consumption and debt response to unanticipated income shocks evidence from a natural experiment in singapore abstract this paper uses a unique panel dataset of consumer financial transactions to study how consumers respond to an exogenous unanticipated income shock consumption rose significantly after th

the consumption response to predictable changes in discretionary income evidence from the repayment of vehicle loans abstract although the life cycle permanent income hypothesis is the primary framework for understanding household consumption and savings decisions only a few studies have used clearly identifiable income changes to test the basic predictions of the model the estimates produced using this empirical strategy have yet to lead to a consensus of beliefs since the results have both favored and rejected the model this paper contributes to this literature by examining the consumption reaction to predictable increases in discretionary income following the final payment of a vehicle loan using data from the consumer expenditure survey the results show that a 10 increase in discretionary income due to a loan repayment leads to a 2 to 3 increase in nondurable consumption additional analysis suggests that these findings may be explained by the presence of borrowing constraints

are poor people credit constrained or myopic evidence from a south african panel credit constraints are an almost ubiquitous assumption in development economics yet direct evidence for credit constraints is limited and many observations consistent with credit constraints are equally compatible with myopic non forward looking consumption or precautionary saving using household panel data and a source of widely anticipated income in south africa this paper tests and rejects the standard consumption model with perfect capital markets then myopic consumption and precautionary saving are tested as alternative explanations for the observed jumps in expenditure the standard model with credit constraints cannot be rejected in favour of myopic consumption or precautionary saving

the short term mortality consequences of income receipt many studies find that households increase their co nsumption after the receipt of expected income payments a result inconsistent wit h the life cycle permanent income hypothesis consumption can increase adverse healt h events such as traffic accidents heart attacks and strokes in this pape r we examine the short term mortality consequences of income receipt we find that mortality increases following the arrival of monthly social security payments re gular wage payments for military personnel the 2001 tax rebates and alaska permane nt fund dividend payments the increase in short run mortality is large potential ly eliminating some of the protective benefits of additional income

consumer response to tax rebates many households received income tax rebates in 2001 of 300 or 600 these rebates represented advance payments of the tax cut from the new 10 percent tax bracket based on a survey of a representative sample of households this paper finds that only 22 percent of households receiving the rebate would spent it instead they would either save it or use it to pay off debt this very low rate of spending represents a striking break with past behavior which would have suggested a much higher rate of spending the low spending rate implies that the tax rebate provided a very limited stimulus to aggregate demand this abstract was borrowed from another version of this item

consumer response to the timing of income evidence from a change in tax withholding in 1992 the income tax withholding tables were adjusted so that withholding was reduced a typical worker received an extra 28 80 in take home pay per month in march through december 1992 to be offset by a lower tax refund in 1993 the change in withholding amounted to 0 5 percent of gdp president bush who proposed this change in his state of the union address intended that it provide a temporary stimulus to demand but the policy change involved only the timing of income so under the life cycle permanent income model it would be predicted to have a negligible effect on consumption and aggregate demand this paper reports consumers responses to the change in withholding the results are based on a survey taken shortly after it went into effect forty three percent of consumers report spending the extra take home pay substantially more than the zero percent predicted by the standard models but substantially less than the one hundred percent upon which the policy was predicated the decision to save the income is not explained by expected income growth therefore while behavior of many households is not fully consistent with the life cycle permanent income model liquidity constraints do not appear to account for this behavior this abstract was borrowed from another version of this item

household saving micro theories and micro facts in this survey we review the recent theoretical and empirical literature on household saving and consumption the discussion is structured around a list of motives for saving and how well the standard theory captures these motives we show that almost all of the motives for saving that have been suggested in the informal saving literature can be captured in the standard optimizing model particular attention is given to recent work on the precautionary motive and its implications for saving and consumption behavior we also discuss the behavioral or psychological approach that eschews the use of standard optimization techniques and focuses instead on direct consideration on saving we provide a section on facts who save and how much we then discuss informally the recent decline in the u s saving rate and whether the theory is of much use in understanding this and other changes in aggregate saving rates over time we do not find any convincing explanation for the change in saving rates we also discuss some analyses of saving behavior over the life cycle addressing such questions as whether households save enough for retirement and whether the consumption patterns of older households can be rationalized within a simple life cycle model we also review a great number of studies of the consumption euler equations based on our analysis of the studies cited we conclude that there is still mixed evidence that consumption is excessively sensitive to income we also examine in depth the recent empirical literature on the precautionary motive we conclude that although some households do seem to have a significant precautionary motive at some points in their life cycle this motive is not so strong empirically as some investigators suggest

consumer spending and the economic stimulus payments of 2008 abstract we measure the change in household spending caused by receipt of the economic stimulus payments of 2008 using questions added to the consumer expenditure survey and variation from the ran

transaction costs and consumption abstract the rational expectations permanent income hypothesis re pih fails to explain several well documented features of consumption behavior first the estimated marginal propensity to consume mpc for unanticipated transitory income shocks is often much higher than what the theory warrants second the estimated mpc is typically much bigger for small shocks of this type than for large shocks third consumption is often smoothed against large anticipated future income changes but not always against small changes this paper argues that these findings can be reconciled within a re pih model that includes a cash in advance constraint and an assumption that the agent is required to pay a fixed transaction cost to transfer wealth between cash and assets key results of the paper include first the agent follows an s s rule with respect to cash holdings when he makes wealth transfer decisions second the mpc within the no transfer band is higher than that out of the band and can be as high as exactly equal to one and third the agent smoothes consumption in response to news of large future income changes but not necessarily to small ones

family labor supply and the timing of cash transfers evidence from the earned income tax credit abstract this paper exploits the unique disbursement timing and benefit rules of the earned income tax credit eitc to provide new evidence on how families adjust their labor supply in response to receiving anticipated cash transfers i find that income seasonality caused by eitc receipt leads to changes in the intra year labor supply patterns of married women on average receiving a 1 000 payment significantly reduces the proportion of married women who work by 1 3 percentage points in the month when the eitc is received additionally this labor supply response is mainly driven by those who are secondary earners or liquidity constrained

the response of expenditures to anticipated income changes panel data estimates standard models of intertemporal allocation predict that the time path of expenditures should be independent of the time path of income recently two papers parker 1999 and souleles 1999 have suggested that u s households have a high marginal propensity to spend within year anticipated income changes we use an expenditure survey panel from spain to re examine this issue we exploit two important features of the spanish data first we have quarterly panel data that follows households for more than four quarters second we use the fact that workers are exogenously sorted into one of two payment schemes some receive the same amount each month of the year and others receive an extra payment in june and december the extra payment is large and predictable we examine the detailed pattern of expenditures over the year to see whether they differ between the two groups we fail to find even weak differences we complement this with a conventional euler equation analysis of excess sensitivity our predicting equation for quarterly earnings growth is much better than usual and is likely to give a powerful test of the hypothesis that predictable changes in income do not lead to changes in expenditure patterns the results of this analysis confirm the graphical analysis we find no evidence of excess sensitivity we conclude that households in normal times do smooth consumption over the year we suggest a reconciliation of our results with those of parker and souleles

were nineteenth century industrial workers permanent income savers theories of household saving posit that households add to or draw down wealth to equalize the discounted present value of consumption over time this article examines the extent to which 19th century urban american industrial workers saved and dissaved to smooth consumption in response to unanticipated plausibly exogenous shocks to income information on the expected and unexpected number of days unemployed is used to construct estimates of transitory income the data are then used to estimate the marginal propensity to save from transitory income the results are broadly consistent with friedman s 1957 permanent income hypothesis in that the marginal propensity to consume from transitory income is about twice that of nontransitory income

household expenditure and the income tax rebates of 2001 using questions expressly added to the consumer expenditure survey we estimate the change in consumption expenditures caused by the 2001 federal income tax rebates and test the permanent income hypothesis we exploit the unique randomized timing of rebate receipt across households households spent 20 to 40 percent of their rebates on nondurable goods during the three month period in which their rebates arrived and roughly two thirds of their rebates cumulatively during this period and the subsequent three month period the implied effects on aggregate consumption demand are substantial consistent with liquidity constraints responses are larger for households with low liquid wealth or low income

algorithms for asset replacement under limited technological forecast abstract the optimal asset replacement is analyzed when the future course of technological change is known on a limited future horizon comparison of factual and desired properties of known replacement methods leads us to the idea of how to improve their efficiency under changing technology reflected in decreasing operating and new asset costs we introduce new modifications of the economic life and two cycle variable horizon methods by correcting their capital recovery factor next we demonstrate that the modified methods deliver solutions equal or close to the infinite horizon replacement under technological change

the ivory trade ban is it effective abstract this paper examines the effectiveness of the ivory trade ban when producer and consumer states have different incentives to comply with such a ban the paper distinguishes between two types of producer states those with stable elephant population and those with declining elephant population we compare the independent enforcement level of each of these producer states and a consumer state and show the suboptimality of these levels compared to optimal enforcement level that would result from a cooperative effort the costliness and imperfectness of enforcing constraints on the private taking of elephants creates intergovernmental externalities thus in the absence of binding international law regulation would have to be supplemented with incentives

sustainable management of renewable resources an experimental investigation in continuous time abstractthis study addresses one of the most basic questions in renewable resource management the ability of economic agents to exploit a renewable resource in an efficient and sustainable manner in a laboratory experiment subjects are presented with renewable resource extraction problems where optimal management will lead to a stable steady state a test of sustainability of the extraction practices shows that extraction behaviour results in steady states only 56 of the time the mode of the steady state distribution coincides with the optimal steady state extraction the trade off between accruing a higher payoff in the present and sustaining the resource for future exploitation leads to suboptimal behaviours such as initial overextraction of the resource compared to the optimal extraction policy costly downward adjustment of the extraction later in time and settling down for lower long run resource and extraction the suboptimal behaviours lead to 17 loss in efficiency on average in terms of th

is there a retirement savings puzzle in this paper we ask whether households are saving enough for their retirement we use data on income expenditure and expenditure components to analyse patterns of behaviour at and around the time of retirement for successive date of birth cohorts we compare periods of unemployment to periods of retirement and separate expenditures into categories reflecting work related expenditures basic necessities and other goods we find that income typically falls by more at unemployment than retirement but the reverse is true for expenditure we observe falls in expenditure at retirement for all expenditure categories using a stochastic life cycle model including mortality rates we assess the anticipated impact of retirement on consumption against that of unemployment the inter relationship between goods and leisure explains a large part of the persistent fall in expenditure at retirement we argue that the only way in which the life cycle hypothesis could be reconciled with the remaining unanticipated dip in consumption would be with the systematic arrival of unexpected adverse information at the time of retirement

homeowner borrowing and housing collateral new evidence from expiring price controls i empirically analyze how changes to the collateral value of real estate assets affect homeowner borrowing behavior while previous research has documented a positive relationship between house prices and home equity based borrowing a key empirical challenge has been to disentangle the role of collateral constraints from that of wealth effects in generating this relationship to isolate the role of collateral constraints i exploit the expiration of resale price controls on owner occupied housing units created through an inclusionary zoning regulation in montgomery county maryland because the duration and stringency of the price controls are set by formula and known in advance their expiration has no effect on expected lifetime wealth but directly shocks collateralized borrowing capacity using data on all transactions and loans secured against every property in the county from 1997 2012 i estimate that the marginal propensity to borrow out of increases in housing collateral induced by expiring price controls is between 0 04 and 0 13 the magnitude of this effect is correlated with a homeowner s initial leverage and indicates that a significant fraction of the additional borrowing arising from house price increases is due to relaxing collateral constraints additional analysis of residential investment and ex post loan performance further suggests that borrowers used at least some portion of the extracted funds to finance current consumption and investment expenditures these results highlight the importance of collateral constraints for homeowner borrowing and suggest a potentially important role for house price growth in driving aggregate consumption

habits and heterogeneity in demands a panel data analysis we examine demand behaviour for intertemporal dependencies using spanishpanel data we present evidence that there is both state dependence and correlatedheterogeneity in demand behaviour our specific findings are that food outside thehome alcohol and tobacco are habit forming whereas clothing and small durablesexhibit durability we conclude that demand analyses using cross section data thatignore these effects may be seriously biased on the other hand the degree ofintertemporal dependence is not sufficiently strong to make composite consumption significantly habit forming as has been suggested in some recent analyses

the reaction of household consumption to predictable changes in social security taxes the key implication of rational expectations and the basic life cycle permanent income hypothesis that predictable changes in income have no effect on the growth rate of consumption expenditures is examined this implication is important for understanding the effectiveness and optimal timing of fiscal policy the causes and propagation of business cycles and the effects of income fluctuations on the growth rate of the economy using household level consumption data from the consumer expenditure survey whether expenditures on nondurable goods increase contemporaneously with predictable changes in social security tax withholding is tested it is found that households do change their consumption expenditures in response to the predictable fluctuations in income induced by the social security tax system

consumption and income seasonality in thailand many households in developing countries rely on seasonal agriculture for their incomes this paper investigates whether household consumption expenditure tracks income across seasons using data from thailand i contrast the seasonal consumption patterns of households with different seasonal income patterns and estimate the responsiveness of seasonal consumption to seasonal income i find little evidence that consumption tracks income over the course of the year the findings suggest that observed seasonal consumption patterns are the result of seasonal variations in preferences or prices common to all households rather than an inability of households to use savings behavior to smooth consumption

i ll never forget my first cigarette a revealed preference analysis of the habits as durables model we provide a revealed preference analysis of the habits as durables model this approach avoids the need to impose a functional form on the underlying utility function we show that our characterization is testable by means of linear programming methods and we demonstrate its practical usefulness by means of an application to cigarette consumption using a spanish household consumption data set we find that the habits as durables model has better empirical fit in terms of predictive success compared to the short memory habits and life cycle models

do homeowners increase consumption after the last mortgage payment an alternative test of the permanent income hypothesis the maturity date of a mortgage loan marks the end of monthly mortgage payments for homeowners in the period after the last payment homeowners experience an increase in their disposable income our study interprets this event as an anticipated increase in income and tests whether households smooth consumption over the transition period as predicted by the rational expectation life cycle permanent income hypothesis we find households do not alter nondurable goods consumption in the period following the last mortgage payment instead they increase both financial savings and savings in durable goods such as house furnishings and entertainment equipment in the year of the last mortgage payment

a theory of the consumption function with and without liquidity constraints fifteen years ago milton friedman s 1957 treatise a theory of the consumption function seemed badly dated dynamic optimization theory had not been employed much in economics when friedman wrote and utility theory was still comparatively primitive so his statement of the permanent income hypothesis never actually specified a formal mathematical model of behavior derived explicitly from utility maximization instead friedman relied at crucial points on intuition and verbal descriptions of behavior although these descriptions sounded plausible when other economists subsequently found multiperiod maximizing models that could be solved explicitly the implications of those models differed sharply from friedman s intuitive description of his model furthermore empirical tests in the 1970s and 1980s often rejected these rigorous versions of the permanent income hypothesis in favor of an alternative hypothesis that many households simply spent all of their current income today with the benefit of a further round of mathematical and computational advances friedman s 1957 original analysis looks more prescient than primitive it turns out that when there is meaningful uncertainty in future labor income the optimal behavior of moderately impatient consumers is much better described by friedman s original statement of the permanent income hypothesis than by the later explicit maximizing versions furthermore in a remarkable irony much of the empirical evidence that rejected the permanent income hypothesis as specified in tests of the 1970s and 1980s is actually consistent both with friedman s original description of the model and with the new version with serious uncertainty there are four key differences between the explicit maximizing models

do consumers react to anticipated income changes evidence from the alaska permanent fund a central implication of the life cycle permanentincome hypothesis lc pih is that consumers should not respond to predictable changes in their income to test this hypothesis a number of recent papers have exploited natural experiments to identify anticipated income changes in particular recent work by parker 1999 uses the change in after tax income due to the cap on earnings subject to the social security tax and a related paper by souleles 1999 examines the response of consumption to income tax refunds surprisingly parker and souleles find that even when income is expected to change within the year expenditure is excessively sensitive to the timing of the income change while their results can be interpreted as evidence that our canonical model of consumption is inadequate an alternative explanation is that the anticipated income changes they exploit are small and irregular and that households will not bother to change their consumption paths when the computational costs involved are large relative to the utility gains in support of this interpretation browning and collado 2001 find that the seasonal consumption patterns of spanish households that work in sectors that provide regular bonus payments do not differ from those of households that do not receive bonus payments this paper adds to this evidence by exploiting a natural experiment provided by annual payments from the state of alaska s permanent fund to every resident in the state of alaska that should yield an unusually powerful test of the lc pih these payments are large and clearly anticipated by alaskan residents using the variation in the size of the payments over time and in the amount received by families of different sizes to identify the response of consumption to payments from the permanent fund i find no evidence that the consumption of alaskan households reacts to these payments in addition i find no evidence that the seasonal pattern of consumption in alaska differs from that in the other 49 states or that households in alaska are subject to fewer liquidity constraints engage in less buffer stock saving or spend a smaller fraction of their income on semidurable goods than households in the rest of the united states however although households in alaska do not overreact to payments from the permanent fund i find that the consumption of the very same households is excessively sensitive to their income tax refunds this evidence suggest that households will take anticipated income changes into account in their consumption decisions when the income changes are large regular and easy to predict but will not do so when they are small and irregular the paper proceeds as follows the next section of the paper presents details on the department of economics princeton university princeton nj 08544 and national bureau of economic research e mail chsieh princeton edu i am very grateful to the bureau of labor statistics bls for providing access to the data from the consumer expenditure survey and to its staff particularly steven henderson walter vandeheide and wolf weber for their generous assistance during my visits to the bls i also thank nanci jones for providing data and patiently answering questions on the operation of the alaska permanent fund anne case angus deaton jonathan parker and two referees provided useful comments the views expressed in this paper are personal and should not be attributed to the bls 1 i refer to the certainty equivalent version of the lc pih or one in which the expected variance of consumption is constant as is well known without these assumptions the lc pih only implies smoothing of marginal utility not necessarily of consumption 2 see christina h paxson 1992 john shea 1995 jonathan a parker 1999 nicholas s souleles 1999 martin browning and m dolores collado 2001 also see ronald a bodkin 1959 for an early example of the use of a natural experiment to test for excess sensitivity for comprehensive reviews of the large literature on empirical tests of the lc pih see angus deaton 1992 browning and annamaria lusardi 1996 and browning and thomas f crossley 2001 3 in 1998 for example the permanent fund paid 1 541 to every resident of the state of alaska

in the mood to consume effect of sunshine on credit card spending abstract using a large representative sample of high frequency credit card transactions in the united states this paper examines the causal effect of sunshine induced mood on contemporaneous household credit card spending we document a 0 3 percent increase in credit card spending in response to a one unit increase in the same day local abnormal sunshine the spending response is stronger for consumers with higher credit card debt lower fico score and shorter tenure with the bank the effect manifests in long term durable goods spending and is not driven by other weather conditions complementarity between sunshine and consumption or intentional choice of consumption time we document similar responses of spending on seasonal and non seasonal goods and during times with high and low sunshine levels finally the sunshine effect occurs among consumers with various characteristics

union contracts and the life cycle permanent income hypothesis this paper isolates households in the psid whose heads can be matched to particular long term union contracts with high confidence the author uses use published information on these contracts to construct a household specific measure of expected wage growth he finds that predictable wage movements are significantly correlated with consumption changes contrary to neoclassical consumption theory the author finds that consumption responds more strongly to predictable income declines than to predictable income increases this asymmetry is inconsistent with liquidity constraints and myopia but is qualitatively consistent with models in which preferences exhibit loss aversion copyright 1995 by american economic association

excess sensitivity of high income consumers using new transaction data i find considerable deviations from consumption smoothing in response to large regular predetermined and salient payments from the alaska permanent fund on average the marginal propensity to consume mpc is 25 for nondurables and services within one quarter of the payments the mpc is heterogeneous monotonically increasing with income and the average is largely driven by high income households with substantial amounts of liquid assets who have mpcs above 50 the account level data and the properties of the payments rule out most previous explanations of excess sensitivity including buffer stock models and rational inattention how big are these mistakes using a sufficient statistics approach i show that the welfare loss from excess sensitivity depends on the mpc and the relative payment size as a fraction of income since the lump sum payments do not depend on income the two statistics are negatively correlated such that the welfare losses are similar across households and small less than 0 1 of wealth despite the large mpcs

the optimal economic lifetime of vintage capital in the presence of operating costs technological progress and learning abstract this paper studies the optimal vintage specific investment and disinvestment decision of a firm the decision is formulated as a distributed optimal control problem with a constraint on the state variable the economic model takes into accounts maintenance and operating costs technological progress and learning it allows firms to purchase not only the latest technology but also previous year vintages and completely disinvest old machines it does not assume that the firms keep machines of all vintages as other similar models do an analytical expression for the optimal economic lifetime of capital is derived and the qualitative dynamics of the optimal investment and disinvestment rules is analyzed

the reaction of consumer spending and debt to tax rebates evidence from consumer credit data we use a new panel data set of credit card accounts to analyze how consumers responded to the 2001 federal income tax rebates we estimate the monthly response of credit card payments spending and debt exploiting the unique randomized timing of the rebate disbursement we find that on average consumers initially saved some of the rebate by increasing their credit card payments and thereby paying down debt but soon afterward their spending increased counter to the permanent income model spending rose most for consumers who were initially most likely to be liquidity constrained whereas debt declined most so saving rose most for unconstrained consumers

are consumers forward looking evidence from fiscal experiments how changes in current and future income affect consumer spending is a perennial question in macroeconomics and public finance theoretical constructs such as the permanent income hypothesis are of limited assistance in resolving this issue because they neglect borrowing constraints and other market imperfections that can significantly affect the marginal propensity to spend out of current income recent empirical work has also proven inconclusive since whether consumption responds to income fluctuations by more or less than the permanent income hypothesis predicts turns critically upon whether disposable income follows a random walk or is stationary around a longrun trend see john campbell and angus deaton 1987 this controversy is unlikely to be resolved conclusively because it is notoriously difficult to distinguish a stationary but highly persistent time series from one that is nonstationary these difficulties suggest the importance of searching for natural experiments income shocks with predictable and well understood effects on future income to test models of consumer behavior changes in federal tax and transfer policy during the last two decades provide several episodes of this type analyzing the effects of these tax changes is also central to understanding the role of fiscal policy in affecting national saving this paper examines two aspects of consumer response to tax changes section i argues that consumption responds to temporary income tax shocks by more than the permanent income hypothesis would suggest results from the 1975 tax rebate in particular suggest that a 1 increase in transitory income raises spending by about 20 cents section ii examines consumption responses to tax announcements although the results are not conclusive they suggest that some consumers do not adjust consumption in anticipation of tax changes the final section sketches some implications for analyzing fiscal policy

economic life replacement under improving technology abstract the economic life el method of asset replacement is analyzed under improving technology that impacts the maintenance cost new asset cost and salvage value in particular we prove that the asset el is constant when all these costs decrease with the same rate if these costs decrease geometrically then the el method with a corrected capital recovery factor calculates the optimal asset lifetime over the infinite horizon for arbitrary age dependent deterioration and salvage value in a general case the el method delivers an optimal replacement decision when the relative rate of technological change is less than 1 for larger rates we recommend to minimize the annual cost over two future replacement cycles which was earlier proposed and implemented by christer and scarf journal of the operational research society 45 1994

consumption smoothing after the final mortgage payment testing the magnitude hypothesis we examine whether the magnitude of an anticipated income change affects consumption smoothing the magnitude hypothesis although this hypothesis has been discussed for fifty years we are one of the first to provide formal statistical evidence to support it we consider the natural experiment of an individual s final mortgage payment an anticipated income change and examine how it affects credit card expenditure we can identify causality because the dates of final mortgage payments across individuals are uncorrelated with unobserved determinants of consumption using an event study methodology we provide evidence to support the magnitude hypothesis

finite project life and uncertainty effects on investment abstract this paper revisits the important result of the real options approach to investment under uncertainty which states that increased uncertainty raises the value of waiting and thus decelerates investment typically in this literature projects are assumed to be perpetual however in today s economy firms face a fast changing technology environment implying that investment projects are usually considered to have a finite life the present paper studies investment projects with finite project life and we find that in contrast with the existing theory investments may be accelerated by increased uncertainty it is shown that this particularly happens at low levels of uncertainty and when project life is short

the intrinsic fallacy of market mechanism and private property rights in alleviating the tragedy of the commons economists solution to the tragedy of the commons relies on well defined property rights and competitive market mechanism for limiting individuals self serving short sighted actions that result

consumption and habits evidence from panel data the purpose of this paper is to test for the presence of habit formation in consumption decisions using household panel data we use the test proposed by meghir and weber 1996 and estimate the within period marginal rate of substitution between commodities which is robust to the presence of liquidity constraints to that end we use a spanish panel data set in which households are observed up to eight consecutive quarters this temporal dimension is crucial since it allows us to take into account time invariant unobserved heterogeneity across households fixed effects and therefore to investigate if the relationship between current and past consumption reflects habits or heterogeneity our results confirm the importance of accounting for fixed effects when analyzing intertemporal consumption decisions allowing for time non separabilities once fixed effects are controlled for and a proper set of instruments is used the results yield supporting evidence of habit formation in the demand system of food at home transport and services

the dynamics of general equilibrium in walras original description of general equilibrium walras 1954 1874 market clearing was effected by a central authority this authority which has come to be known as the auctioneer remains today because no one has succeeded in producing a plausible decentralised dynamic model of producers and consumers engaged in market interaction in which prices and quantities move towards market clearing levels only under implausible assumptions can the continuous auctioneer dynamic be shown to be stable fisher 1983 and in a discrete model even these assumptions gross substitutability for instance do not preclude instability and chaos in price movements saari 1985 bala and majumdar 1992 1 moreover contemporary analysis of excess demand functions suggests that restrictions on preferences are unlikely to entail the stability of t sonnenschein 1972 1973 debreu 1974 kirman and koch 1986 it has been a half century since debreu 1952 and arrow and debreu 1954 provided a satisfactory analysis of the equilibrium properties market economies yet we know virtually nothing systematic about walrasian dynamics this suggests that we lack understanding of one or more fundamental properties of market exchange this article provides an agent based model of the walrasian economy an agentbased model is a computer simulation of the repeated play of a game in which a large number of agents are endowed with software encoded strategies governing both how they play the game and how they gather information and update their behaviour the disequilibrium behaviour of agents in our agent based models is governed by a replicator dynamic taylor and jonker 1978 in which over time successful agents tend in darwinian fashion to increase in frequency at the expense of unsuccessful agents we describe the process of shifting from lower to higher payoff strategies as imitation

myopia liquidity constraints and aggregate consumption a simple test this note conducts a simple test for myopia and liquidity constraints in aggregate u s consumption the test exploits the fact that under myopia consumption should be equally sensitive to predictable income declines and increases while under liquidity constraints consumption should be more sensitive to predictable income increases than to declines using quarterly postwar data the author shows that aggregate consumption is in fact more sensitive to predictable income declines than increases this perverse asymmetry is inconsistent with both myopia and liquidity constraints but is qualitatively consistent with recent theoretical work incorporating loss aversion into intertemporal preferences

repeated real options optimal investment behaviour and a good rule of thumb abstract this paper extends the standard investment under uncertainty set up with a single investment option to the case of infinitely repeated options analytical solutions are derived and it is shown that repeated options not only imply a smaller value of waiting than in the case of a single option but also that the optimal stopping rule is affected differently by changes in underlying parameters this is shown to allow for the use of a simple hurdle rate rule as a good and robust approximation to optimal behaviour when investment options are repeated something which is unlikely in the single option case

crisis and consumption smoothing the dramatic impact of the current crisis on performance of businesses across sectors and economies has been headlining the business press for the past several months extant reconciliations of these patterns in the popular press rely on ad hoc reasoning using historical data on currency crisis episodes across the world we show that the impact of the crisis on a firm s business is best understood by focusing on the impact of the crisis on the behavior of consumers our analyses show that consumer behavior in a crisis is characterized by consumption smoothing at various levels intertemporal intercategory and intracategory these behavioral adjustments result in significant reallocation of consumption expenditures more importantly the smoothing decisions because of a crisis are distinct and independent of the impact of changes in income and prices that accompany a crisis interestingly there is marked variation in the patterns of consumption smoothing across different types of economies taken together these results have important and interesting implications for managers policy makers and academics

wealth shocks unemployment shocks and consumption in the wake of the great recession we use data from the 2009 internet survey of the health and retirement study to examine the consumption impact of wealth shocks and unemployment during the great recession in the us we find that many households experienced large capital losses in housing and in their financial portfolios and that a non trivial fraction of respondents have lost their job as a consequence of these shocks many households reduced substantially their expenditures we estimate that the marginal propensities to consume with respect to housing and financial wealth are 1 and 3 3 percentage points respectively in addition those who became unemployed reduced spending by 10 percent we also distinguish the effect of perceived transitory and permanent wealth shocks splitting the sample between households who think that the stock market is likely to recover in a year s time and those who don t in line with the predictions of standard models of intertemporal choice we find that the latter group adjusted much more than the former its spending in response to financial wealth shocks

consumption commitments and habit formation we analyze the implications of household level adjustment costs for the dynamics of aggregate consumption we show that an economy in which agents have consumption commitments is approximately equivalent to a habit formation model in which the habit stock is a weighted average of past consumption if idiosyncratic risk is large relative to aggregate risk consumption commitments can thus explain the empirical regularity that consumption is excessively sensitive and excessively smooth findings that are typically attributed to habit formation unlike habit formation and other theories but consistent with empirical evidence the consumption commitments model also predicts that excess sensitivity and smoothness vanish for large shocks these results suggest that behavior previously attributed to habit formation may be better explained by adjustment costs we develop additional testable predictions to further distinguish the commitment and habit models and show that the two models have different welfare implications

social security benefits consumption expenditure and the life cycle hypothesis this paper examines the impact of changes in social security benefits on aggregate consumption expenditure under the null hypothesis there should be no contemporaneous effect at the monthly frequency because increases in benefits have always been announced at least 6 weeks prior to payment the paper develops overwhelming evidence contrary to the null that benefits have affected aggregate spending the results have strong implications for several important issues including ricardian equivalence government policy irrelevance and the excess sensitivity of consumption to changes in income

did japan s shopping coupon program increase spending abstract in march 1999 31 million shopping coupons worth 20 000 yen each were distributed to japanese families with children and to the elderly the coupons expired after six months and could only be used within the recipient s local community we use variation in the number of children across families and in the number of recipients across prefectures to measure the effect of the coupons on spending we find that coupons had a positive effect on spending on semi durables but no effect on spending on nondurables or services the marginal propensity to consume on semi durables was 0 1 0 2 when the coupons were distributed in march the results using regional variation provide stronger evidence that spending did not fall after the coupons had been redeemed

paycheque receipt and the timing of consumption this article examines the consumption response to monthly paycheque receipt since the amount and arrival date of paycheques are known in advance the receipt of a paycheque does not coincide with the receipt of new information under the basic rational expectations life cycle permanent income hypothesis household consumption should not respond to paycheque arrival using data from the uk s family expenditure survey this article finds that household consumption is excessively sensitive to paycheque receipt the results cannot be explained by any underlying monthly expenditure fluctuations common to all households the presence of liquidity constraints as measured by wealth and age can account for the excess sensitivity results

the sensitivity of consumption to transitory income estimates from panel data on households we investigate the stochastic relation between income and consumption specifically consumption of food within a panel of about 2 000 households our major findings are 1 consumption responds much more strongly to permanent than to transitory movements of income 2 the response to transitory income is nonetheless clearly positive 3 a simple test independent of our model of consumption rejects a central implication of the pure life cycle permanent income hypothesis the observed covariation of income and consumption is compatible with pure life cycle permanent income behavior on the part of80 percent of families and simple proportionality of consumption and income among the remaining 20 percent as a general matter our findings support the view that families respond differently to different sources of income variations in particular temporary income tax policies have smaller effects on consumption than do other more permanent changes in income of the same magnitude this abstract was borrowed from another version of this item

the effects of government transfers on monthly cycles in drug abuse hospitalization and mortality this paper analyzes the monthly patterns of adverse outcomes due to the consumption of illegal drugs by recipients of government transfer payments we find evidence that certain subpopulations on government cash aid significantly increase their consumption of drugs when their checks arrive at the beginning of the month and as a result experience adverse events including hospitalization and death using data from california we find that the overall rate of drug related hospital admissions increases abruptly at the beginning of the month with admissions increasing 23 during the first five days of the month we find that this cycle is driven largely by recipients of supplemental security income ssi ssi recipients also experience an abrupt 22 increase in within hospital mortality after receiving their checks these findings suggest that full wallets adversely affect some aid recipients and that policymakers should explore alternate disbursement regimes such as a staggered disbursement schedule or in kind support that have the potential to reduce the rate of adverse events

the life cycle model of consumption and saving a central implication of life cycle models is that agents smooth consumption we review the empirical evidence on smoothing at frequencies from within the year up to across a lifetime we find that life cycle models particular those which incorporate realistic features of markets and goods have more empirical successes than failures we also show that some apparent deviations from theoretical predictions imply very small welfare losses for agents finally we emphasize that the coherence of life cycle models imposes an important discipline when incorporating new features into models

the spending and debt response to minimum wage hikes abstract immediately following a minimum wage hike household income rises on average by about 250 per quarter and spending by roughly 700 per quarter for households with minimum wage workers most of the spending response is caused by a small number of households who purchase vehicles furthermore we find that the high spending levels are financed through increases in collateralized debt our results are consistent with a model where households can borrow against durables and face costs of adjusting their durables stock jel d12 d14 d91 j38

winners and losers from an announced durable tax hike tesla in denmark we study the consumer response and tax revenue implications of the early announcement of a durable good tax in 2015 the danish government announced a tax hike on electric vehicles several months

further evidence of excess sensitivity of consumption nonseparability among goods and heterogeneity across households the standard theoretical framework for analysing households intertemporal decisions is the life cycle permanent income model among its implications testing the model allows to analyse the response of consumption to fiscal policy however the empirical literature with microdata has yielded mixed results this article examines the sensitivity of the results to the assumption of separability among goods and of homogeneity across households for that purpose we test a rational expectations permanent income model with household data drawn from the spanish family expenditure survey this survey contains detailed information on total expenditure and the income presents large exogenous quarterly changes due to an institutional feature the article shows that assuming separability among commodities biases the test against the model when separability is not imposed we show that the rejection of the model depends on heterogeneity across households in terms of their members being unemployed or not for those

a simple test of friedman s permanent income hypothesis friedman s permanent income hypothesis pih predicts that the income elasticity of consumption should be higher for households for which a large fraction of the variation of their income is permanent than for households facing more transitory variations in income we test this prediction using modern household data from the us consumer expenditure survey the results offer some support for the pih

homothetic efficiency theory and applications we provide a nonparametric revealed preference approach to demand analysis based on homothetic efficiency homotheticity is widely assumed often implicitly because it is a convenient and often useful restriction however this assumption is rarely tested and data rarely satisfy testable conditions to overcome this we provide a way to estimate homothetic efficiency of consumption choices the method provides considerably higher discriminatory power against random behavior than the commonly used afriat efficiency we use experimental and household survey data to illustrate how our approach is useful for different empirical applications and can provide greater predictive success

permanent income current income and consumption evidence from two panel data sets in this article i estimate euler equations that is the first order conditions of the consumers maximization problem using data from two data sets consumption data are taken from the consumer expenditure survey income data are taken from the panel study of income dynamics because the data for the estimation come from two samples i use a generalization of the instrumental variables estimator the two sample instrumental variables estimator i find evidence that consumption is excessively sensitive to predictable income growth the estimates of the coefficient of excess sensitivity for three consumption measures range from 2 to 5

time to cook expenditure at retirement in spain detailed panel expenditure data from spain reveal little evidence of a retirement consumption puzzle in 1985 2004 there is a drop in food at home expenditure in the later years of the sample along with evidence of households paying lower prices for the food they purchase after retirement however our findings are consistent with a model that allows for home production as long as one accounts for the greater participation in housework by men after retirement coinciding with this latter period our work adds to the evidence from several countries and helps in reconciling the retirement consumption puzzle with life cycle models

the response of household consumption to income tax refunds a central implication of the life cycle or permanent income theory is that consumption should not respond to predictable fluctuations in income tests of this implication have yielded mixed results especially on micro data angus deaton 1992 martin browning and annamaria lusardi 1996 in large part this might be due to the difficulties of isolating the predictable component of income at the micro level most tests proceed by instrumenting for income but since the available instruments are typically poor such tests might be prejudiced against finding significant excess sensitivity of consumption to income john shea 1995 also it is not clear how closely the resulting econometric predictions of income coincide with agents actual expectations of income to avoid these difficulties this paper examines the response of household consumption to a particular type of income that is both predictable and transitory income tax refunds since a refund depends on events in the previous calendar year it is predictable income as regards consumption in the year of its receipt consequently under the life cycle theory consumption should not increase on receipt of a refund 2 in addition to testing the canonical model of consumption this paper provides estimates interpretable as the marginal propensity to consume mpc out of refunds since federal tax refunds now amount to over 80 billion per year averaging well over 1 000 per refund these estimates are of interest in themselves more generally they bear on the impact of even preannounced and temporary changes in fiscal policy the paper begins by surveying related studies in section i section ii describes the data the consumer expenditure survey cex which of the leading u s micro data sets has the most comprehensive coverage of expenditure the empirical specification is set out in section hi section iv reports the results and section v concludes

operational asset replacement strategy a real options approach abstract this paper analyses the problem of replacement by investigating the optimal moment of investment replacement in a given tax environment with a given depreciation policy an operation and maintenance cost minimization model based on the definition of equivalent annual cost is applied to a real options paradigm the developed methodology allows for an innovative evaluation of the flexibility of replacement process analysis a new two factor evaluation function is introduced to quantify decisions on asset replacement under a unique cycle environment this study improves upon previous findings in the literature as it accounts for autonomous salvage value processes based on partial differential equations this model achieves a general analytical solution and particular numerical solution the results differ significantly from those observed in one factor models by showing evidence of over evaluation in optimal levels of replacement and by confirming suspicions that different types of uncertainties produce non monotonous effects on the optimal replacement level the scientific contribution of this study lies in new and stronger approaches to equivalent annual cost literature supplying an algorithm for operation and maintenance cost minimization that is conditioned by autonomous salvage value this study also contributes to the real options literature by developing a two factor model with brownian processes applied to asset replacement

investment under uncertainty the case of replacement investment decisions we analyze the determinants of replacement investment decisions in a contingent claims model with maintenance and operation cost uncertainty we find that the optimal time between replacements is increasing in the volatility of cost the purchase price of a new asset and the corporate tax rate and is decreasing in the systematic risk of cost the salvage value of the asset and the investment tax credit the optimal time between replacements can either increase or decrease with an increase in the depreciation rate extensions of the model to examine the effects of technological and tax policy uncertainty on replacement investment decisions give intuitive but striking results uncertainty about the arrival of a technological innovation that would decrease maintenance and operation cost results in a significant decrease in replacement investment uncertainty in a tax law change that would encourage investment decreases current investment and uncertainty in a tax law change that would discourage investment increases current investment

machine replacement under evolving deterministic and stochastic costs the infinite horizon cost minimization and the real option stopping problem are used to analyze serial replacement of a single asset under improving technology it is shown that both techniques produce the same equal life replacement policy when exponential technological improvements affect the operating cost and new asset cost in the same way next this result is extended to the stopping problem under evolving stochastic costs under general improving technology the expected asset lifetimes appear to be different for sequential replacement cycles and depend on the future cost evolution numeric experiments are provided and managerial implications of the obtained outcomes are discussed

measuring corruption in china an expenditure based approach using household survey data most existing micro level empirical analyses of corruption rely on administrative records special purpose surveys or field experiments which can be difficult or very costly to obtain in some situations in this paper we apply an expenditure based method of quantifying the extent of corruption in a particular country using household survey data this method utilizes discrepancies between consumption and reported income to measure corruption another contribution of this paper is that it provides the first objective estimate of the extent of corruption in china we use a quadratic clothing expenditure function to estimate the extent of corruption in china in 2002

capital renewal as a real option we consider the timing of replacement of obsolete subsystems within an extensive complex infrastructure such replacement action known as capital renewal must balance uncertainty about future profitability against uncertainty about future renewal costs treating renewal investments as real options we derive an optimal solution to the infinite horizon version of this problem and determine the total present value of an institution s capital renewal options we investigate the sensitivity of the infinite horizon solution to variations in key problem parameters and highlight the system scenarios in which timely renewal activity is most profitable for finite horizon renewal planning we show that our solution performs better than a policy of constant periodic renewals if more than two renewal cycles are completed

anticipation of future consumption a monetary perspective we adapt the monetary model sidrauski 1967 to study the hypothesis of anticipation of future consumption we assume that anticipation of future consumption affects an agent s instantaneous utility and that all effects of future consumption on current well being are captured by the stock of future consumption monetary policy effectiveness is thereby reduced and a zero nominal lower interest rate and thus the friedman rule is destabilizing given this we can derive a just stable equilibrium nominal interest rate with matching definitions for inflation and monetary growth we demonstrate that these implied lower bounds match their historical analogues well

does consumption respond to predicted increases in cash hand availability evidence from the italian severance pay abstract we examine whether italian household consumption exhibits excess sensitivity to severance pay a sizable lump sum that workers receive at job termination we find no evidence of excess sensitivity of non durable expenditure to this anticipated cash in hand change

the sensitivity of tests of the intertemporal allocation of consumption to near rational alternatives suppose a consumer sets consumption equal to income each period rather than following the optimal permanent income decision rule how much utility does he lose this paper finds that the answer is typically less than 10 cents 1 per quarter in environments specified by popular tests on aggregate data it includes calculations of the costs of excess sensitivity and excess smoothness to income and interest rate changes and the costs of ignoring information it concludes that the theory does not make predictions for aggregate tests that are robust to small costs such as information or transactions copyright 1989 by american economic association

consume now or later time inconsistency collective choice and revealed preference this paper develops a revealed preference methodology for exploring whether time inconsistencies in household choice are the product of nonstationarities at the individual level or the result of individual heterogeneity and renegotiation within the collective unit an empirical application to household level microdata highlights that an explicit recognition of the collective nature of choice allows the vast majority of household behaviour to be rationalised by theory that assumes preference stationarity at the individual level for our particular short panel data set simply permitting limited intrahousehold heterogeneity in time preferences allows the choices of 98 4 of the sample to be rationalised by a model that assumes exponential discounting at the individual level we also find that couples characterized by lower divergence in spousal discount rates are older more likely to have children and wealthier which we take as indications of experiencing higher match quality

college tuition and household savings and consumption abstract despite the high cost of college there has been little study of the adequacy of household savings and other resources available to fund college to gauge their adequacy this paper examines households standard of living as they pay for college using the consumer expenditure survey the main finding is that households appear to do a relatively good job smoothing their consumption into the academic year despite large expenses this is consistent with the life cycle theory of saving and consumption there is some evidence of a delayed decline in consumption and of a decline for households with children first beginning college but the magnitudes of these declines are rather small

new evidence on excess sensitivity of household consumption the monthly salaries and allowances of korean government employees are known in advance but vary greatly throughout the year using a korean monthly panel data set the present study examines how nondurable consumption expenditures in households headed by government employees respond to predictable income changes the study finds a moderate excess sensitivity in consumption that can be attributed to about 9 of the households further analysis shows that these 9 of the households have lower committed expenditures and are likely inattentive consumers

cash on hand and competing models of intertemporal behavior new evidence from the labor market this paper presents new tests of the permanent income hypothesis and other widely used models of household behavior using data from the labor market we estimate the excess sensitivity of job search behavior to cash on hand using sharp discontinuities in eligibility for severance pay and extended unemployment insurance ui benefits in austria analyzing data for over one half million job losers we obtain three empirical results 1 a lump sum severance payment equal to two months of earnings reduces the job finding rate by 8 12 on average 2 an extension of the potential duration of ui benefits from 20 weeks to 30 weeks similarly lowers job finding rates in the first 20 weeks of search by 5 9 and 3 increases in the duration of search induced by the two programs have little or no effect on subsequent job match quality using a search theoretic model we show that estimates of the relative effect of severance pay and extended benefits can be used to calibrate and test a wide set of intertemporal models our estimates of this ratio are inconsistent with the predictions of a simple permanent income model as well as naive rule of thumb behavior the representative job searcher in our data is 70 of the way between the permanent income benchmark and credit constrained behavior in terms of sensitivity to cash on hand

3rd of tha month do social security recipients smooth consumption between checks this paper examines the response of consumption expenditures to the monthly receipt of social security checks since the amount and arrival date of these checks are known to the recipients the basic life cycle permanent income hypothesis lcpih predicts that consumption should not respond to the receipt of these checks using daily diary data from the consumer expenditure survey this paper finds evidence that both the dollar amount and probability of expenditures increase immediately following the receipt of this check most relevant to testing the lcpih categories of instantaneous consumption expenditure such as food away from home increase on the check arrival date the response is found primarily amongst households for whom social security is the primary source of income however the magnitude of the estimated responses are relatively small and do not suggest that the utility losses are large from this non smoothing behavior this abstract was borrowed from another version of this item

testing the cross section implications of friedman s permanent income hypothesis abstract we use modern household data and econometric methods to conduct some of the original tests of the permanent income hypothesis pih suggested and used by friedman 1957 a theory of the consumption function princeton university press princeton the data and methods are superior to those available to friedman allowing us to refine friedman s tests and perform tests he could not do the results provide overall though not universal support for pih