Risk Aversion,Heterogeneity and Contests

We introduce a novel method of modellingcontests that avoids the complexitiesencountered by the `best response function'approach. We analyse contests in which (i)there are many risk averse players, (ii)attitudes to risk may differ acrossindividuals, and (iii) the technology thattransforms rent-seeking effort intoprobability of winning may also differacross individuals. We establish that, ifevery player has a constant degree ofabsolute risk aversion, a uniqueequilibrium exists. We also establishcomparative static results and examine howthe level of rent dissipation is affectedby the heterogeneity of attitudes towardsrisk and the precise nature of the technology.     

Risk aversion in two-period rent-seeking games

This work analyzes a two-period rent-seeking game, with the aim of studying the effect of risk aversion on the optimal choices made by the rent-seekers. We first prove that the equilibrium in two-period rent-seeking games always is unique. The analysis also shows that more risk aversion reduces the investment in the rent-seeking game in a two-period framework without introducing the additional condition of prudence, required in one-period models. Similarly, the introduction of a risky rent, instead of a given rent, implies, in the two-period framework, a reduction in investment under the condition that the rent-seekers are risk averse. Moreover, with risk aversion, larger first-period wealth increases investment in the rent-seeking game and larger second-period wealth reduces it. When both first-period and second-period wealth increase, investment in the rent-seeking game declines if the rent-seeker is risk averse and imprudent. Lastly, when a risky level of second-period wealth is introduced, the rent-seeker increases (reduces) investment in the rent-seeking game if he is risk averse and prudent (imprudent).

     

Contests with an unknown number of contestants

This paper studies rent-seeking contests where the contestants do not know the number of actively competing contestants. Two models are compared. In the first, all players are risk neutral; in the second, all have constant absolute risk aversion. If the expected fraction of active contestants is low, an increase in the number of potential contestants increases individual rent-seeking efforts. This effect is in contrast to the complete information case where individual rent-seeking efforts decrease in the number of contestants. The effect is more likely under risk neutrality, but also possible under risk aversion. Equilibrium rent seeking efforts are lower under risk aversion if and only if the expected fraction of active contestants is low.     

Endogenous sharing rules in collective-group rent-seeking

This paper examines the possibility of endogenous determination of intra-group sharing rules in a collective-group rent-seeking game. Collective-group rent-seeking is considered as a two-stage Nash-Cournot game in which sharing rules are determined prior to individual decision on voluntary contribution. The solution is subgame perfect and is obtained by backward induction. In competition between two groups of the same size, the Nash equilibrium sharing rule of each group is to distribute rent to each according to relative effort. Total rent-seeking outlays in this case are equal to those obtained by Tullock (1980). When more than two groups compete for a rent, the sharing rule based on relative effort is again likely to be the Nash equilibrium strategy of each group. The amount of total rent-seeking outlays is also equal to that in Tullock (1980). In a nutshell, the rent is substantially dissipated if sharing rules are endogenously determined.     

A generalized model of rent-seeking behavior

In this paper I present a formal analysis of rent-seeking games in which the players' valuations for the prize are represented as vectors. The players in this game are risk neutral and may not be indifferent to who wins the contestable rent if it is someone else. Both Tullock's original rent-seeking model and the public goods rent-seeking model by Katz et al. turn out to be special cases of this more general model.     

Privatization,bureaucracy, and risk aversion

The role of governmental risk aversion in the decision to privatize the production of goods and services has not been examined closely. Using a model of a risk-averse, single-service Niskanen bureaucrat, we determine the conditions under which a bureaucrat will prefer to privatize rather than produce in-house. If the private-sector firm is risk neutral, the result will be a fixed-fee contract with complete insurance. If the private-sector firm is risk averse, the result will be a cost-plus contract with the degree of cost sharing determined by the bureaucrat's share of total risk aversion. In both cases, the bureaucrat's sponsor may affect the likelihood of privatization by manipulating the rewards and penalties imposed on the bureaucrat.     

Rent-seeking for pure public goods

In this paper we present a formal analysis of rent-seeking for public goods by two or more groups with different numbers of individuals. We begin by considering equally wealthy groups under risk neutrality, a case which constitutes our basic model. Several surprising and interesting results emerge from the analysis of this basic case. The problem is then extended to deal with (a) groups with different wealth levels, and (b) risk aversion. This last extension brings about a further crop of interesting and useful results.     

Stackelberg rent-seeking

In this paper I present a formal analysis of rent-seeking games in which the players do not move simultaneously. I consider rent-seeking situations where the players are risk neutral and may value the prize differently. The subgame perfect equilibrium outcome in this Stackelberg game provides several surprising and interesting results. I extend the problem to deal with cases of incomplete information concerning the value a player has for the politically contestable rent.     

Does foreign aid distort incentives and hurt growth? Theory and evidence from 75 aid-recipient countries

Foreign aid transfers can distort individual incentives, and hence hurt growth, by encouraging rent seeking as opposed to productive activities. We construct a model of a growing small open economy that distinguishes two effects from foreign transfers: (i) a direct positive effect, as higher transfers allow the financing of infrastructure; (ii) an indirect negative effect, as higher transfers induce rent-seeking competition by self-interested individuals. In this framework, the growth impact of aid is examined jointly with the determination of rent-seeking behavior. We test the main predictions of the model for a cross-section of 75 aid-recipient countries. There is evidence that aid has a direct positive effect on growth, which is however significantly mitigated by the adverse indirect effects of associated rent-seeking activities. This is especially the case in recipient countries with relatively large public sectors.     

Do too many cooks always spoil the stew? An experimental analysis of rent-seeking and the role of a strategic buyer

Laboratory methods are used to evaluate the effects of institutional arrangements and rent-defending activity on rent-seeking auction outcomes. In part, Nash equilibrium predictions are a useful behavioral guide: As predicted, more rents are dissipated in perfectly-discriminating auctions, where the high-bidder wins, than in lotteries, where relative bids determine the chance of winning. Also as predicted, the introduction of a rent-defending buyer reduces social costs. Nevertheless, the social costs of rent-seeking consistently exceed predicted levels. Moreover, individual bidding, especially by buyers, deviates markedly from Nash predictions.     

Restoring trust in the police: Why female officers reduce suspicions of corruption

Recent studies show a clear link between women in government and reduced concerns about corruption. Until now, it remains unclear which underlying attitudes about women explain the perception that they will reduce corruption. Using a survey question about adding women to a police force, with an embedded experimental treatment, we examine three distinct stereotypes that might explain the power of women to reduce concerns about corruption: gender stereotypes of women as more ethical and honest, the perception of women as political outsiders, and beliefs that women are generally more risk averse. We find that people do perceive women as more effective at combating corruption, and these perceptions are greatly enhanced when information about women's outsider status and risk aversion is provided.     

On the limits to rent-seeking waste

The general equilibrium framework developed in this paper for analyzing the limits to rent-seeking waste goes beyond the existing literature by incorporating tax-financed, public subsidies and rent-protecting activities into a rent-seeking environment. We show that the limits to rent-seeking waste depend on the extent to which government subsidizes rent seekers and rent defenders through tax-financed grants, contracts and favors. As observed by Tullock (1967), the diversion of resources toward efforts to acquire a monopoly rent causes a social waste in addition to the excess burden of monopoly pricing measured by the Harberger triangle. In the absence of government subsidies to rent-seeking and under competitive conditions, this additional waste cannot exceed the maximum monopoly rent attainable. However, if government subsidizes expenditures on rent-seeking, then the additional waste can exceed the Tullock rectangle of monopoly rent and, in the limit, equal the economy's maximum potential social surplus.Rent avoidance expenditures reduce the rent to be captured and thus discourage rent-seeking. If rent avoidance is a relatively efficient mechanism for transferring consumer surplus to rent granters, then rent-seeking expenditures are displaced by less wasteful expenditures on rent defending. As a result, under competitive conditions, unsubsidized demand for private rent protection may be socially efficient. Nonetheless, the upper limit to rent-seeking waste depends on constitutionally determined maximum rates of public subsidies to rent-seeking and rent-avoidance activities.     

The number of rent-seekers and aggregate rent-seeking expenditures: An unpleasant result

I examine a rent-seeking contest in which the winner gets a minimum rent but also gets an additional rent which is an increasing function of his lobbying expenditure. I give real-world examples of such rent-seeking competitions. Contrary to the standard result in the rent-seeking literature, I obtain the perverse result that aggregate rent-seeking expenditures may be inversely related to the number of rent-seekers. However, I note that even if this result holds, the cost of administering rent-seeking competitions may imply that society is better off with fewer contenders than with an infinitely large number of contenders, although the optimal number may not be the smallest number.     

Strategic entry deterrence and terrorism: Theory and experimental evidence

Using a two stage rent-seeking framework, we present a simple model of strategic entry/terrorism deterrence and test the model using laboratory experiments. Our contest success function highlights the potential for strategic spillovers. The theory illustrates that, relative to a cooperative outcome, negative externalities lead to over-spending on deterrence and positive externalities lead to under-spending on deterrence. Our experimental results are broadly consistent; subjects in the negative externality treatment had higher expenditures. In contrast to theoretical predictions, participation decisions, while primarily driven by the probability of winning a contest, were influenced by a subject’s ability to participate in multiple contests.     

Crowding-out in productive and redistributive rent-seeking

This paper presents a general rent-seeking model in which participants decide on entry before choosing their levels of efforts. The conventional wisdom in the rent-seeking literature suggests that the rent dissipation increases with the number of potential participants and with their productivity of effort. In this paper, we show that this result of the rent-seeking literature is far from general and applies only when participants are relatively weak and enter the game with certainty. In the presence of strong competitors, the expected total dissipation actually decreases, since participation in the game is less frequent. We further consider the impact of competitors’ exit option, distinguishing between “redistributive rent-seeking” and “productive rent-seeking” situations. In redistributive rent-seeking, no social loss results from the fact that all competitors exit the race. In productive rent-seeking, instead, lack of participation creates a social loss (the “lost treasure” effect), since valuable rents are left unexploited. We show that the lost-treasure effect perfectly counterbalances the reduction in rent dissipation due to competitors’ exit. Hence, unlike redistributive rent-seeking, in productive rent-seeking the total social loss remains equal to the entire rent even when parties grow stronger or the number of players increases.     

Rent-seeking with scarce talent: A model of preemptive hiring

In a standard rent-seeking contest, players optimally employ resources in an attempt to obtain the rent. Typically, it is assumed that these resources may be hired at any desired level at some exogenous per-unit cost. In practice, these resources often consist of scarce, talented individuals. We model a rent-seeking contest with scarce talent and find that talent scarcity leads to preemptive hiring by the player receiving the larger rent. This player hires all available talent and wins the contest with probability 1. This is true even when the difference in rents is small.     

Rent-seeking with non-identical sharing rules

The primary object of this paper is to examine the role of differential sharing rules within a collective rent-seeking setting on the possible non-existence of Nash equilibrium. Focusing on groups that distribute part of the rent equally among their members and the residual according to relative effort, we show that in rent-seeking societies applying the two polar sharing rules equilibrium never exists. In the general case where groups apply different but not necessarily the polar sharing rules, we study the relationship between group variability in distributing rents and the problem of non-existence of equilibrium in the rent-seeking game.     

The thrill of victory,the agony of defeat

This paper presents experimental evidence from a rent-seeking exercise where the highest bidder wins the rent, but all bidders, including the winner, lose their wagers. This exercise closely resembles the rent-seeking dilemma facing agents in many settings. There are two main conclusions from the results. First, there is a tendency towards overdissipation of the rent. Second, some individuals are willing to pay more for a rent than its face-value would warrant. We attribute this phenomenon to a “thrill of victory” effect.     

寻租与反寻租:一个理论模型

本文试图对国内学术界偏好使用却又屡被误用的寻租理论作出学术澄清.本文认为,完整、准确的寻租理论应由如下四个命题组成:1.市场主体价值指向的租金非仅一种而是有三种,即分别由创新原因、自然原因和管制原因引致的垄断租金;2.市场主体追求创新租金的寻利行为是自由竞争条件下的正和博弈,而其追逐管制租金的寻租行为则是在不完全竞争条件下的负和博弈;3政府进行制度创新,引导市场主体从寻租走向寻利,可以实现反寻租的目的;4.由于政府同样具有理性经济人特征,通过制度创新进行反寻租有可能引起新的寻租,陷入反寻租的悖论.     

Rent-seeking and pesticide legislation

This paper provides a test of the Appelbaum and Katz (1987) rent-seeking model, in which rents are endogenous. The Appelbaum-Katz model is theoretically modified to correspond to our empirical application, in which rent-seeking and rent-avoiding coalitions are attempting to influence legislators' votes on pesticide regulations. Probit estimations are used to analyze the legislators' votes on two bills to amend pesticide legislation (a proxy for rent). Empirical results generally support the rent-seeking determinants identified in the model. Tobit estimation is used to investigate campaign contributions by the coalitions to the legislators. These contributions are a proxy for rent-seeking activities. Again, the model is supported.