Guns and crime revisited

I focus on the effect of changes in public security (policing) on private security measures that potential victims can take. In particular, I look at the tradeoff between different types of private security measures – such as using or carrying guns, carrying less cash or keeping less valuables at home, and using burglar alarms or Lojack – and study how this tradeoff is affected by changes in public security. If private householders’ direct security expenses are strongly substitutable with public policing (e.g., for guns which may be more useful in badly policed areas), an increase in policing results in a drop in these expenses; it also results in carrying or keeping less cash (an indirect security measure which reduces the prize a criminal can seize). If, however, householders’ direct security expenses are “complementary” to policing in the sense that they are more effective when police response is rapid (e.g., for burglar alarms), more policing increases these expenses unless the efficacy of joint (public and private) security expenses on combating crime encounters very sharply diminishing returns; moreover, a rise in policing also induces carrying or keeping more cash. An increase in penalties increases the tendency to keep cash on hand, and also reduces crime, provided that as private precautions increase, with policing constant, it takes a larger increment in security spending to compensate for a specific drop in penalties. The results are consistent with some empirical trends in crime rates, policing, penalties and private precautions.     

Mixed Oligopoly and Environmental Policy

We show in this paper that when there are both public and private firms in product markets (a mixed oligopoly) the decision whether to privatize a public firm interacts with the environmental policy of governments. Therefore, the outcome of the decision whether to privatize a public firm may be different if the government internalizes the environmental damage than if the government ignores it. When the government sets a tax to protect the environment, the tax is lower in the mixed oligopoly than in the private one even though the environmental damage is greater. In the mixed oligopoly the marginal cost of the public firm is lower than the market price.     

The merger paradox in a mixed oligopoly

This paper examines the set of surplus maximizing mergers in a model of mixed oligopoly. The presence of a welfare maximizing public firm reduces the set of mergers for which two private firms can profitably merge. When a public firm and private firm merge, the changes in welfare and profit depend on the resulting extent of private ownership in the newly merged firm. When the government sets that share to maximize post merger welfare as assumed in the privatization literature, the merger paradox will often remain and the merger will not take place. Yet, we show there always exists scope for mergers that increase profit and increase (if not maximize) welfare. Interestingly, these mergers often include complete privatization.     

Partial privatization in mixed duopoly with price and quality competition

We analyze price and quality competition in a mixed duopoly in which a profit-maximizing private firm competes against a state-owned public firm. We first show that the welfare-maximizing public firm provides a lower quality product than the private firm when they are equally efficient. In order to maximize social welfare, government manipulates the objective of the public firm that is given by a convex combination of profits and social welfare. It is demonstrated that an optimal incentive of the public firm is welfare maximization under the absence of quality competition, but it is neither welfare maximization nor profit maximization under the presence of quality competition. The result supports a completely mixed objective between welfare and profit maximizations or partial privatization of the public firm.      

Civil service reform,self‐selection,and bureaucratic performance

I use a formal model to analyze the effect of civil service protections on bureaucratic performance. In a two‐period model, a public manager observes a bureaucrat's actions for a period and decides whether to retain or attempt to remove the bureaucrat. Bureaucrats vary in terms of their intrinsic motivation and choose between careers in government or the private sector. I show that bureaucratic performance is greater in any separating equilibrium in which motivated bureaucrats choose government than in all equilibria in which they do not. Stronger civil service protections reduce the amount of effort that motivated bureaucrats must exert to distinguish themselves from their unmotivated peers in order to ensure retention. This strengthens incentives for motivated bureaucrats to choose careers in government. Stronger civil service protections, however, also reduce the ability of public managers to remove unmotivated bureaucrats. These competing effects yield a non‐monotonic and discontinuous relationship between civil service protections and bureaucratic performance. I use the model to analyze recent reforms to U.S. state and federal personnel management that have significantly rolled back traditional job protections.     

Impact of health aid in developing countries: The public vs. the private channels

This paper examines the efficient allocation of international health aid. We built a simple macroeconomic model which considers an endogenous allocation of aid mixed between the public and the private channels. We derive a non-cooperative interaction-game involving the private sector, the donor and the recipient government. We compare the equilibrium of the game to the optimal level of health aid allocation, showing a gap between both. The empirical analysis is based on the Institute for Health Metrics and Evaluation (IHME) and World Health Organization (WHO) data sets using dynamic panel data model with fixed effects (system-GMM). Our results show that health aid actually reduces adult mortality in developing countries. Furthermore, we show that the actual allocation of aid-mix between government and private channels is not health efficient and there is room for reallocation.     

How (Not) to Foster Innovations in Public Infrastructure Projects*

The government wants an infrastructure‐based public service to be provided. First, the infrastructure has to be built; subsequently, it has to be operated. Should the government bundle the building and operating tasks in a public–private partnership? Or should it choose traditional procurement (i.e., delegate the tasks to different firms)? Each task entails unobservable investments to come up with innovations. It turns out that, depending on the nature of the innovations, bundling can either stimulate or discourage investments. Moreover, we find that if renegotiation cannot be prevented, public–private partnerships might lead the government to deliberately opt for technologically inferior projects.     

A quantitative analysis of Turkish Private Education Reform

A recent education policy Turkish government is wishing to undertake is to shut down all private supplementary education centers (SECs) unless SECs manage to convert into a private school. With this policy, the government is willing to increase equality of opportunity among students. We show quantitatively that the policy, in fact, leads to a decrease in equality of opportunity since SECs are given the option to convert into private schools. We use a political economy model of education at which households, heterogeneous with respect to exogenously set income, choose among a continuum of private schools differentiated by tuition and a public school. Households choosing the public school can privately supplement their child's education spending in any amount. Public school is free of charge, and its spending is financed by income tax revenue collected from all households. Income tax rate is determined by majority voting. Achievement of a child depends only on educational spending. We calibrate the model's parameters by matching certain targets from 2013 Turkish data. We then exogenously restrict the supplemental education spending to zero in a counterfactual experiment. We find that variance of achievement (or inequality of opportunity) increases by 23.51% and mean achievement decreases by 1.74%.     

财政政策、货币政策与国外经济援助

本文通过把国外经济援助分成直接对私人的经济援助和直接对政府的经济援助来讨论这两类经济援助对政府财政政策和货币政策的影响。我们发现对私人的经济援助的增加可以使得私人消费水平和政府公共消费水平增加 ,但是它也导致政府收入税税率和通货膨胀率的提高 ;另一方面 ,对政府的经济援助增加可以使得均衡时的私人资本存量、私人消费水平和政府公共消费水平增加 ,同时可以使得均衡时的收入税税率和通货膨胀率下降。     

Quality and Welfare in a Mixed Duopoly with Regulated Prices: The Case of a Public and a Private Hospital

Abstract. Hospital markets are often characterized by price regulation and the existence of different ownership types. Using a Hotelling framework, this paper analyses the effect of heterogeneous objectives of hospitals on quality differentiation, profits and overall welfare in a price‐regulated duopoly with exogenous symmetric locations. In contrast to other studies on mixed duopolies, this paper shows that, in this framework, privatization of the public hospital may increase overall welfare. This holds if the public hospital is similar to the private hospital or less efficient and competition is low. The main driving force is the single‐regulated price which induces under‐provision (over‐provision) of quality of the more (less) efficient hospital compared with the first best. However, if the public hospital is sufficiently more efficient and competition is fierce, a mixed duopoly outperforms both a private and a public duopoly due to an equilibrium price below (above) the price of the private (public) duopoly. This medium price discourages over‐provision of quality of the less efficient hospital and – together with the non‐profit objective – encourages an increase in quality of the more efficient public hospital.     

A MODEL OF ENDOGENOUS PAYOFF MOTIVES AND ENDOGENOUS TIMING IN A MIXED DUOPOLY*

A model of endogenous payoff motives and endogenous order of moves is analysed in a mixed duopoly. We find that, when a non‐negative price constraint is imposed on public and private firms' quantity choice, both firms always choose to be relative‐payoff‐maximisers, and both simultaneous move and sequential move can be sustained in equilibrium. In contrast, when non‐negative absolute profit constraint is imposed, public and private firms always choose to be absolute‐payoff‐maximisers, and only sequential move can be sustained in equilibrium.     

Stable market structures from merger activities in mixed oligopoly with asymmetric costs

This paper examines endogenous merger formations in a mixed oligopoly. Applying the core as a solution concept, we analyze which market structure(s) remain(s) stable when three firms—two symmetric private firms and one inefficient public firm—are allowed to merge with each other in a mixed Cournot industry. We show that according to the value of the marginal cost of the public firm, there always exists a pair of share ratios of the owners of both the (pre-merged) public firm and the (pre-merged) private firm such that the market structure with the merger between the public firm and one private firm belongs to the core. When the initial market structure is a mixed triopoly, it can only be blocked when one public firm and one private firm merge. Furthermore, we conduct a similar analysis in a general mixed oligopoly with one public firm and n private firms.      

论公共部门合理边界的决定——兼论混合公共部门的价格形成机制

本文从中国公共部门(主要是提供私人品的公共部门)实际存在的问题出发,研究了其中存在的政府失灵,揭示了其根源在于政府目标的错位,在于缺乏公共需求对于公共供给的决定机制和信息互动反馈机制。由此导致了以政府目标为基础的公共部门的边界经常是模糊不清的。因此,我们从理论上提出了社会效益目标最优化所决定的公共部门边界的基本命题,以此作为评价政府行为是否合理的依据。由于公共品与私人品的边界不清还必然导致混合公共部门的价格扭曲,在合理界定两者的前提下,通过不同约束条件和不同范围内的放开行业准入,引进多元化的竞争方式,能够增加公共供给和缓解供给不足,形成合理价格的均衡基础。     

Liberalisation,competition and ownership in the presence of vertical relations

This contribution analyses a market with an upstream bottleneck monopoly and a downstream activity that may either be vertically integrated or separated. Separation always reduces the consumer surplus, and the total surplus unless there are large cost reductions. Downstream competition from a public or private network monopoly would crowd out other firms, also when public ownership is associated with more modest objectives than welfare-maximisation. A market is therefore less likely to remain a mixed oligopoly than without vertical relations. However, private firms would survive in a moderately welfare-improving mixed oligopoly with cross-subsidisation and access charges equal to marginal costs.

Does private security affect crime?: a test using state regulations as instruments

Private security is employed to deter criminals from attacking specific targets, presumably not to produce general deterrence. Indeed, private security generates negative spillovers as criminals substitute non-protected targets for protected targets. Specific deterrence efforts may generate positive spillovers too, however, by raising the expected cost of committing crimes, thereby reducing crime in an area. The hypothesis that private security deters crime at the state level is tested. The demand for private security in an area is expected to be simultaneously dependent on the level of crime; so, an instrumental variables approach is employed in a panel-data fixed-effect model using state-level data from 1998 to 2010. Instruments for the amount of private security are state-wide licensing regulations for firms specializing in providing security, since these regulations should influence entry. Some state-level measures of violent and property crime are shown to be negatively and significantly related to increases in private security, suggesting that private security generates a general deterrence effect.     

Terror and the costs of crime

This paper argues that terrorism, beyond its immediate impact on innocent victims, also raises the costs of crime, and therefore, imposes a negative externality on potential criminals. Terrorism raises the costs of crime through two channels: (i) by increasing the presence and activity of the police force, and (ii) causing more people to stay at home rather than going out for leisure activities. Our analysis exploits a panel of 120 fatal terror attacks and all reported crimes for 17 districts throughout Israel between 2000 and 2005. After controlling for the fixed-effect of each district and for district-specific time trends, we show that terror attacks reduce property crimes such as burglary, auto-theft, and thefts-from-cars. Terror also reduces assaults and aggravated assaults which occur in private homes, but increases incidents of trespassing and “disrupting the police.” Taken as a whole, the results are consistent with a stronger deterrence effect produced by an increased police presence after a terror attack. A higher level of policing is likely to catch more people trespassing, and at the same time, reduce the number of property crimes. The decline in crimes committed in private houses is likely an indication that the tendency for individuals to stay home after a terror attack further increases the costs of crime.     

Public capital,deficit financing,and economic growth in a stochastic economy

This paper examines the relationship among deficit-financing fiscal policy, risk and economic growth in a stochastic endogenous growth model with private and public capital. We show that there are positive balanced-growth rate and a debt-to-GDP ratio that depend on deep parameters such as the income tax rate and the standard deviation of the growth rate of private and public capital. Investment and fiscal shocks influence the mean and variance of the growth rate and the debt dependency rate through portfolio changes and capital accumulation. In particular, an increase in the risk of private investment destabilizes the economy and reduces the mean growth rate if the portfolio change is drastic, and this increase in risk increases the debt-to-GDP ratio. In contrast, an increase in the income tax rate stabilizes the economy, increases the mean growth rate, and has a positive or negative effect on the debt-to-GDP ratio according to the ratio of public to private capital if the income tax rate is sufficiently small.     

Mixed oligopoly and spatial agglomeration: a comment

Abstract.  This paper extends Matsushima and Matsumura (2003) by incorporating a large production cost difference between public and private firms in a quantity setting spatial mixed oligopoly. The public and private firms first choose their locations in a linear market and then compete in quantities. It is shown that for a significant inefficiency of the public firm, all firms (including both public and private firms) agglomerate at the market centre.     

Financing Higher Education: A General Equilibrium Public Choice Approach*

A public choice approach is used to examine the level of a tax-financed grant chosen by a cohort, allowing for a wide range of interdependencies, including the goverment's budget constraint The existence of an externality is necessary, but not sufficient, for support of a grant It is shown that a majority voting equilibrium exists. Comparative static analyses are carried out using a minimum of assumptions about the structure of the model An increase in government expenditure for non-higher education purposes is associated with an increase in the preferred grant while an increase in private returns to education reduces the grant     

The Optimal Privatization Policies under an International Mixed Duopoly

This paper explores the socially optimal privatization policies under the setting of international mixed duopoly. We find that partial privatization is socially optimal under Cournot competition and private leadership competition, whereas full nationalization is socially optimal under public leadership competition. Moreover, the equilibrium social welfare under private leadership competition is higher than that observed under Cournot competition and that observed under private leadership competition, which differs from the findings of Matsumura ( 2003b ). We also show that the endogenous timing game has a subgame perfect Nash equilibrium outcome, under which the government chooses a partial privatization policy, and private leadership competition emerges as the optimal output decision sequence of firms. An important policy implication from this paper is that the government should partially privatize the public firm and facilitate the emergence of private leadership competition in an international mixed market.