government debt government spending and private sector behavior comment in a recent issue of this review 1983 roger kormendi relied upon the work of martin bailey 1962 1971 and robert barro 1974 to develop an alternative approach to modeling private sector consumptionsaving behavior based on rational evaluation of the consequences of government fiscal policy p 995 briefly this approach involves determining to what extent government spending substitutes for private consumption and to what extent government debt is net wealth and thereby also affects private consumption this consolidated approach to examining private sector consumption is not only novel but appears at a time when there is widespread interest as well as controversy over the effects of government fiscal policy it therefore seems only appropriate to examine further the results obtained by kormendi not to criticize them but rather to explore their robustness this comment specifically explores the sensitivity of kormendi s results to alternative time periods of estimation to the differentiation between federal debt and state and local government debt and to the measurement of government debt particularly par vs market value

seasonality and the production smoothing model abstract the debate over whether firms smooth production relative to demand continues in this paper we find that results obtained in blinder quarterly journal of economics 101 3 1986 431 453 and blinder and maccini journal of economic surveys 5 4 1991 293 328 indicating that firms do not smooth production are greatly influenced by the seasonal adjustment of the census data for us manufacturing using seasonally adjusted data we find significant evidence of production smoothing in 10 of 14 manufacturing industries for the years 1982 1997 further the prevalence of production smoothing has increased over time which we attribute either to fundamental changes in the collection of the data or to the advent of improved methods of inventory management

the market value of outstanding government debt 1919 1975 abstract several new series on the market value of outstanding government debt are reported and their methods of construction described the new series on federal debt are compared with other existing estimates and are shown to be markedly superior to them

federal borrowing and short term interest rates this paper is an empirical study of the effects of federal government borrowing on short term interest rates it is often taken for granted that increases in federal borrowing cause higher short term rates but little empirical support exists for this assumption in fact this paper demonstrates that federal borrowing is a relatively unimportant and insignificant determinant of short term rates an implication of this result is that financial crowding out effects of government deficit spending may not be overly large postulates about interest rate behavior are the driving force behind many hypotheses of the crowding out literature however these interest rate effects have received relatively little direct attention in this literature this is surprising since as a general rule the stronger the interest rate effect is the stronger the crowding out effect will be an empirical determination of the size of the deficit spending interest rate effect gives some empirical content to the crowding out controversy in section ii of this paper the relationship between federal borrowing interest rates and crowding out is discussed and a loanable funds model of short term interest rates is developed in section iii the regression model is generated and tested the essential result is that variation in three month treasury bill rates is caused by expected inflation changes in the monetary base and by changes in the level of economic activity there is no statistically significant relation between short term interest rates and federal borrowing in section iv additional regression tests are performed which confirm the results in section iii and the problem of simultaneous equation bias is discussed the final part of the paper is a discussion of some implications of the results reported in sections iii and iv

classical and variance bounds tests of the production smoothing hypothesis in this paper we test the controversial production smoothing role of inventories by applying both classical econometric techniques and variance bounds tests we use seasonally unadjusted data measured in physical units for five industries the model used is a version of the familiar holt et al 1960 inventory model we also use the data on one industry disaggregated at the district level to investigate potential bias which may arise from aggregation overall the empirical evidence suggests production smoothing in the great majority of the industries examined

the economic consequences of federal deficits an examination of the net wealth and instability issues there is currently disagreement over the economic consequences of federal deficits some economists argue that deficits put upward pressure on real interest rates and thereby crowd out interest sensitive private spending others argue that deficits stemming from lump sum tax cuts do not raise interest rates because the response of individuals will be to increase their saving by the full amount of the resulting deficit to enable future generations to service i e make interest and principal payments on the additional debt without curtailing their consumption in other words individuals view debt and taxes as perfect substitutes because debt financed tax cuts imply higher taxes in the future to service that debt this effectively means that there really is no permanent tax cut so there is no increase in private net wealth current consumption or interest rates stated another way the debt that is issued to finance a tax cut does not add to private net wealth because it implies an offsetting future tax liability but if debt is not viewed as implying future tax increases then debt and taxes are not perfect substitutes and increases in debt resulting from tax cuts will indeed add to private net wealth stimulate consumption and raise interest rates 2

temporal aggregation and estimation of inventory functions abstract in this paper we extend the analysis of the effects of aggregation on the estimated speed of adjustment in inventory models into two directions first we try to find out if lovell s 1993 conclusions regarding the effects of aggregation on the speed of adjustment hold a when real firm data rather than experimental data are used b when the model is modified or when models other than the flexible accelerator are used secondly we examine whether temporal aggregation also leads to underestimation when disaggregated nonseasonally adjusted data are used the evidence we provide gives strong support to mundlak s and zellner s conjectures cited in christiano and eichenbaum 1987 that temporal aggregation leads to downward bias in the estimated speed of adjustment

measuring noise in inventory models this paper has two purposes one is to assess different models of inventory behavior in terms of their ability to approximate the realized data we do this initially for the pure production smoothing model and then for a sequence of generalizations our analysis both performs specification tests as well as measures the deviations of the data from each null model through use of a noise ratio statistic a second purpose is to explore whether observed cost shocks in particular raw materials prices help explain inventory movements we find that the production smoothing model of inventories augmented by buffer stock motives stockout avoidance motives and observed cost shocks well approximates monthly data

a multi sector inventory model abstract two competing paradigms for firm level inventory behavior are production smoothing and s s empirical evidence that aggregate production varies more than sales and inventory investment is positively correlated with sales appears to contradict the buffer stock production smoothing motivation work by blinder and maccini suggests that an s s model better explains these stylized facts i simulate a multi sector model with sequential interaction of heterogeneous agents representing manufacturing wholesale and retail agents who use either smoothing or s s inventory decision rules the results demonstrate that the stylized facts can be explained by a model of this type

the behavior of treasury securities monthly 1942 1984 abstract the monthly market value statistics on outstanding united states treasury debt are reported for the 1981 1984 period in addition a monthly series on privately held gross federal debt is reported for the extended 1942 1984 period together with monthly security price indices for various federal debt aggregates examination of the stochastic structure of t bill prices indicates that the riskiness of t bills has increased dramatically in recent years

simulating the inventory cycle abstract simulations of the inventory cycle utilizing a model based on 84 interacting firms in 21 industries reveals that the ratio of the variance of sales to the variance of output is an unreliable indicator of how seriously firms attempt to smooth production or whether such efforts in the aggregate even out economic fluctuations it is also shown that the two slow estimates of the speed of adjustment reported in many econometric studies of united states data may result in part from aggregation bias rather than from limitations of the flexible accelerator model itself

the optimal enforcement of insider trading regulations regulating insider trading lessens the adverse selection problem facing market makers enabling them to quote better prices an optimal enforcement policy must balance these benefits against the costs of enforcement such a policy must specify i the conditions under which the regulator conducts an investigation ii the penalty schedule imposed if an insider is caught and iii a transaction tax to fund enforcement we derive the policy that maximizes investors welfare this policy entails investigations following large trading volumes or large price movements or both insiders caught making large trades are assessed the maximum penalty but small trades are not penalized given this policy insiders trade most aggressively on news with an intermediate price impact but refrain from trading on moderate or extreme news

the capital gains and losses on u s government debt 1942 1987 the capital gains and losses on u s treasury securities are calculated and reported on a quarterly basis over the 1942 87 period these data are then used to calculate an adjusted measure of the federal budget deficit for the years 1975 87 whereas the rising trend in interest rates over the 1975 81 period substantially reduced the federal deficit this study shows that the reversal of that trend over the 1981 86 period contributed even more greatly to an increase in the deficit also calculated and reported are holding period rates of return on overall marketable treasury debt providing a contrast to existing interest rate series copyright 1989 by mit press

input and output inventories abstract this paper presents a new stage of fabrication inventory model with delivery usage and stocks of input materials that distinguishes between gross production and value added it extends the linear quadratic model of output inventories by adding the joint determination of input inventories empirically input inventories are more important than output inventories maximum likelihood estimation of the decision rules yields correctly signed and significant parameter estimates using data for nondurable and durable goods industries but the overidentifying restrictions of the model are rejected the value added specification dominates because adjustment costs on materials usage are critical to fitting the data

demand generation and price in the norwegian market for electric power we analyse the simultaneous determination of supply demand and price in the competitive norwegian electricity market deregulated in 1991 this market is pretty mature and it offers numerous data required carrying out an interesting study stochastic and seasonal water inflow water storage possibilities and demand variations make this market interesting both from a theoretical and empirical view we establish a small supply demand model of the norwegian electricity market the model is estimated using weekly data from 1994 to 1995 data for 1996 are used for post sample examination of the model unexpected inflow snow and temperature conditions explain a large part of the variation in the electricity generation demand and price within and post sample simulation of the estimated model reproduce demand and price patterns considerably well

insider trading outside search and resource allocation why firms and society may disagree on insider trading restrictions we show that entrepreneurs may prefer to allow insider trading even when it is not socially optimal we examine a model in which an insider manager allocates resources on the basis of his private information and outside information conveyed through the secondary market price of the firm s shares if the manager is allowed to trade he will compete with informed outsiders reducing the equilibrium quality of outside information while the benefits to production of outside information are the same for society and entrepreneurs we show that the social and private costs are different thus entrepreneurs and society may disagree on the conditions under which insider trading restrictions should be imposed article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

measuring the convexity of the cost function abstract in this paper i argue that as might be expected the initial assumption made about the cost function will influence the empirical results obtained regarding the convexity i show that this expectation is supported empirically by estimating the parameters of two quadratic cost functions the first is that function which has been traditionally used in the literature the second is a simplified version of the quadratic cost function where the cost of changing the level of output is dropped since the evidence in the literature suggest that this variable has no significant effect on cost using physical product monthly data for 24 industries we find that the conclusion reached regarding the convexity of the cost function depends on the assumption we make regarding the cost function i further find that the simplified function is consistent with the observed behavior of production and sales while the traditional cost function is inconsistent with that behavior

taking stock a critical assessment of recent research on inventories empirical and theoretical aspects of inventory behavior became hot topics in the 1950s and early 1960s no one seemed to notice the tension that was developing between the emerging macroeconomic and microeconomic views of inventories macroeconomists routinely thought of inventories as a destabilizing factor yet the prevailing micro theory viewed inventories as a stabilizing factor it was a fascinating question that was barely explored instead somewhat inexplicably interest in inventories dried up as if inventories were of minor economic significance and little intrinsic interest by the early 1980s then economists once again knew something they had known in the 1950s that inventory investment is of first order importance in business cycles but they were also beginning to realize that the standard production smoothing buffer stock model of inventories was in deep trouble this paper focuses on developments since that realization

seasonality aggregation and the testing of the production smoothing hypothesis one of the leading hypotheses concerning the dynamics of production over time is the production smoothing hypothesis given a planning horizon which spans a number of production periods the firm need not produce in each period an amount equal to expected sales rather resorting to inventory accumulation and liquidation the firm may follow a production plan temporally smoother than the path of demand if firms faced with convex cost functions chose to smooth the rate of output in order to minimize costs one would expect to observe that the rate of output would vary less than the rate of sales with variations in inventory stocks absorbing some of the fluctuations in sales recently work on the testing of the production smoothing hypothesis has cast doubt on its empirical validity the evidence presented by alan blinder seems to indicate that the variance of production exceeds that of sales in seven out of eight two digit retail industries 1981 and in eighteen out of twenty two digit manufacturing industries 1983 and 1986 the purpose of this paper then is to examine the validity of such tests when seasonally adjusted aggregated data are used the evidence presented show that the relative size of the variances of the seasonally adjusted production and sales does not provide valid tests of the production smoothing hypothesis in addition aggregating over firms where the seasonal patterns differ may also distort tests of production smoothing blinder realized that the use of seasonally adjusted data may not provide an adequate test of the hypothesis stating had they been available i would have preferred to use data that were not seasonally adjusted since the production smoothing model presumably applies to seasonal fluctuations in sales however such data are not available 1983 fn 19 in this paper i focus on the cement industry because the unadjusted disaggregated data are available for the direct testing of the conjecture that aggregate seasonally adjusted data mask production smoothing phenomenon aggregate monthly data on five other industries will also be examined

government debt and the demand for money an extreme bound analysis m keivan deravi charles e hegji and h dean moberly the article provides evidence that there is a relationship between government debt and interest rates via the demand for money this relationship is examined through the wealth effect of government debt on money demand and the robustness of the results is tested by the use of extreme bound analysis in addition to standard econometric techniques we find that ols regression shows government debt affecting the demand for money positively implying that federal government debt is net wealth in addition the extreme bound analysis shows that the estimates of the government debt coefficient are robust under alternative specifications of the goldfeld model i introduction this paper studies the relationship between government debt and interest rates the approach used in this paper differs from previous studies in two ways first this relationship is examined through the wealth effect of government debt on the demand for money second the robustness of the results is tested by use of extreme bound analysis as an alternative to standard econometric techniques theoretically there is no clear cut consensus as to whether or not government debt should be net wealth the argument used most often is that government debt will be net wealth if future tax liabilities to service the debt are for the aggregate economy only partially discounted two explanations for this partial discounting are offered first in dealing with finite lived individuals thompson 1967 assumes that the average remaining lifetime of current taxpayers is shorter than for future interest payments on the federal debt in this situation the net present value of a stream of equal interest payments and taxes will be positive as a counter argument barro 1974 has shown that current generations can act effectively as if they are infinite lived when they are linked to future generations through a series of pairwise transfers of wealth here the realization by current generations that tax liabilities will be left to future generations extends the lifetime of the relevant stream of tax liabilities for debt service government debt is then wealth neutral mundell 1971 provides a second reason for partial discounting by assuming that capital markets are imperfect and that the relevant discount rate for tax liabilities is higher than the rate for interest payments these discount rates are respectively thought of as applying to high risk of loan default and low risk of loan default individuals this difference in discount rates creates a positive wealth effect since under mundell s assumptions government debt held by taxpayers involves a loan from low discount rate to high discount rate individuals as barro 1974 has again countered this wealth effect will exist only to the extent that the government is more efficient at providing such a loan than the private sector finally barro 1974 kormendi 1983 and later aschauer 1985 advance an argument as to why government debt might be negative net wealth suppose there is considerable uncertainty about the intertemporal and cross sectional burden of the future tax liability necessary to service the debt in this case the certainty equivalent value of these future taxes might exceed the certainty equivalent value of the future income stream of the debt so that government debt would be negative net wealth the majority of the empirical studies of the net wealth induced linkage between government debt and interest rates have attempted to measure this relationship using consumption functions if privately owned government debt is net wealth the wealth effect of this debt working through a keynesian consumption function will be positive so that increased government borrowing will result in increased current consumption and interest rates several studies have assessed the relationship between government borrowing and consumption or interest rates via this mechanism

on barro s theorem of debt neutrality the irrelevance of net wealth the effects of national debt on real economic activity has been a recurring topic in the literature on macroeconomic policy analysis since the time of adam smith the problem is usually stated as follows for a given level of government spending is the economy sensitive to the financing mix between tax and debt historically attention has focused on the question of whether or not individuals perceive government bonds as net wealth the link between wealth and real activity being taken as given the main point of debate is well established the issue of bonds raises private assets by the full value of the bonds the corresponding tax liabilities for interest payments and retirement of the debt extend indefinitely into the future the perception of bonds as net wealth would then appear to depend on the length of the individual s optimization horizon the most recent contribution to this debate was made by robert barro 1974 in which he argued that despite the limitation of finite lives bonds will not be regarded as net wealth in a system characterized by operative intergenerational transfers the essence of his argument is that inclusion of a bequest motive effectively converts a finite horizon into an infinite one in that paper barro acknowledged a potential limitation on his proof of the neutrality result it was only valid for bonds that are redeemed at a known point in the future this limitation was raised again in a subsequent exchange with martin feldstein in which barro 1976 agreed that for a growing economy an increase in steady state per capita debt will generate net wealth if the rate of growth is greater than the interest rate however he argued that such a steadystate growth situation would not be consistent with rational utility maximizing behavior the main theme of this paper is that the literature has focused attention on the wrong question the real effects of national debt are independent of whether or not individuals perceive the debt as net wealth the correct question is whether or not changes in the level of debt force individuals into patterns of intertemporal consumption that they are unable to neutralize by adjustments in their portfolio behavior viewing neutrality in this light leads to some reinterpretation of the conditions under which neutrality is likely to hold my analysis starts where barro and feldstein leave off within the framework of the overlapping generations model with gift and bequest motives i show that steady state equilibrium growth is consistent with a growth rate in excess of the interest rate indeed without specific knowledge of the parameters of the economy there are no a priori grounds on which to expect any particular relationship between the growth and interest rates more importantly so long as it is valid to view the aggregate economy as behaving like a composite individual changes in the steady state level of government debt are neutral regardless of which relationship prevails provided one or the other of the intergenerational transfer motives is operative i will refer to this as the extended neutrality theorem section i presents an analysis of steadystate growth with gift and bequest behavior the steady state growth path is shown to lie above the golden rule solution if the gift

insider trading legislation and corporate governance this paper analyzes the impact of insider trading legislation on corporate governance in a context where large dominant shareholders can monitor underperforming companies managers have an incentive to give early warnings about adverse developments to dominant shareholders this information is effectively a bribe to induce dominant shareholders to sell their stock and refrain from intervention if insider trading is unregulated dominant shareholders collude with management at the expense of small shareholders the optimal regime forces the company to disclose all material information to the market private contracting between companies and shareholders leads to optimal insider trading regulation only if initial shareholders can enter a binding commitment otherwise large shareholders and managers recontract at the expense of small share holders enforcement also matters european union legislation requires inside information to be precise such a narrow definition creates a grey zone where information is private but cannot be classified as inside information as a result the effectiveness of corporate governance and firm value are reduced regulation in the us that treats shareholders with a stake exceeding 10 as insiders is potentially harmful

investment and insider trading within a dynamic environment this paper introduces an inside trader to an economy where rational but uninformed traders choose between investment projects with different levels of insider trading when inside information has little value in future investment decisions insider trading distorts investment towards assets with less private information imposing net welfare costs on the economy when an insider s private information is valuable in making future investment decisions the net social benefit of inside trading can be positive the resulting increases in investment efficiency due to more informative prices is enough to compensate for the distortion induced by the inside trader when insiders receive private information more than once insiders may trade to reveal their private information at the beginning of their relationship with the firm this has two effects i more information is revealed in equilibrium and ii there is less chance than an uninformed agent will have to trade with the insider both these effects reduce the investment inefficiencies associated with insider trading as a consequence uninformed liquidity traders prefer to trade in a market with a long term insider this improvement in investment efficiency leads to a pareto improvement both the uninformed traders and the insider are made better off if the insider receives information more than once

the speed of adjustment and production smoothing bayesian estimation abstract the models used for empirical studies of inventory behavior typically include the lagged stock of inventories as a result of the partial adjustment assumption and also exhibit serial correlation in the residuals some researchers suggested that the very low speed of adjustment of the actual inventories to their desired levels and also the lack of empirical support for the production smoothing hypothesis may be the results of applying inappropriate estimation methods to the data recently a bayesian estimator that applies to models containing both lagged dependent variables and autocorrelated disturbances was developed in this paper we examine the empirical evidence on the speed of adjustment of inventories to their desired levels and the degree to which firms smooth production by applying this new estimation method to monthly industry data the results show that the low speeds of adjustment reported in the literature as well as the low degree or lack of production smoothing also reported in the literature may indeed be artifacts of the estimation procedures used

joint production quasi fixed factors of production and investment in finished goods inventories inventory investment has long been an important area of inquiry for empirical work in macroeconomics this is due in large measure to the fact that inventory investment is a major source of fluctuations in aggregate output empirical work on inventories however has been dominated by the use of simple univariate flexible accelerators 1 the major objective of this paper is to propose and test a multivariate flexible accelerator model for inventory investment the model is tested with data on finished goods inventories from the manufacturing sector of the u s economy there are two reasons for undertaking such a task first at a theoretical level a univariate flexible accelerator model asserts that investment in say finished goods inventories is proportional to the gap between the desired and actual stocks of finished goods such a model presumes that decisions by firms on finished goods inventories are made independently of decisions on other stocks but theory suggests that when firms make simultaneous decisions on a variety of stocks which includes not only finished goods but also goods in process inventories the size of the work force etc decisions on finished goods will interact with decisions on

production smoothing in the japanese vehicle industry abstract physical data from the japanese vehicle industry covering monthly observations from 1985 1 to 1994 12 are investigated across nine goods ranging from bicycles to large buses smaller variance of production is found relative to sales across all goods for unadjusted data and in 17 out of 18 cases for seasonally adjusted data such evidence in favor of the production smoothing model psm is confirmed by full information maximum likelihood employed jointly on inventories and sales equations the estimates suggest the industry operates in the range of increasing marginal costs in six out of nine goods positive costs of being away from targeted inventory are also present in six out of these nine goods which make the psm a good description of this industry

the measurement and significance of the cyclically adjusted federal budget and debt this paper summarizes new measures of the cyclically adjusted federal budget and federal debt and explores the relationship of these measures of fiscal policy to macroeconomic variables during the last quarter century the first part of the paper discusses the construction of the new measures the second part presents regression evidence suggesting that the cyclically adjusted debt is related to nominal gnp interest rates and the private stock of fixed capital

the resurgence of inventory research what have we learned abstract recent empirical and theoretical research on business inventories is surveyed and critically evaluated while most inventory research has had macroeconomic motivations we focus on its microtheoretic basis and on potential conflicts between theory and evidence the paper asks two principal questions first how can inventories which are allegedly used by firms to stabilize production nonetheless be a destabilizing factor at the macroeconomic level second why if firms are following the production smoothing model is production more variable than sales in many industries we suggest that the so called s s model may help answer both questions

the relationship between budget deficits and money demand evidence from a small economy a considerable number of empirical studies exploring the links between budget deficits and the demand for money have led to mixed results by using annual data of the greek economy and previous empirical studies this paper empirically evaluates the sensitivity and validity of the keynesian proposition and the ricardian equivalence hypothesis the paper employs cointegration ecm methodology and several diagnostic and specification tests the empirical findings show a significant and positive relationship between budget deficits and the demand for money supporting the keynesian model

government deficits and aggregate demand abstract the evidence presented in this paper indicates that changes in government spending transfers and taxes can have substantial effects on aggregate demand the estimates also indicate that the promise of future social security benefits significantly reduces private saving each the basic implications of the so called ricardian equivalence theorem is contradicted by the data the results are consistent with the more general view of the effects of fiscal actions and fiscal expectations that is described in the paper

cancellable insider trading plans an analysis of sec rule 10b5 1 rule 10b5 1 enables insiders to preplan future trades before becoming informed within a strategic rational expectations equilibrium framework i characterize an insider s unique optimal trading plan which balances portfolio diversification against exploitation of the rule s selective termination option because the rule reduces adverse selection and provides insurance against bad outcomes the rule generally improves welfare for both the insider who later becomes informed and uninformed outsiders provided there exists a sufficient degree of information asymmetry eliminating the rule s selective termination option results in an even greater welfare improvement under a large subset of parametric conditions received march 9 2018 editorial decision january 11 2019 by editor wei jiang

earnings and price based compensation contracts in the presence of discretionary trading and incomplete contracting abstract the paper analyzes the use of reported accounting earnings and price as a basis for compensating a manager when he trades on private information and share price is set rationally based on privately held information publicly available and contractible information and publicly available but noncontractible information in addition we analyze the comparative statics of the compensation on reported earnings and price with respect to changes in the economy

government debt government spending and private sector behavior a current period tax reduction financed by issuing government debt shifts the timing of tax collection from the current period to the future if the future taxes implied by government debt are not fully perceived and discounted by the private sector there will be a net wealth effect that increases private sector consumption thus reducing capital accumulation and growth if on the other hand the implied future taxes are perceived and discounted by the private sector the current period tax reduction will be used to increase private saving to pay for the future taxes and government debt will be absorbed without any real effects on the economy the effects of government spending financed by current period taxation also depend upon private sector perceptions 2 if the benefits of government spending are ignored private sector consumption will decrease in accordance with the reduction in permanent disposable income to the extent that government spending is on consumption type goods that are perceived as substitutes for privately provided consumption goods there will be a relatively greater reduction in private sector consumption to the extent that government spending is on investment type goods yielding future goods and services that are perceived as substitutes for future privately provided consumption goods there will be a relatively smaller reduction in private sector consumption the standard approach to modeling private sector consumption saving behavior involves a rather asymmetric set of assumptions as to how the private sector perceives the various elements of government fiscal policy 3 current period taxes are assumed to be fully perceived but current period government spending is implicitly assumed to be completely ignored by the private sector in considering permanent personal disposable income the private sector is assumed to be forward looking in its assessment of income and taxation the stock of government debt is nevertheless included as part of the stock of private wealth the implicit assumption associate professor of economics graduate school of business university of chicago 1101 east 58th street chicago il 60637 i thank eugene fama levis kochin michael mussa paul evans and an anonymous referee for helpful comments i am particularly grateful to daniel benjamin for contributing many hours of discussion and laura lahaye who was a research assistant and valuable adviser on earlier drafts the theoretical debate on the burden of the debt has been long standing gerald o driscoll 1977 documents ricardo s nineteenth century position robert barro 1974 reopened the debate by introducing the fundamental issue of intergenerational transfers also discussed in merton miller and charles upton 1974 the empirical side of the debate was initiated by levis kochin s 1974 attempt to test for the effects of deficits on consumption and by martin feldstein s 1974 attempt to test for the effects of social security wealth on consumption other empirical contributions include jess yawitz and laurence meyer 1976 myself 1978 and j earnest tanner 1978 1979 with respect to the effects of government deficits and debt and barro 1978 michael darby 1979 and dean leimer and selig lesnoy 1982 with respect to social security wealth see also interesting recent papers by john seater 1982 who generates detailed tests of the effects of deficits and debt on consumption charles plosser 1982 who explores the effects of government spending and debt shocks on interest rates and feldstein 1982 who attempts tests similar to some in this paper see fn 29 2martin bailey s 1962 1971 development of the effects of government spending on private consumption and aggregate economic activity is the seminal contribution paul david and john scadding 1974 extend bailey s ideas and provide some supporting empirical evidence more recently willem buiter 1977 and myself 1978 developed models based on bailey s earlier work barro 1981 has an interesting paper on related issues see also david aschauer 1982 3the standard approach incorporates fiscal policy through the concept of personal disposable income and by including the stock of government debt as part of personal wealth see for example the empirical specification of albert ando and franco modigliani 1963 which has been the basis of most empirical consumption studies since and feldstein 1974 for one of the more influential papers based on the ando modigliani specification

an empirical investigation on causes and effects of the bullwhip effect evidence from the personal care sector abstract this paper analyses the empirical demand data for fast moving consumer goods to measure the bullwhip effect the data consist of the sell in from a large manufacturer to the retailers and the sell out from a retailer to the consumers our findings show that the bullwhip effect can be substantial indeed in more than 50 of the cases the demand upstream sell in is twice as variable as the demand downstream sell out however in other cases it can be negligible and in one case the demand upstream is slightly less variable than the demand downstream so while the bullwhip effect can be very large it need not be so finally we attempted to delve into the dynamics that generate a significant bullwhip effect and discovered that among the various causes that create the bullwhip effect discussed by lee et al 1997a price fluctuations and forward buys driven by sales targets play a decisive role we show that the flatter the final consumer demand sell out the more room there is for the retailers to forward buy in order to take advantage of the deals offered by the manufacturer s sales force toward the end of the sales period on the contrary the more variable the final consumer demand the less willing the retailer is to make a risky inventory investment and thus the more the retailer s orders closely follow consumer demand this result at the product family level is very consistent with the results that cachon et al 2007 obtained at the company industry level

insider trading and the short swing profit rule abstract the short swing profit rule is a federal statute that requires insiders to forfeit any trading profit earned from a combined purchase and sale that occurs within a six month period using a multi period strategic rational expectations equilibrium framework i demonstrate that the rule tends to reduce both the amount of insider trading and the amount of profit earned by an informed insider from information based trades because the rule imposes a constraint on the insider s dynamic trading strategy nevertheless the rule increases the insider s welfare at the expense of uninformed investors outsiders because the rule inhibits risk sharing which leads to an ex ante wealth transfer from outsiders to the insider

production smoothing evidence from physical product data we reconsider the paradox that the variance of production often exceeds the variance of shipments a result that casts doubt on the production smoothing model of inventory behavior most studies of production smoothing have analyzed two digit sic dollar value data from commerce department surveys in contrast this paper examines disaggregated physical product data and finds that production is smoother than shipments in about two thirds of the 38 industry or product groupings considered however doubts about the model persist most notably euler equation estimates of the model s cost parameters are usually imprecise and often do not have the signs postulated by production smoothing models

the behavior of manufacturers inventories evidence from us industry level data abstract recent empirical research on inventory behavior makes extensive use of disaggregated data both from the 20 two digit manufacturing industries identified in the standard industrial classification sic system and physical product data from lower levels of aggregation economists have traditionally grouped these industries by durability of final product or by the presence or absence of unfilled orders for comparison recent research by mattey and strongin economic review federal reserve bank of san francisco 2 1997 3 17 suggests that production technology affects the flow of material through the production process and the use of labor and capital in manufacturing a review of the empirical inventory literature reveals patterns that can be explained by differences in production technology in studies that use both two digit industry data and disaggregated physical product data from four and five digit industries thus there may be more heterogeneity in disaggregated inventory data than was previously thought

more on the speed of adjustment in inventory models when empirical stock adjustment models of manufacturers inventories of finished goods are estimated there appear to be two local minima in the sum of squared residuals functions at one local minimum the estimated adjustment speed is typically quite high at the other it is typically quite low furthermore finding two sets of estimates that fit the data almost equally well does not appear to be a quirk of this particular application rather it stems from a fundamental identification problem that afflicts partial adjustment models of all kinds in the specific context of manufacturers inventories of finished goods the estimation procedure employed by maccini and rossana seems to pick out the solution with rapid adjustment and high serial correlation in the disturbances whereas the solution with slow adjustment and little serial correlation is more often the global minimum this abstract was borrowed from another version of this item

factors affecting monetary policy in an era of inflation abstract a money supply reaction function is developed and estimated within the context of an is lm framework to test the responsiveness of the federal reserve to the government budget restraint and certain parameters of the model the results reveal that a large portion of the recent expansion of the monetary base may be attributed to increases in government debt and provide an essential first step in quantifying the inflationary impact of deficits the monetary base is also expanded in response to increases in inflationary expectations and previous increases in the monetary base but is not statistically correlated to changes in the unemployment rate or potential national income or to rises in interest rates caused by sources other than higher inflationary expectations previous monetary policy or the treasury borrowing requirement

the production smoothing model is alive and well abstract monthly data in physical units for seven industries are used to examine the production smoothing hypothesis the results strongly support this hypothesis significant effects of expected future sales on current production are found for four industries and the estimated decision equations for all seven industries imply production smoothing behavior the previous negative results appear to be due to the use of data biased against the hypothesis the shipments and inventory data of the department of commerce the paper also shows that sensible results can be obtained from estimating approximations to decision equations as opposed to estimating euler equations

government debt in an overlapping generations model with bequests and gifts in 1974 robert barro argued that if individuals in successive generations were linked by bequests changes in the stock of government debt or in social security programs would have no effect on the steady state capital stock barro assumed that individuals held static expectations and that the size of the population was constant martin feldstein 1974 1977 had concluded that social security would reduce the capital labor ratio in models that did not admit a bequest motive and in his 1976 comment on barro argued that the introduction of government debt or social security into a perfect foresight dynamic growth model with bequests would still reduce the capital labor ratio barro replied that feldstein s criticisms were invalid if the steady state capital labor ratio were smaller than the golden rule level but would be correct if the opposite were true barro did suggest however that the latter possibility with overaccumulation of capital might be ruled out in his model as it was in miguel sidrauski 1967 but he was unable to demonstrate that the required behavior would be consistent with utility maximization by finite lived individuals 1976 p 345 although recent work by willem buiter 1979 jeffrey carmichael 1979 1982 truman bewley 1981 a b and others has helped to elucidate the nature of overlapping generations models with bequests and gifts and the issues in the barro feldstein debate they remain far from clear the purpose of this paper is to shed a little more light on the subject in what follows i contend that some of the authors cited above either have specified the individual s optimization problem in an asymmetric way or have failed to impose necessary conditions for a sensible optimization problem or both there is a natural specification of the barro model 1 that emphasizes the similarity between this model and optimal growth models see for example david cass 1965 peter diamond 1973 here in steady state equilibrium the aftertax interest rate r must equal the rate at which individuals discount the utility of their heirs p r p has become known as the modified golden rule and a meaningful individual optimization problem requires that p exceed n the natural growth rate of the economy my results confirm barro s hunch about his model in a barro model r must exceed n much of the barro feldstein 1976 interchange which assumed that r could have any relation to n is wrong headed barro and feldstein reach different conclusions about the effects of government debt and social security because they assume different individual utility functions also my results contrast sharply with those of buiter and carmichael for example carmichael concluded that with intergenerational transfers from parents to children bequests r must exceed n but with transfers in the opposite direction n must exceed r 1982 pp 205 06 indeed i believe that the buiter carmichael representation of the barro model is logically faulty see section ii in section i i outline an overlapping generations model with gifts and bequests and derive its steady state properties in the next section i discuss the shortand long run effects of introducing government debt into the model and contrast my results with those

bullwhip effect measurement and its implications the bullwhip effect or demand information distortion has been a subject of both theoretical and empirical studies in the operations management literature in this paper we develop a simple set of formulas that describe the traditional bullwhip measure as a combined outcome of several important drivers such as finite capacity batch ordering and seasonality our modeling framework is descriptive in nature as it features certain plausible approximations that are commonly employed in practical inventory systems the results are nonetheless compelling and can be used to explain various conflicting observations in previous empirical studies building on the theoretical framework we discuss the managerial implications of the bullwhip measurement we show that the measurement can be completely noninformative about the underlying supply chain cost performance if it is not linked to the operational details such as decision intervals and leadtimes specifically we show that an aggregated measurement over relatively long time periods can mask the operational level bullwhip in addition we show that masking also exists under product or location aggregation in some illustrative cases

volatility of sales expectation errors and inventory investment firm level evidence abstract this paper tests whether demand uncertainty which is measured by the volatility of sales affects inventory investment based on the accelerator buffer stock inventory model using a panel of dutch listed firms in the period 1984 1996 we find that the estimated coefficient of the speed parameter of adjusting inventories increases vastly when the volatility of sales is used as the proxy for unexpected sales in the stock adjustment equation dutch firms on average overstate future sales leading firms to accumulate inventories partially due to the concern of avoiding stock out in case of highly unexpected demand

inside trading and incentives the traditional arguments against inside trading insiders take advantage of other investors inside trading profits overcompensate managers see ross 1979 too much information is collected if inside trading is allowed see fama and laffer 1971 hirshleifer 1971 emphasize the social costs of prohibiting such trading without explaining the private incentives shareholders have to sanction this trading the efficiency argument in favor of inside trading inside trading improves the functioning of the stock market because information as a public good will be underproduced unless those who acquire it profit through inside trading demsetz 1969 does not explain shareholders support of inside trading because the owners of a firm do not seek to improve the efficiency of the stock market by sacrificing trading profits to insiders several alternative hypotheses for shareholders failure to impose restrictions on inside trading have been advanced this paper analyzes shareholders incentives to sanction inside trading i show that if a manager of a firm is initially compensated with earnings contingent contracts then the welfare of that manager and all of the firm s shareholders can be improved by allowing the manager to trade on his private information this result is established in the context of a multiple principal the shareholders single agent the manager model with the manager s trades observable ex post and is robust with respect to the specification of investors preferences and the definition of stock market equilibrium the topic of this paper originated in conversations with steve allen his comments as well as those of nicholas dopuch daniel fischel sanford grossman merton miller robert verrecchia and other members of the workshops on the applications of economics and on accounting research both at the university of chicago are gratefully acknowledged 1 for a list of such arguments see references in manne 1966 chap 1

can the production smoothing model of inventory behavior be saved the production smoothing model of inventory behavior has a long and venerable history and theoretical foundations that seem very strong yet certain overwhelming facts seem not only to defy explanation within the production smoothing framework but actually to argue that the basic idea of production smoothing is all wrong most prominent among these is the fact that the variance of detrended production exceeds the variance of detrended sales this paper first documents the stylized facts then it derives the production smoothing model rigorously and explains how the model can be amended to make it consistent with the facts finally it reviews the theoretical and empirical evidence and tries to draw some tentative conclusions

capital market effects of the ageing population abstract the present article aims at showing the influences of the ageing of the population on the capital market supply of the pension funds in the long run the analysis covers the period 1990 2025 and makes use of an extended version of an economic and demographic computational model published in huijser and van loo 1986 the calculated scenarios show the relation between a number of assumptions about economic variables and the future development of the pension funds operations

government and the financing of health care over the past two decades government financing of health care has increased fourteenfold in 1960 prior to the enactment of the medicaid and medicare programs public expenditures on health care were 6 6 billion in 1965 they were 11 billion in 1975 56 billion and by 1979 they had reached 91 4 billion in addition there was a notable shift from state and local to federal outlays in 1960 state and local expenditures were slightly larger than federal expenditures by 1975 federal expenditures were twice the size of state local expenditures the focus of this paper is twofold i will examine both medicare and medicaid and an indirect health care subsidy namely tax expenditures this expenditure consists of losses in federal revenue resulting from tax savings for certain groups of taxpayers allowed by the tax code the logic of calling these revenue losses expenditures is that a reduction in tax liability is equivalent to an expenditure in the same way that a forgiveness of debt is equivalent to a payment congressional budget office in the case of health losses in federal revenue and thus savings to tax payers result from the exclusion of employer paid health insurance premiums from their employees taxable income and from the deductibility of certain medical expenses for the purpose of computing personal income tax liabilities regarding such tax expenditures on health as a major federal program is not a new concept nor is it unique to compare tax expenditures on health with the amounts spent on medicare and medicaid see for example martin feldstein and elizabeth allison eugene steuerle and ronald hoffman ronald vogel the contribution of the present paper is to provide better estimates of employer provided health insurance premiums and therefore tax expenditures and more importantly to show the distributional effects of each of these programs