C72 - Noncooperative GamesReturn

This paper establishes a two-stage Hotelling model to identify the implications of the upgrades of durable goods produced by a spatial monopoly. The major findings indicate that, due to the positive effects on profits of the upgrading of products, the monopoly has the motivation to launch upgraded versions with high quality instead of solely producing products with low quality. The monopoly, meanwhile, would not make a commitment to either the high-quality products or the low-quality ones. In addition, the price of the low-quality products decreases as upgraded ones appear on the market in a second stage, since no consumers would store the low-quality products for future consumption.

Innovation is an important topic in economics. This paper highlights duopoly innovation under the Hotelling model with game theory approaches. This paper argues that market power, as measured by the cost advantage of a dominant firm over its rival, serves to enhance the incentive to innovate in a Hotelling model of spatial competition. This result implies that a firm with cost advantage will have a larger incentive than its rivals to further its cost advantage as new opportunities for innovation arise thereby implying that innovation increases concentration. This result is in contrast to the result obtained by Holmes et al. (2012) who use the Betrand model to show that "market power" lowers the incentive to innovate. We think that the inelastic demand causes this economic phenomenon.

This paper highlights the monopoly firms' commitments for goods requiring high maintenance expenditure, such as elevators, televisions and computers. A guarantee time limit model to maintain these special goods is presented in this paper. Based on this model, several types of commitments with different guarantee time limits are compared under monopoly conditions. This paper finds that the guarantee pattern has no effect on the monopoly firm's profits if all information is known to both the consumer and the monopolist. It is also shown that if a monopoly firm exaggerates its product quality claims in its advertisements, then it cannot meet its warranty guarantees. Industrial organizational theory is employed to analyze maintenance guarantees in this work.

Voluntary contribution mechanism to public goods is one of the traditional types of economic experiments. The article summarizes the results of series of experiments that have been conducted with several groups of Czech university students. Using the threshold mechanism the impact of several factors (experience, communication and the form of experiment) on voluntary contribution to public goods is tested. The results confirm, to a great extent, findings published by foreign studies. The results show that Czech students also do not behave consistently with the traditional economic public goods model, i.e. they cooperate voluntarily in situations that favour free riding. Threshold is a traditional part of (mostly American) charitable collections and can be regarded as one of the most successful modifications of the voluntary contribution mechanism to public good. Experiments involving Czech students indicate that such technique can be successful even in Czech non-profit sector.

This paper extends the costly enforcement model of optimal financing to the case of investment projects financed by several lenders when the legal and economic situation in the emerging market economy does not allow for commitment to contracts and for securitization of credit contracts through use of collateral. We consider the asymmetric situation when only one lender is a big strategic investor. All other lenders are small passive investors. We first provide the sufficient and necessary condition for renegotiation proofness. Then we show that the optimal verification is deterministic. We also discuss the conditions under which the optimal contract is a debt contract. Our methodological framework may be used for example for the analysis of credit provision in food supply chains, where often many small non-strategic investors (small farm-level producers) interact with some big strategic investor (the advanced technology supplier) in the explicit or implicit crediting of some parts of food supply chain like the food processing plants or storage facilities.

Traditionally, enforcement of consumer protection laws meant to provide quality assurance of goods and services was considered a responsibility of the state in its various guises. Unfortunately, enforcement is an expensive, and hence particularly problematic proposition in transition economies that have many competing demands on their very scarce resources. An alternative mode of enforcement is through reputation. Yet for reputation to be able to fulfill this disciplining role, a high degree of information flow, or transparency, is imperative. Transparency, of course, is not something that transition economies typically excel in. In this article we discuss a third form of enforcement that relies much less, or not at all, on the state, and that relies on the market only indirectly: Certification agencies force their members to reveal their (good) type through costly signals that can be ""engineered"" to induce a separating equilibrium. We discuss the viability of this system of enforcement in an environment (namely, fundraising) where state and market have failed to deliver a satisfying degree of quality assurance.