government policy with time inconsistent voters behavioral economics presents a paternalistic rationale for benevolent government intervention this paper presents a model of public debt where voters have self control problems and attempt to commit using illiquid assets in equilibrium government accumulates debt to respond to individuals desire to undo their commitments which leads individuals to rebalance their portfolio in turn feeding into a demand for further debt accumulation as a consequence i large and distortionary government debt accumulation occurs and ii banning illiquid assets could improve individuals welfare these results offer a new rationale for balanced budget rules in constitutions to restrain governments responses to voters self control problems

global warming and hyperbolic discounting the use of a constant discount rate to study long lived environmental problems such as global warming has two disadvantages the prescribed policy is sensitive to the discount rate and with moderate discount rates large future damages have almost no effect on current decisions time consistent quasi hyperbolic discounting alleviates both of these modeling problems and is a plausible description of how people think about the future we analyze the time consistent markov perfect equilibrium in a general model with a stock pollutant the solution to the linear quadratic specialization illustrates the role of hyperbolic discounting in a model of global warming

life cycle consumption and hyperbolic discount functions abstract studies of animal and human behavior suggest that discount functions are approximately hyperbolic ainslie picoeconomics 1992 hyperbolic models explain a wide range of empirical anomalies including 1 missing precautionary savings effects 2 incongruence between the elasticity of intertemporal substitution and the inverse of the coefficient of relative risk aversion 3 consumption discontinuities at retirement 4 variation in patience over the life cycle 5 consumer self reports of undersaving 6 disproportionate retirement accumulation in illiquid assets 7 asset specific marginal propensities to consume and 8 declining national savings rates in developed countries hyperbolic models also provide a new framework for analyzing the welfare gains that come from pro saving policies like social security and tax deferred retirement accounts

working over time dynamic inconsistency in real effort tasks experimental tests of dynamically inconsistent time preferences have largely relied on choices over time dated monetary rewards several recent studies have failed to nd the standard patterns of present bias however such monetary studies contain oftendiscussed confounds in this paper we sidestep these confounds and investigate choices over consumption real eort in a longitudinal experiment we pair this eort study with a companion monetary discounting study we conrm very limited time inconsistency in monetary choices however subjects show considerably more present bias in eort furthermore present bias in the allocation of work has predictive power for demand of a meaningfully binding commitment device therefore our ndings validate a key implication of models of dynamic inconsistency with corresponding policy implications

the hyperbolic consumption model calibration simulation and empirical evaluation ur preferences for the long run tend to conflict with our short run behavior when planning for the long run we intend to meet our deadlines exercise regularly and eat healthfully but in the short run we have little interest in revising manuscripts jogging on the stairmaster and skipping the chocolate souffleala mode delay of gratification is a nice long term goal but instant gratification is disconcertingly tempting this gap between long run intentions and short run actions is apparent across a wide range of behaviors including saving choices a 1997 survey found that 76 percent of respondents believe they should be saving more for retirement looking only at respondents who believed they were at an age where you should be seriously saving already the survey found that 55 percent reported being behind in their savings and only 6 percent reported being ahead farkas and johnson 1997 the report on the survey concluded t he gaps between people s atti tudes intentions and behavior are troubling and threaten increased insecurity and dissatisfaction for people when they retire americans are simply not doing what logic and their own reasoning suggests they should be doing a 1993 luntz webber merrill lynch survey found similar answers when baby boomers were asked what percentage of your annual household income do you think you should save for retirement and what percentage of your annual

the limits of political compromise debt ceilings and political turnover we study the desirability of limits on the public debt and of political turnover in an economy where incumbents have an incentive to set public expenditures above the socially optimal level due to rent seeking motives parties alternate in office and cannot commit to future policies but they can forge a political compromise where each party curbs excessive spending when in office if it expects future governments to do the same in contrast to the received literature we find that strict limits on government borrowing can exacerbate political economy distortions by making a political compromise unsustainable this tends to happen when political turnover is limited conversely a tight limit on the public debt fosters a compromise that yields the efficient outcome if political turnover is vigorous our analysis thus suggests that to sustain good economic policies a society needs to restrict either the extent of political turnover or the ability of governments to issue debt but not both

micro targeting and polarization abstract this paper connects the rise in polarization to changes in media technology which allow for higher precision in the advertising strategy of candidates candidates place ads in media outlets whose audiences differ in ideology and size we develop the concept of media centrality which takes into account differences in the media network and in ideology media centrality leads to a simple characterization of both the optimal targeting strategy and policy we show that generally a more fragmented media landscape leads to an increase in polarization

a comparison of the discounted utility model and hyperbolic discounting models in the case of social and private intertemporal preferences for health whilst there is substantial evidence that hyperbolic discounting models describe intertemporal preferences for monetary outcomes better than the discounted utility du model there is only very limited evidence in the context of health outcomes this study elicits private and social intertemporal preferences for non fatal changes in health specific functional forms of the du model and three hyperbolic models are fitted the results show that the stationarity axiom is violated and that the hyperbolic models fit the data better than the du model intertemporal preferences for private and social decisions are found to be very similar

international tax competition and the deficit bias i analyze the dynamic effects of tax competition on public budget deficits i find that stronger tax competition leads to a fiscal deficit bias at the early stages of financial liberalization when countries differ in terms of capital mobility further liberalization leads to external imbalances and diverging fiscal deficits while corporate tax rates converge consistent with theory i find that stronger tax competition increases deficits in a sample of oecd countries controlling for tax revenues and other standard determinants of fiscal deficits jel e62 f62

temptation and taxation we study optimal taxation when consumers have temptation and self control problems embedding the class of preferences developed by gul and pesendorfer into a standard macroeconomic setting we first prove in a two period model that the optimal policy is to subsidize savings when consumers are tempted by excessive impatience the savings subsidy improves welfare because it makes succumbing to temptation less attractive we then study an economy with a long but finite horizon which nests as a special case the phelps pollak laibson multiple selves model thereby providing guidance on how to evaluate welfare in this model we prove that when period utility is logarithmic the optimal savings subsidies increase over time for any finite horizon moreover as the horizon grows large the optimal policy prescribes a constant subsidy in contrast to the well known chamley judd result

the politics of intergenerational redistribution this paper studies the political economic equilibrium of a two period model with overlapping generations in each period the policy is chosen under majority rule by the generations currently alive the paper identifies a politically viable set of values for public debt any amount of debt within this set is fully repaid in equilibrium even without commitments by issuing debt within this set the first generation redistributes revenue in its favor and away from the second generation the paper characterizes the determinants of the equilibrium intergenerational redistribution and identifies a difference between debt and social security as instruments of redistribution

budget deficits and redistributive politics this paper proposes a new view of the forces in the political process that cause governments to accumulate debt the analysis builds on a model of redistributive politics that contrary to median voter models does not restrict the set of policies that politicians can propose i show that deficits occur even in an environment where voters and periods are homogeneous this is an environment where previous political theories of debt would predict budget balance in the model deficits are a way for candidates to better target promises to voters and are therefore used as tools of redistributive politics the main contribution of the analysis is to show that the same forces that push candidates to redistribute resources across voters to pursue political advantage are forces that generate budget deficits most countries have sizeable national debts indeed thinking of governments as debtors seems so customary that it feels awkward to talk about a national credit this suggests that there are systematic forces pushing governments to regularly borrow to cover the excess of spending over receipts at the same time a significant amount of government spending consists of transfers to special interest groups that are hard to justify on efficiency or equity grounds this paper presents a political economic model that suggests that these two phenomena are connected debt is at least in part caused by the fact that in order to get elected candidates need to appeal to groups of voters with promises of transfers debt allows candidates a finer control over the promises they make to these groups

vertical integration scale distortions partial integration and the direction of price change two new features are introduced in a standard model of forward vertical integration by an intermediate good monopolist into a contestable downstream industry first u shaped average costs replace constant returns in the downstream industry second the effect of subjecting the monopolist to the pressure of upstream entry is explored it is found that monopoly pricing of the intermediate good can distort the scale as well as the input proportions of the downstream firms either distortion leads to integration but here integration may be partial rather than full prices rise with partial integration when there is no upstream entry but prices fall when upstream entry is free

retrospective voting and party polarization we provide a new and favorable perspective on voter naivete and party polarization we contrast sophisticated nash versus retrospective voting in a model where two parties commit to policies retrospective voters do not understand the mapping between states and outcomes induced by a policy instead they simply vote for the party that delivers the highest observed performance as determined in equilibrium we show that parties have an incentive to polarize under retrospective compared to nash voting moreover this polarization often results in higher welfare due to a better match between policies and fundamentals

a political theory of government debt and deficits in a neo ricardian framework in the presence of different abilities and therefore different bequests some individuals are bequest constrained even in a neo ricardian world such individuals vote for taxes on future generations through the issuance of bonds thereby increasing their current consumption this produces some crowding out of capital reduces wage rates and increases the interest rate as a consequence even unconstrained individuals are no longer indifferent to the size of government debt the paper derives conditions that are conducive to larger debt and deficits when each of the living generations determines current taxes social security benefits and the national debt by majority rule copyright 1989 by american economic association

belief in a just world and redistributive politics international surveys reveal wide differences between the views held in different countries concerning the causes of wealth or poverty and the extent to which people are responsible for their own fate at the same time social ethnographies and experiments by psychologists demonstrate individuals recurrent struggle with cognitive dissonance as they seek to maintain and pass on to their children a view of the world where effort ultimately pays off and everyone gets their just deserts this paper offers a model that helps explain i why most people feel such a need to believe in a just world ii why this need and therefore the prevalence of the belief varies considerably across countries iii the implications of this phenomenon for international differences in political ideology levels of redistribution labor supply aggregate income and popular perceptions of the poor the model shows in particular how complementarities arise endogenously between individuals desired beliefs or ideological choices resulting in two equilibria a first american equilibrium is characterized by a high prevalence of just world beliefs among the population and relatively laissez faire policies the other european equilibrium is characterized by more pessimism about the role of effort in economic outcomes and a more extensive welfare state more generally the paper develops a theory of collective beliefs and motivated cognitions including those concerning money consumption and happiness as well as religion

social mobility and stability of democracy re evaluating de tocqueville an influential thesis often associated with de tocqueville views social mobility as a bulwark of democracy when members of a social group expect to join the ranks of other social groups in the near future they should have less reason to exclude these other groups from the political process in this article we investigate this hypothesis using a dynamic model of political economy as well as formalizing this argument our model demonstrates its limits elucidating a robust theoretical force making democracy less stable in societies with high social mobility when the median voter expects to move up respectively down she would prefer to give less voice to poorer respectively richer social groups our theoretical analysis shows that in the presence of social mobility the political preferences of an individual depend on the potentially conflicting preferences of her future selves and that the evolution of institutions is determined through the implicit interaction between occupants of the same social niche at different points in time

optimal sin taxes abstract we investigate sin taxes on unhealthy items such as fatty foods that people may by their own reckoning consume too much of we employ a standard optimal taxation framework but replace the standard assumption that all consumers have 100 self control with an assumption that some consumers may have some degree of self control problems we show that imposing taxes on unhealthy items and returning the proceeds to consumers can generally improve total social surplus because such taxes counteract over consumption by consumers with self control problems while at the same time they naturally redistribute income to consumers with no self control problems who consume less such taxes can even create pareto improvements finally we demonstrate with some simple numerical examples that even if the population exhibits relatively few self control problems optimal taxes can still be large

why a stubborn conservative would run a deficit policy with time inconsistent preferences a conservative government in favor of a low level of public consumption knows that it will be replaced by a government in favor of a larger level of public consumption we show that the resulting level of public consumption is in between the levels the two governments would choose if each were in power both in the present and in the future in particular we show that if the conservative government is more stubborn in a particular sense than the succeeding government the conservative government will borrow more than it would had it remained in power in the future

the demand for bad policy when voters underappreciate equilibrium effects most of the political economy literature blames inefficient policies on institutions or politicians motives to supply bad policy but voters may themselves be partially responsible by demanding bad policy in this article we posit that voters may systematically err when assessing potential changes in policy by underappreciating how new policies lead to new equilibrium behaviour this biases voters towards policy changes that create direct benefits welfare would rise if behaviour were held constant even if those reforms ultimately reduce welfare because people adjust behaviour conversely voters are biased against policies that impose direct costs even if they induce larger indirect benefits using a lab experiment we find that a majority of subjects vote against policies that while inflicting direct costs would help them to overcome social dilemmas and thereby increase welfare subjects also support policies that while producing direct benefits create social dilemmas and ultimately hurt welfare both mistakes arise because subjects fail to fully anticipate the equilibrium effects of new policies more precisely we establish that subjects systematically underappreciate the extent to which policy changes will affect the behaviour of other people and that these mistaken beliefs exert a causal effect on the demand for bad policy

a dynamic theory of public spending taxation and debt this paper presents a dynamic political economy theory of public spending taxation and debt policy choices are made by a legislature consisting of representatives elected by geographically defined districts the legislature can raise revenues via a distortionary income tax and by borrowing these revenues can be used tofinance a national public good and district specific transfers interpreted as pork barrel spending the value of the public good is stochastic reflecting shocks such as wars or natural disasters in equilibrium policy making cycles between two distinct regimes business as usual in which legislators bargain over the allocation of pork and responsible policy making in which policies maximize the collective good transitions between the two regimes are brought about by shocks in the value of the public good in the long run equilibrium tax rates are too high and too volatile public good provision is too low and debt levels are too high in some environments a balanced budget requirement can improve citizen welfare

negative voters electoral competition with loss aversion this paper studies how voter loss aversion affects electoral competition in a downsian setting assuming that the voters reference point is the status quo we show that loss aversion has a number of effects first for some values of the status quo there is policy rigidity both parties choose platforms equal to the status quo regardless of other parameters second there is a moderation effect when there is policy rigidity the equilibrium policy outcome is closer to the moderate voters ideal point than in the absence of loss aversion in a dynamic extension of the model we consider how parties strategically manipulate the status quo to their advantage and we find that this increases policy rigidity finally we show that with loss aversion incumbents adjust less than challengers to changes in voter preferences the underlying force is that the status quo works to the advantage of the incumbent this prediction of asymmetric adjustment is new and we test it using elections to us state legislatures the results are as predicted incumbent parties respond less to shocks in the preferences of the median voter

life insurance and life settlement markets with overconfident policyholders abstract we analyze how the life settlement market the secondary market for life insurance may affect consumer welfare in a dynamic equilibrium model of life insurance with one sided commitment and overconfident policyholders in our model policyholders may lapse their life insurance policies when they lose their bequest motives however they are overconfident in the sense that they may underestimate the probability of losing their bequest motives we show that in the competitive equilibrium without life settlement overconfident consumers will buy life insurance contracts with too much reclassification risk insurance for later periods the life settlement market can impose a limit on the extent to which primary insurers can exploit overconfident consumers we show that the life settlement market may increase the equilibrium consumer welfare of overconfident consumers when they are sufficiently vulnerable in the sense that they have a sufficiently large intertemporal elasticity of substitution of consumption our result is robust to alternative specifications where i insurers cannot observe the subjective or objective probability that policyholders will lose their bequest motives ii insurers can include health contingent cash surrender values csvs in the life insurance contract and iii policyholders underestimate their future mortality risk

equilibrium welfare and government policy with quasi geometric discounting abstract we consider a representative agent equilibrium model where the consumer has quasi geometric discounting and cannot commit to future actions we restrict attention to a parametric class for preferences and technology and solve for time consistent competitive equilibria globally and explicitly we then characterize the welfare properties of competitive equilibria and compare them to that of a planning problem the planner is a consumer representative who without commitment but in a time consistent way maximizes his or her present value utility subject to resource constraints the competitive equilibrium results in strictly higher welfare than the planning problem whenever the discounting is not geometric journal of economic literature classification numbers e21 e61 e91

numerical analysis of non constant pure rate of time preference a model of climate policy abstract when current decisions affect welfare in the far distant future as with climate change the use of a declining pure rate of time preference prtp provides potentially important modeling flexibility the difficulty of analyzing models with non constant prtp limits their application we describe and provide software available online to implement an algorithm to numerically obtain a markov perfect equilibrium for an optimal control problem with non constant prtp we apply this software to a simplified version of the numerical climate change model used in the stern review for our calibration the policy recommendations are less sensitive to the prtp than widely believed

overconfidence in political behavior this paper studies theoretically and empirically the role of overconfidence in political behavior our model of overconfidence in beliefs predicts that overconfidence leads to ideological extremeness increased voter turnout and stronger partisan identification the model also makes nuanced predictions about the patterns of ideology in society these predictions are tested using unique data that measure the overconfidence and standard political characteristics of a nationwide sample of over 3 000 adults our numerous predictions find strong support in these data in particular we document that overconfidence is a substantively and statistically important predictor of ideological extremeness voter turnout and partisan identification jel c83 d03 d72 d83

fiscal rules and discretion under persistent shocks this paper studies the optimal level of discretion in policymaking we consider a fiscal policy model where the government has time inconsistent preferences with a present bias toward public spending the government chooses a fiscal rule to trade off its desire to commit to not overspend against its desire to have flexibility to react to privately observed shocks to the value of spending we analyze the optimal fiscal rule when the shocks are persistent unlike under independent and identically distributed shocks we show that the ex ante optimal rule is not sequentially optimal as it provides dynamic incentives the ex ante optimal rule exhibits history dependence with high shocks leading to an erosion of future fiscal discipline compared to low shocks which lead to the reinstatement of discipline the implied policy distortions oscillate over time given a sequence of high shocks and can force the government to accumulate maximal debt and become immiserated in the long run

self control and the theory of consumption to study the behavior of agents who are susceptible to temptation in infinite horizon consumption problems under uncertainty we define and characterize dynamic self control dsc preferences dsc preferences are recursive and separable in economies with dsc agents equilibria exist but may be inefficient in such equilibria steady state consumption is independent of initial endowments and increases in self control increasing the preference for commitment while keeping self control constant increases the equity premium removing nonbinding constraints changes equilibrium allocations and prices debt contracts can be sustained even if the only feasible punishment for default is the termination of the contract

ramsey meets laibson in the neoclassical growth model the neoclassical growth model is modified to include a variable rate of time preference with no commitment ability and log utility the equilibrium features a constant effective rate of time preference and is observationally equivalent to the standard model the extended framework yields testable linkages between the extent of commitment ability and the rates of saving and growth the model also has welfare implications including the optimal design of institutions that facilitate household commitments steady state results are obtained for general concave utility functions and some properties of the transitional dynamics are characterized for isoelastic utility

voting on the budget deficit this paper analyzes a model in which a group of rational individuals votes over the composition and time profile of public spending all voters agree that a balanced budget is ex ante optimal however if there is disagreement between current and future majorities a balanced budget is not a political equilibrium under majority rule under certain conditions a majority of the voters favors a budget deficit and the equilibrium deficit is larger the greater is the polarization among voters copyright 1990 by american economic association

loss aversion in politics we study how loss aversion affects the political equilibrium in a simple majority voting model first we show a status quo bias which leads to path dependence second loss aversion implies a moderating effect on the most extreme voters third in a dynamic setting the effect of loss aversion diminishes with the length of the planning horizon of voters however in the presence of a projection bias majorities are partially unable to understand how fast they will adapt to a new policy this makes changes less likely and induces time inconsistency policy changes are timid at the beginning while in later periods they are made progressively more radical fourth in a stochastic environment loss aversion yields a significant distaste for risk but also a smaller attachment to the status quo the application of these results to a model of redistribution leads to empirically plausible implications

exploiting naivete about self control in the credit market we develop a model of the credit market where competitive lenders oer long term contracts specifying a non linear schedule of possible repayment schedules to borrowers who may dier both in their taste for immediate gratication and their prior beliefs about that taste the equilibrium contract to a borrower with given beliefs is discontinuous it features an advantageous option involving fast repayment and a penalty for deviating and repaying later these predictions seem to resemble some salient features of many credit card and mortgage contracts for fully sophisticated borrowers the discontinuity acts as a commitment device and yields fast repayment but all other borrowers even those with an arbitrarily small amount of naivete end up delaying repayment despite the penalty and receive little benet from commitment furthermore because they believe they will repay early they underestimate the cost of credit and hence borrow too much non sophisticated borrowers cross subsidize sophisticated borrowers while sophisticated borrowers discipline rms by preventing very exploitative contracts we identify natural conditions under which the above results obtain even if

voting as a lottery supermajorities have their advantage as well as their disadvantage they provide an hedge against being in the minority but they make being in the majority less likely we characterize this trade oand compute the most preferred majority threshold the relevant parameters are voting power risk aversion and pessimism people who feel powerful prefer low thresholds high thresholds are preferred by risk averters or by those who are pessimistic about being in the majority further we study constitutional agreements on the voting rule members of the constituent assembly are heterogeneous in the parameters above we show that weak and minority members succeed in pushing forward on high and protective rules

self control and bargaining abstract this paper examines a bargaining game with alternating proposals where sophisticated quasi hyperbolic discounters negotiate over an infinite stream of payoffs in markov perfect equilibrium payoffs are almost always unique and a small advantage in self control can result in a large advantage in payoff in subgame perfect equilibrium a multiplicity of payoffs and delay can arise despite the complete information setting markov perfect equilibria are the best subgame perfect equilibria for the agent with more self control and the worst for the agent with less self control naivete can help a player by increasing their reservation value

time perspective and climate change policy the tendency to foreshorten time units as we peer further into the future provides an explanation for hyperbolic discounting at an inter generational time scale we study implications of hyperbolic discounting for climate change policy when the probability of a climate induced catastrophe depends on the stock of greenhouse gasses we characterize the set of markov perfect equilibria mpe of the inter generational game amongst a succession of policymakers each policymaker reflects her generation s preferences including its hyperbolic discounting for a binary action game we compare the mpe set to a restricted commitment benchmark we compare the associated constant equivalent discount rates and the willingness to pay to control climate change with assumptions and recommendations in the stern review on climate change ymy picture of the world is drawn in perspectivey i apply my perspective not merely to space but also to time ramsey