willing to pay an entry fee considerably higher than the current fee of 27 u s dollars usd the mean and median wtp were 69 2 and 74 3 usd respectively the most common explanation for wtp by respondents was a desire to better protect the environment the most common explanation for unwillingness to pay was that the bid was simply too expensive two models were developed based upon different predictions of visitor numbers an optimistic case and pessimistic case to calculate the expected revenue production and likely gross local economic impact of candidate entry fees based on this analysis we recommend an increase in the entry fee to usd 50 in the optimistic scenario this higher entry fee leaves a budget surplus in the pessimistic scenario it would reduce current budget deficits

two cheers and a qualm for behavioral environmental economics behavioral economics can gain more in roads into environmental economics if we better understand why exchange institutions fail more effectively reduce health risks and environmental conflicts encourage more coordination and cooperation design better incentive systems more accurately estimate economic measures of value and promote more protection at less cost behavioral economics deserves two cheers for advancing ideas of context dependence and social preferences which we illustrate with two examples of recent research

incomplete pass through and the welfare effects of exchange rate variability abstract this paper considers the implications of incomplete exchange rate pass through for optimal monetary and exchange rate policy a two country model is presented which allows an explicit derivation of welfare functions in terms of a weighted sum of the second moments of producer prices and the nominal exchange rate from a single country perspective the optimal exchange rate variance depends on the degree of pass through the size and openness of the economy the elasticity of labour supply and the volatility of foreign producer prices welfare may be decreasing or increasing in the volatility of the exchange rate

smoothed interest rate setting by central banks and staggered loan contracts i investigate a new source of economic stickiness namely staggered loan interest rate contracts under monopolistic competition this study introduces this mechanism into a standard new keynesian model simulations show that a response to a financial shock is greatly amplified by the staggered loan contracts although a response to a productivity cost push or monetary policy shock is not much affected i derive an approximated loss function and analyse optimal monetary policy unlike other models the function includes a quadratic loss of the first order difference in loan rates thus central banks have an incentive to smooth the policy rate

behavioral economics and public policy a pragmatic perspective the debate about behavioral economics the incorporation of insights from psychology into economics is often framed as a question about the foundational assumptions of economic models this paper presents a more pragmatic perspective on behavioral economics that focuses on its value for improving empirical predictions and policy decisions i discuss three ways in which behavioral economics can contribute to public policy by oering new policy tools improving predictions about the eects

the role of countercyclical monetary policy when firms set nominal prices in advance optimal monetary policy insulates aggregate output against shocks to demand it can do so however by following the constant money growth rule advocated by milton friedman it need not respond to the shocks in an actively countercyclical way in addition to the extent that output fluctuations are driven by shocks to supply money growth should be procyclical

optimal inflation rates with the trending relative price of investment abstract i study the effect of the trending relative price of investment on the optimal target rate of inflation in an estimated dynamic general equilibrium model of the u s economy the price of investment has a decreasing trend relative to that of consumption because of investment specific technological progress if the prices of investment goods are sticky a benevolent planner puts weight on stabilizing these prices which works to raise the optimal target rate of inflation in terms of the price of consumption the estimated model shows a high degree of price stickiness in an investment sector and the resulting optimal target rate of inflation is significantly positive this result is robust to an extended model in which the prices of some categories of investment goods are flexible

attitudes toward catastrophe in light of climate change and other global threats policy commentators sometimes urge that society should be more concerned about catastrophes this paper reflects on what society s attitude toward low probability high impact events is or should be we first argue that catastrophe risk can be conceived of as a spread in the distribution of losses based on this conception we review studies from decision sciences psychology and behavioral economics that explore people s attitudes toward various social risks contray to popular belief we find more evidence against than in favor of catastrophe aversion the preference for a mean preserving contraction of the loss distribution and discuss a number of possible behavioral explanations next we turn to social choice theory and examine how various social welfare functions handle catastrophe risk we explain why catastrophe aversion may be in conflict with equity concerns and other regarding preferences finally we discuss current approaches to evaluate and regulate catastrophe risk

a new meta analysis on the wtp wta disparity abstract this study reports a new meta analysis of papers that elicit willingness to pay wtp and willingness to accept compensation wta measures of value for the same good we investigate the effects of type of good and several survey design features on the wtp wta disparity measured as the logarithm of the ratio of mean wta to mean wtp confirming horowitz and mcconnell s 2002 pioneering meta analysis we find the disparity is smaller for ordinary private goods than for public and non market goods that it is not solely an artifact of using hypothetical transactions or other weak experimental or survey methods and that it is smaller for studies using student subjects in addition we find that the disparity is smaller when subjects have experience valuing the good in real markets or through repeated experimental trials in contrast to horowitz and mcconnell we find the disparity is significantly smaller in studies using incentive compatible elicitation mechanisms the disparity is smaller in more recent studies an effect that is attributable only in part to changes in study characteristics

the effects of real and monetary shocks in a business cycle model with some sticky prices an established characteristic of macroeconomic fluctuations is the strong positive correlation between variations in the money stock and variations in production income and employment at business cycle frequencies this finding has motivated an enormous literature that has studied the effects of monetary policy disturbances on the real economy and in particular the role of money in business cycles several classes of monetary business cycle models have been developed that feature different channels through which monetary policy can have real effects one model that has been used widely is the keynesian model in which monetary shocks can have important effects on allocations because there are nominal rigidities in prices and or wages the keynesian assumption of sticky nominal prices is often motivated by reference to studies that have analyzed the frequency of nominal price changes the broad conclusion that emerges from this literature is that there are a number of goods that have prices that appear to change infrequently for example carlton 1989 has reported slow changes in nominal transactions prices for producers goods even without long term relationships between buyers and sellers and has documented that delivery lags and other product characteristics frequently change before nominal prces change similarly blinder s survey 1991 of firms shows that prices for many goods change only about once per year while this evidence

do extrinsic incentives undermine social norms evidence from a field experiment in energy conservation policymakers use both extrinsic and intrinsic incentives to induce consumers to change behavior this paper investigates whether the use of extrinsic financial incentives is complementary to intrinsic incentives or whether financial incentives undermine the effect of intrinsic incentives we conduct a randomized controlled trial that uses information interventions to residential electricity customers to test this question we find that adding economic incentives to normative messages not only does not strengthen the effect of the latter but may reduce it these results are consistent with recent theoretical work that suggests a tension between intrinsic motivation and extrinsic incentives

the role of uncertainty in the term structure of interest rates a garch atsm approach this article examines the roles of uncertainties regarding various macro variables in determining risk premiums of bond yields we develop a multivariate garch var to quantify uncertainties regarding inflation real activities and monetary policy as time varying conditional variances we jointly estimate the multivariate garch and no arbitrage bond pricing equations using a maximum likelihood method the results indicate that the inflation uncertainty is the largest contributor to the dynamics of long term yields since the 1980s while the monetary policy uncertainty also plays noticeable roles