Self‐protection? Antidumping Duties,Collusion, and FDI*

It is well established that the threat of antidumping duties can help sustain collusion between a foreign firm and its domestic counterpart. However, when the foreign firm is a multinational with a subsidiary in the domestic country, that subsidiary can undermine efforts for protection, thereby diminishing the threat of duties that would otherwise sustain collusion. Accordingly, we show that the multinational may choose to submit to a tariff even under collusion since evidence indicates that duties are more difficult to remove than initiate. In this way, it is possible to obtain a greater degree of commitment, although it comes at a cost. Nevertheless, we prove that this can be a more profitable strategy than those previously explored. Thus, a parent firm may instruct its subsidiary to support duties against the parent. In fact, we find several cases where subsidiaries of multinationals have indeed filed for protection from their own parents.     

差异化产品价格战的产生与扩散机制分析

本文基于消费者的"0-1"购买特征和产品的纵向差异化特征,建立了一个新的价格战模型。通过应用数学证明和数值模拟的方法发现:(1)合谋体系、背叛体系以及价格战体系的均衡结果均与需求冲击无关;(2)差异化产品厂商的背叛动机以及产品链条的合谋稳定性也与需求冲击无关;(3)产品的差异化程度是影响合谋稳定性的重要因素,差异化程度越大,合谋越稳定;(4)合谋集团对背叛厂商的惩罚策略存在着"误伤效应",这种效应在一定条件下能够自我抑制,表现为产品链条上的价格战和合谋共存,在其他条件下,这种效应不能自我抑制,价格战一旦发动就会迅速扩散到整个产品链条。     

Cost‐Based Anti‐dumping as a Repeated Game

In this paper, we consider anti‐dumping (AD) duties as a tool to facilitate collusion between a domestic and a foreign firm in an infinitely repeated differentiated Bertrand game, where prices are publicly observable and each firm receives a privately observed i.i.d. cost shock in each period. We consider second‐best scenarios, where market‐share or production arrangement with sidepayments is not allowed. We show that there exist equilibrium‐path reciprocal ADs. The collusive (trigger) price is distorted downward compared with complete information benchmark as a trade‐off between diminishing the incentive to deviate and ensuring off‐schedule deviation gains when private cost shocks are highly favourable. The model differs from Green and Porter ( 1984 ) and Rotemberg and Saloner ( 1986 ) in that it is the private cost shocks as opposed to public demand shocks that necessitate modifications of collusion. In conclusion, AD policy may encourage collusion, and therefore, unless the source of market imperfection is carefully examined, laissez faire might be a better choice.     

Collusion and Renegotiation in a Principal–Supervisor–Agent Relationship

We describe a principal–supervisor–agent relationship in which agent and supervisor may collude. To prevent collusion, the principal may contract on a noisy signal which is correlated with the occurrence of collusion. When the signal is informative enough, the principal uses it and no collusion occurs in equilibrium. These contracts, however, are ex post inefficient and are only optimal if the principal can commit not to renegotiate. With renegotiation it is never optimal for the principal to prevent collusion and, at the same time, condition contracts on the signal. In fact, when the signal is informative enough collusion occurs in equilibrium.     

发展中国家普遍服务义务的经济分析

本文构建一个简单的非对称信息模型,分析发展中国家特定的普遍服务问题。在模型中,政府与垄断企业的非对称信息产生于在农村提供服务的边际成本,最优普遍服务政策可以用两种规制手段即资费和网络投资来实现。本文对区别定价和统一定价两种情形进行了对比分析,得出的结论是：在实施区别定价时,与完全信息相比,不完全信息将提高农村地区的资费水平,并且减小相应的网络覆盖面积;而在实施统一定价时,农村地区的定价可能降低,但这是以网络覆盖面积的减小为代价。模型结果还表明,合谋的成胁会弱化企业的激励。有意思的是,在这两种定价机制下,企业和纳税人这两种不同的利益集团均有同规制者合谋的动机。实际上,纳税人利益集团的存在,强化了规制者和企业之间的防止合谋约束,并且为了减少规制者同纳税人利益集团的合谋收益,即使规制者具有高成本信息,也会使配置结果扭曲。     

FINITELY REPEATED PRISONERS' DILEMMA WITH SMALL FINES: THE PENANCE CONTRACT*

This paper investigates finitely repeated prisoners' dilemma games with explicit contractual devices. It shows that full collusion can be achieved in a unique manner by incentivizing the players' final‐period play with small fines. The incentivizing modality is the penance contract, by which a player is penalized if and only if he deviates from the penance strategy in the final period. Using this contractual agreement brings the penance strategy profile into unique subgame perfect equilibrium in the entire game and achieves full collusion without being invalidated by renegotiation.     

Optimal collusion under cost asymmetry

Cost asymmetry is generally thought to hinder collusion because a more efficient firm has both more to gain from deviations and less to fear from retaliation than less efficient firms. Our paper reexamines this conventional wisdom and characterizes optimal collusion without any prior restriction on the class of strategies. We stress that firms can credibly agree on retaliation schemes that maximally punish even the most efficient firm. This implies that whenever collusion is sustainable under cost symmetry, some collusion is also sustainable under cost asymmetry; efficient collusion, however, remains more difficult to sustain when costs are asymmetric. Finally, we show that in the presence of side payments cost asymmetry facilitates collusion.     

Manipulable behavior in international trade

In this paper, we present a Cournot duopoly model to analyze the manipulated behavior in international trade. The WTO is assumed as an arbitrator for the exchange in an oligopolistic industry and sets tariff rules according to the SDT principles; a firm's cost is private information both for the WTO and the foreign rivalries. Subsequent to our analysis of several cases we find that a firm may misreport to the WTO for more production revenue and the government may collude with a firm for higher welfare. It is shown that the misreporting and collusion incentives are related to the WTO tariff rule, the misreported cost and market size. Furthermore, a strategy proof tariff rule has been designed in which firms can never make his revenue better off by misreporting production cost.     

政企合谋、环境规制与企业全要素生产率*

本文利用中国工业企业数据库和地级市层面的企业治污投资数据构建了一个2003—2007年的面板,实证检验了环境规制对企业全要素生产率的影响以及政企合谋在背后的作用。实证结果表明,用企业治污投资占工业增加值比重衡量的环境规制强度每上升1%,企业当期的生产率下降约1%。当政企合谋可能性上升时,环境规制对企业生产率的边际影响在减弱,说明政企合谋带来的监管放松和处罚不力弱化了环境规制对合谋企业生产率的影响。本文的政策启示在于中央政府应加强环保领域统一执法,破解囚徒困境式的环境规制。同时,本文的发现为环保机构监测监察执法垂直管理制度改革提供了合理性依据。     

Analysis of vertical separation of regulators under adverse selection

We analyze the vertical separation of a regulator when a government delegates the task to monitor a regulated firm to an intermediate institution called a “middleman”. We deal with the double adverse selection problem between the government and the middleman, and between the middleman and the firm. We reach three main conclusions. First, we clarify the condition under which vertical separation is socially superior to vertically integrated regulation. Second, we show that when the middleman and the firm are able to collude by using a side contract, collusion can lead to information-sharing effects that enhance social welfare. Third, it is socially desirable for the government to offer a collusion-proof contract to the middleman if the collusion inefficiency is much larger than the expected socially desirable information-sharing effects.      

When imperfect collusion is profitable

This paper studies cartel stability under the assumption that member firms can choose intermediate degrees of collusion as well as the joint-profit-maximizing solution in determining the quota to be produced by each firm. After showing that firms can increase the number of participants by decreasing the degree of collusion, I prove that individual members' profits are maximized when firms choose a (possibly low) degree of collusion such that all firms in the industry want to take part in the cartel. More precisely, if the number of firms in the industry is four or less, then all of them want to take part in the cartel even if the maximum degree of collusion is chosen (i.e., the monopoly output is produced); if the number of firms is greater than four, firms will still create an industry-wide cartel but they will produce a higher quantity than the monopoly output.     

Endogenous rationing,price dispersion and collusion in capacity constrained supergames

This paper examines the feasibility of collusion in capacity constrained duopoly supergames. In each period firms simultaneously set a price–quantity pair specifying the price for the period and the maximum quantity the firm is willing to sell at this price. Under price–quantity competition firms are able to ration their output below capacity. For a wide range of capacity pairs, the equilibrium path providing the smaller firm with its highest stationary perfect equilibrium payoff requires that it undercut its rival’s price and ration demand. Furthermore, for some capacities and discount factors supporting security level punishments, price shading and rationing arise everywhere on the set of stationary perfect equilibrium paths yielding (constrained) Pareto optimal payoffs. That is, price shading may not only be consistent with optimal collusion, it may be a requirement of optimal collusion.     

Renegotiation in repeated games

In repeated games, subgame-perfect equilibria involving threats of punishment may be implausible if punishing one player hurts the other(s). If players can renegotiate after a defection, such a punishment may not be carried out. We explore a solution concept that recognizes this fact, and show that in many games the prospect of renegotiation strictly limits the cooperative outcomes that can be sustained. We characterize those outcomes in general, and in the prisoner's dilemma, Cournot and Bertrand duopolies, and an advertising game in particular.     

DEFECTING FROM R&D COOPERATION

This paper introduces defection into the strategic R&D model. In defecting, a firm cheats by choosing its R&D expenditures to maximise its own profits, instead of maximising the joint profits of the cooperating firms. Two cooperative environments are considered: R&D cartelisation, where firms coordinate R&D activities; and RJV cartelisation, where firms coordinate R&D activities and share information. Under R&D cartelisation, defection entails an increase (decrease) in R&D and effective spillovers for low (high) spillovers; whereas under RJV cartelisation, defection always entails a decrease in R&D and effective spillovers. Under R&D cartelisation, consumer surplus and total welfare increase (decrease) with defection when spillovers are low (high). Whereas consumer surplus and welfare always decrease with defection under RJV cartelisation. Under R&D cartelisation, the incentives for defection first decrease then increase with spillovers; they also increase with the size of the market, but decline with production costs and R&D costs. Moreover, the incentives for defection are higher under RJV cartelisation. With low spillovers under RJV cartelisation, a firm prefers to be subject to defection by the other firm, to not cooperating at all. Punishment for defection is considered, under the form of abstaining from information sharing.     

Double moral hazard and renegotiation

We examine renegotiation in a double moral hazard model with an ex ante budget balancing constraint when both the principal and the agent are allowed to make a renegotiation offer even though the principal proposes an initial contract. Under a belief restriction, any perfect-Bayesian equilibrium leads to an allocation that is superior to the second-best allocation of the standard double moral hazard model without renegotiation. The result of this paper gives some reasons for the existence of intermediary organizations such as holding companies, law houses, consulting firms, investment banks or venture capital. The result can also provide the rationalization for a fund set up by a group of firms of the industry in which their product is legally required to be recyclable.     

Cournot Duopoly With Multi-period Competition: Inventory as a Coordination Device

This paper analyses a Cournot duopoly model with finitely repeated competition. Each firm is allowed to hold inventories for a period. When there are more than two periods, inventory-holdings encourage firms to take collusive actions. By holding large inventories, a firm can commit to large sales in the next period, giving inventories a strategic value. When a firm deviates from collusion, the strategic value of inventories allows the non-defecting firm to become the Stackelberg leader in future markets, forcing the defecting firm to become the Stackelberg follower. Collusive sales can be attained with this threat of punishment.     

Is capital a collusion device?

Summary. We examine how irreversible capital reduces the possibility of a duopoly to sustain implicit collusion by grim strategies, when the product is homogenous and firms compete in quantities. Compared with the case of reversible capital, there are two countervailing effects: Deviation from an existing collusion is less attractive, because capital once installed causes costs forever. But the punishment will also be less severe due to the high capacity the deviating firm can build before punishment starts. The last effect dominates, meaning that the commitment value of capital is negative for all firms. If capital is irreversible, collusion breaks down for realistic magnitudes of interest rates. Received: April 30, 1999; revised version: November 30, 2001     

算法合谋的反垄断规制及工具创新研究

在数字经济领域,数字商务企业采用算法定价会明显提高合谋的可能性和可实施性,具有较大的价格合谋风险,因而成为反垄断法关注的重点。学理上,尚待明确的问题有:算法定价促进合谋的内在机理和类型化机制;如何创新反垄断执法体制以有效规制自主学习算法;在反垄断事后执法无效情况下,是否需要以及如何实行事前规制等。研究表明:算法合谋的反垄断规制宜坚持分类治理原则,采取事后反垄断禁止为主并辅之以事前规制的政策组合,反垄断政策工具创新应主要针对自主学习算法合谋。算法合谋反垄断规制政策需重新界定构成非法合谋的"协议"要件,明确当事企业的主体责任,重在采取以"软执法"为主的反垄断执法体制。事前规制政策应坚持"基于设计来遵守法律"的原则,强化算法审查机制和审查能力建设,并将提升算法透明度和可问责性作为重点。     

Environmental regulation and technology transfers

This paper analyzes the situation in which a national government introduces environmental regulations. Within the framework of an international duopoly with environmental regulations, an environmental tax imposed by the government in the home country can induce a foreign firm with advanced abatement technology to license it to a domestic firm without this technology. Furthermore, when the domestic firm's production technology is less efficient than that of the foreign firm, the foreign firm may freely reveal its technology to the domestic firm. These improvements through the voluntary transfer of technology imply that environmental regulations have positive impacts on innovation.     

Strategic Trade Policy and Signalling with Unobservable Costs

In an environment in which home firm costs are private information, home firm output can signal these costs to a foreign competitor and a home policymaker. High-cost home firms have an incentive to misrepresent themselves as low-cost. This is understood by the foreign firm and the home policymaker and results in the first-period optimal per-unit output subsidy to the home firm being less than it would be if home firm output was not a signal of home firm costs. These results are extended to the case of simultaneous signalling and signalling through price.