substitute goods auctions and equilibrium this paper identifies two notions of substitutes for auction and equilibrium analysis weak substitutes the usual price theory notion guarantees monotonicity of t tonnement processes and convergence of clock auctions to a pseudo equilibrium but only strong substitutes which treats each unit traded as a distinct good with its own price guarantees that every pseudo equilibrium is a walrasian equilibrium that the vickrey outcome is in the core and that the law of aggregate demand is satisfied when goods are divisible weak substitutes along with concavity guarantees all of the above properties except for the law of aggregate demand

walrasian equilibrium with gross substitutes in this paper we study the problem of efficient production and allocation of indivisible objects among a set of consumers we assume that the agents preferences depend on the bundle of objects and the quantity of money they consume furthermore we assume that preferences are quasilinear in money and that agents have a large endowment of money with indivisibilities it is well known that many familiar properties of the utility functions fail to ensure existence in their striking analysis of the matching problem kelso and crawford 5 introduce the gross substitutes gs condition which ensures the non emptiness of the core we propose two new conditions and show that with quasilinearity they are equivalent article id jeth 1999 2531 available online at http www idealibrary com on

districting and government overspending theories of government spending driven by a common pool problem in the fiscal revenues pool predict that greater districting of a political jurisdiction raises the scale of government this paper presents evidence on this and related predictions from a cross section of city governments in the united states the main finding is that when other plausible determinants of government spending are controlled for greater districting leads to a considerably greater scale of government activity the results also show that at large electoral systems do not and forms of government that concentrate powers in the office of the executive do break this relationship

job matching under constraints studying job matching in a kelso crawford framework we consider arbitrary constraints imposed on sets of doctors that a hospital can hire we characterize all constraints that preserve the substitutes condition for all revenue functions that satisfy the substitutes condition a critical condition on hospitals revenue functions for well behaved competitive equilibria a constraint preserves the substitutes condition if and only if it is a generalized interval constraint which specifies the minimum and maximum numbers of hired doctors forces some hires and forbids others additionally generalized polyhedral constraints are precisely those that preserve the substitutes condition for all group separable revenue functions

under the cover of darkness how ambient light influences criminal activity abstract we exploit daylight saving time dst as an exogenous shock to daylight using both the discontinuous nature of the policy and the 2007 extension of dst to consider the impact of light on criminal activity regression discontinuity estimates show a 7 decrease in robberies following the shift to dst as expected effects are largest during the hours directly affected by the shift in daylight we discuss our findings within the context of criminal decision making and labor supply and estimate that the 2007 dst extension resulted in 59 million in annual social cost savings from avoided robberies

incarceration and incapacitation evidence from the 2006 italian collective pardon abstract in august 2006 the italian government released one third of the nation s prison inmates via a national collective pardon we test for a discontinuous break in national crime rates corresponding to the mass release we also test for the effect of the return of the incarceration rate to its predicted steady state level on national crime rates finally we exploit regional variation in prison releases based on the province of residence of pardoned inmates all three sources of variation yield substantial incapacitation effect estimates and suggest that the crime preventing effects of incarceration diminish with increases in the incarceration rate jel k42

the rise of the states u s fiscal decentralization in the postwar period article i nfo article history one of the most dramatic changes in the fiscal federalism landscape during the postwar period has been the rapid growth in state budgets which almost tripled as a share of gdp and doubled as a share of government spending between 1952 and 2006 we argue that the greater role of states cannot be easily explained by changes in tiebout forces of fiscal competition such as mobility and voting patterns and are not accounted for by demographic or income trends rather we demonstrate that much of the growth in state budgets has been driven by changes in intergovernmental interactions restricted federal grants to states have increased and federal policy and legal constraints have also mandated or heavily incentivized state own source spending particularly in the areas of education health and public welfare these outside pressures moderate the forces of fiscal competition and must be taken into account when assessing the implications of observed revenue and spending patterns

does three strikes deter a nonparametric estimation we take advantage of the fortuitous randomization of trial outcome to provide a novel strategy to identify the deterrent effect exclusive of incapacitation we compare the post sentencing criminal activity of criminals who were convicted of a strikeable offense with those who were tried for a strikeable offense but convicted of a nonstrikeable offense as a robustness check we also make this comparison in states without three strikes laws the identification strategy lets us estimate the deterrent effect nonparametrically using data solely from the three strikes era we find that california s three strike legislation significantly reduces felony arrest rates among the class of criminals with two strikes by 17 20 percent

do states play welfare games abstract this paper uses a panel of state level annual data from 1983 to 1994 for each of the contiguous united states and the district of columbia to explore the degree to which states simultaneously set welfare benefits using instrumental variables estimation we find substantial empirical evidence that is supportive of the notion of welfare competition furthermore we find that state responses to neighbor benefit decreases tend to be significantly larger in magnitude as their responses to neighbor benefit increases our results therefore have potential implications for public policy in the wake of the increased decentralization of welfare policy associated with the welfare reform of 1996

incentives to provide local public goods fiscal federalism russian style abstract based on a unique data set on russian city budgets this paper shows that revenue sharing between regional and local governments provides local governments with no incentive to increase tax base or provide public goods any change in local government s own revenues is almost entirely offset by changes in shared revenues this leads to governmental over regulation of private businesses it is shown that fiscal incentives are a determinant of the formation of private business and the efficiency of public goods provision the russian federalism is compared to the chinese federalism where fiscal incentives reputedly are stronger in many provinces

scale and scope economies in the multi product banking firm abstract the multi product nature of the banking firm is examined utilizing the translog cost function this analysis indicates that contrary to conventional wisdom natural monopoly scale economies and product specific decreasing costs are not robust characterizations of the banking industry there is however evidence that the cost function is characterized by economies of scope the implications of these results are discussed and extensions of this approach suggested

juvenile incarceration human capital and future crime evidence from randomly assigned judges over 130 000 juveniles are detained in the united states each year with 70 000 in detention on any given day yet little is known about whether such a penalty deters future crime or interrupts social and human capital formation in a way that increases the likelihood of later criminal behavior this article uses the incarceration tendency of randomly assigned judges as an instrumental variable to estimate causal effects of juvenile incarceration on high school completion and adult recidivism estimates based on over 35 000 juvenile offenders over a 10 year period from a large urban county in the united states suggest that juvenile incarceration results in substantially lower high school completion rates and higher adult incarceration rates including for violent crimes in an attempt to understand the large effects we found that incarceration for this population could be very disruptive greatly reducing the likelihood of ever returning to school and for those who do return significantly increasing the likelihood of being classified as having an emotional or behavioral disorder jel codes k140 i210

the spillover effects of state spending abstract this paper estimates the extent to which state spending is influenced by the spending of neighboring states examining several different metrics of neighborliness in order to better identify the channels for interstate spillovers it improves on previous studies by taking advantage of exogenous shocks to state medical spending to abstract from correlated local conditions and by allowing for spatial autocorrelation focusing on mandated increases in medical spending the analysis shows that each dollar of state spending causes spending in neighboring states to increase by almost 90 cents the most predictive measure of neighborliness is the degree of population mobility between states suggesting that rational concerns about adverse migration may drive the interdependence of state spending policy

a double track adjustment process for discrete markets with substitutes and complements we propose a new walrasian tatonnement process called a double track procedure for efficiently allocating multiple heterogeneous indivisible items in two distinct sets to many buyers who view items in the same set as substitutes but items across the two sets as complements in each round of the process a walrasian auctioneer first announces the current prices for all items buyers respond by reporting their demands at these prices and then the auctioneer adjusts simultaneously the prices of items in one set upward but those of items in the other set downward it is shown that this procedure converges globally to a walrasian equilibrium in finitely many rounds

budget spillovers and fiscal policy interdependence evidence from the states abstract this paper formalizes and tests the notion that states expenditures depend on the spending of similarly situated states we find that even after allowing for fixed state effects year effects and common random shocks among neighbors a state government s level of per capita expenditure is positively and significantly affected by the expenditure levels of its neighbors ceteris paribus a one dollar increase in a state s neighbors expenditures increases its own expenditure by over 70 cents

the rise in the disability rolls and the decline in unemployment between 1984 and 2001 the share of nonelderly adults receiving social security disability insurance income di rose by 60 percent to 5 3 million beneficiaries rapid program growth despite improving aggregate health appears to be explained by reduced screening stringency declining demand for less skilled workers and an unforeseen increase in the earnings replacement rate we estimate that the sum of these forces doubled the labor force exit propensity of displaced high school dropouts after 1984 lowering measured u s unemployment by one half a percentage point steady state calculations augur a further 40 percent increase in the rate of di receipt

does federalism lead to excessively high taxes the relative strengths of vertical and horizontal tax externalities turn on the balance between the interest responsiveness of the supply of savings and demand for capital the extent to which immobile factors are taxed by the states and the strength of preferences between federal and state expenditures the vertical externality will dominate if the aggregate tax base of the federation is responsible to the state tax instrument tax interactions in federations are more complex than has often been supposed

government decision making and the incidence of federal mandates abstract this paper analyzes the effects of federally mandated program changes on state spending and revenues incorporating and evaluating the predictive value of several common theories of the state decision making process using several sources of exogenous increases in public medical spending i estimate that the entire state portion of the burden of mandated spending is borne by decreases in other public welfare spending while federal mandates may influence the composition of benefits at the state level it is much more difficult for them to change the total level of state transfers comparison of state reactions to different shocks suggests that these reductions are due in part to the substitutability of programs in the voter utility function but also in part to the stickiness of spending within budget categories states with greater racial differences between recipients and voters and states with less generous neighbors reduce other public welfare spending by even more alleviating the burden the medical expansions imposed on their taxpayers mandates may thus serve only to increase inequality across states

collusion efficiency and pricing behavior evidence from the banking industry this paper examines the validity of competing hypotheses used to explain the observed positive relationship between concentration and profits using price proxies from the banking industry we find that leading secondary firms in a market act as price setters price takers this is true regardless of market concentration we interpret this as evidence of the superior efficiency of leading firms and conclude that the higher profits earned by these firms is due to their superior efficiency and not collusive behavior

the political economy of benefits and costs a neoclassical approach to distributive politics this essay offers a rational political explanation for the notorious inefficiency of pork barrel projects with an optimization model of legislative behavior and legislative institutions the model emphasizes the economically arbitrary from a welfare point of view importance of the geographic incidence of benefits and costs owing to the geographic basis for political representation we explore the implications of a legislator s objective function and derive conditions under which a representative legislature will select an omnibus of projects each of which exceeds the efficient scale

misaligned incentives and the scale of incarceration in the united states abstract the incarceration rate has increased substantially in the united states between the 1980s and the 2000s in this paper i explore an institutional explanation for this growth the fact that costs of incarceration are not fully internalized typically prison is paid for at the state level but county employees such as judges prosecutors or probation officers determine time spent in custody i exploit a natural experiment that shifted the cost burden of juvenile incarceration from state to counties keeping overall costs and responsibilities unchanged this resulted in a stark drop in incarceration and no increase in arrests suggesting an over use of prison when costs are not internalized the large magnitude of the change suggests that misaligned incentives in criminal justice may be a significant contributor to the current levels of incarceration in the united states

finders keepers forfeiture laws policing incentives and local budgets to encourage anti drug policing the federal government and many state governments have enacted laws that allowpoliceagencies tokeepasubstantial fractionofthe assets thattheyseizeindrugarrests weuserich new data on police seizures and local spending to explore the reactions of both governments and police to the incentives created by these policies we find that local governments offset police seizures by reducing their other allocations to police partially undermining the incentives laid out in statute and diverting the earmarked funds to other purposes police in turn respond to the real net incentives for seizures once local offsets are takenintoaccount byincreasingthedrugarrestrate heroinpricesalsoincrease suggestingthattheincreased emphasis on anti drug policing raises the supply costs of illicit drugs these findings highlight both the promise and pitfalls of using financial incentives to solve agency problems in a federal system both local agents and intervening governments have sophisticated responses to financial incentives and these responses must be taken into account in both designing effective policies and evaluating their consequences 2007 elsevier b v all rights reserved

organizational structure police activity and crime abstract how does the organizational structure of law enforcement agencies affect police activity and crime we examine the consequences of an organizational reform in israel that transferred the responsibility for housing arrestees from the police to the prison authority using the staggered rollout of the reform in different regions of the country we document strong evidence that this organizational change led to an increase of 11 in the number of arrests and to a decrease of 4 in the number of reported crimes with these effects concentrated in more minor crimes the reform also led to a decrease in the quality of arrests measured by the likelihood of being charged following an arrest these findings are consistent with the idea that the reform externalized the cost of housing arrestees from the police s perspective and therefore led the police to increase its activity against crime