The effects of group composition in a strategic environment: Evidence from a field experiment

Recent theoretical and empirical studies have explored the effect of group membership and identity on individual decision-making. This line of research highlights that economic models focusing on the individual as the sole entity in the decision-making environment potentially miss critical features. This study takes this literature in a new direction by overlaying a field experiment onto a setting where groups have arisen naturally. Our experimental laboratory is large open air markets, where we are able to examine the effects of group membership on seller׳s collusive behavior as measured by prices and surplus allocations. This permits us to explore strategic implications of group composition. Empirical results illustrate the importance of group composition on pricing decisions, and show that deviations from Nash equilibrium are crucially related to group membership.     

The value of reputation on eBay: A controlled experiment

We conducted the first randomized controlled field experiment of an Internet reputation mechanism. A high-reputation, established eBay dealer sold matched pairs of lots—batches of vintage postcards—under his regular identity and under new seller identities (also operated by him). As predicted, the established identity fared better. The difference in buyers’ willingness-to-pay was 8.1% of the selling price. A subsidiary experiment followed the same format, but compared sales by relatively new sellers with and without negative feedback. Surprisingly, one or two negative feedbacks for our new sellers did not affect buyers’ willingness-to-pay. JEL Classification D82 · L14 · Z13     

腐败对外国直接投资影响的实证分析

本文依据世界106个国家的截面数据．分析了腐败对外国直接投资（FDI）的影响。研究结果表明，腐败与FDI之间存在显著的负相关。但是，腐败对FDI的负面影响可以在一定程度上被诸如东道国经济开放和政治稳定等积极因素所抵消。     

Corruption perceptions vs. corruption reality

This paper examines the accuracy of corruption perceptions by comparing Indonesian villagers' reported perceptions about corruption in a road-building project in their village with a more objective measure of ‘missing expenditures’ in the project. I find that villagers' reported perceptions do contain real information, and that villagers are sophisticated enough to distinguish between corruption in a particular road project and general corruption in the village. The magnitude of the reported information, however, is small, in part because officials hide corruption where it is hardest for villagers to detect. I also find that there are biases in reported perceptions. The findings illustrate the limitations of relying solely on corruption perceptions, whether in designing anti-corruption policies or in conducting empirical research on corruption.     

Petty corruption

This paper analyzes a petty corruption model in which the entrepreneur’s type is drawn from an absolutely continuous probability distribution function F over [0, 1], and perfect Bayesian equilibrium is adopted as the solution concept for a one-stage game. In the one-stage game, if there is more than one bureaucrat, no project is approved with a strictly positive probability. For an infinitely repeated game, I show that the single window policy strictly increases the social benefits in a socially optimal equilibrium. I would like to thank Mukul Majumdar for valuable guidance and encouragement. I am also grateful to Kaushik Basu, Fernando Vega-Redondo, an anonymous referee, seminar participants at the international meeting for public economic theory (PET07) and especially Ani Guerdjikova and Roy Radner for helpful comments. Thanks are due to Hideaki Goto and Eunkyeong Lee for useful conversation.     

The impact of liberalization on bureaucratic corruption

Liberalization increases the number of goods available for consumption within a country. Since bureaucrats value variety, this raises the marginal utility of accepting a bribe. This “benefit effect” is counteracted by an increasing “cost effect” from corruption deterrence activities that arise due to greater international pressure to curb corruption. The interaction of these two effects can lead to a non-monotonic relation between liberalization and corruption. Moreover, pre-commitment to deterrence activities is shown to be more effective in controlling corruption. Empirical evidence supports the existence of a non-monotonic relation between economic openness and corruption among developing countries.     

Entrepreneurship,trust and corruption

I propose a theoretical model where trust towards strangers is a channel through which institutions determine economic outcomes, in particular, entrepreneurship and corruption. More importantly, I show that the role of trust has been overlooked since high levels of trust do not always enhance desirable economic outcomes. Trust helps individuals to participate in economic exchanges aligned with social welfare, but it also facilitates individuals to cooperate for the achievement of corrupt deals. Under this more general view of trust, the model generates a non-trivial new prediction at the individual level. Specifically, the individual-level relationship between honesty and trust changes depending on the institutional quality of a country. Dishonest individuals are the more trusting individuals in countries with poor institutions, and the less trusting in countries with good institutions. Using individual-level data of 80 countries from the World Value Survey and the European Values Study, I present empirical evidence in support of this prediction.     

Political uncertainty and international corruption

This article uniquely considers influences of political uncertainty on corruption. Political uncertainty disturbs existing corrupt (and legal) contractual relations inducing greater corrupt activity to strengthen existing alliances and foster new ones. Results across two measures of cross-national corruption show that political assassinations increase corruption in different variations and time periods, and a general index of political instability mostly has the same effect. The influences of other factors on corruption are in general accord with the literature. These findings are generally robust to consideration of alternate dimensions of political uncertainty.     

Fixed price plus rationing: an experiment

This paper theoretically and experimentally explores a fixed price mechanism in which, if aggregate demand exceeds supply, bidders are proportionally rationed. If demand is uncertain, in equilibrium bidders overstate their true demand in order to alleviate the effects of being rationed. This effect is the more intense the lower the price, and bids reach their upper limit for sufficiently low prices. In the experiment we observe a significant proportion of equilibrium play. However, subjects tend to overbid the equilibrium strategy when prices are high and underbid when prices are low. We explain the experimental evidence by a simple model in which the probability of a deviation is decreasing in the expected loss associated with it.

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Electronic Supplementary Material  The online version of this article () contains supplementary material, which is available to authorized users.      

Harassment, corruption and tax policy: reply

Saha [Eur. J. Polit. Econ. (2003)] has raised some points about our paper [Eur. J. Polit. Econ. 16 (2000) 75]. We herewith reply to these points.     

The effect of corruption on capital accumulation

This paper examines the effect of corruption in infrastructure development as well as in capital and labor markets, on capital accumulation and output in an overlapping generations model. Corruption affects income redistribution, government expenditures on infrastructure, firms’ incentive to invest, and workers’ incentive to supply labor. An increase in corruption in infrastructure development decreases capital accumulation and output if the decrease in the savings of ordinary workers is sufficiently large. An increase in corruption in the capital market decreases capital accumulation and output. An increase in corruption in labor market decreases capital accumulation and output when labor supply is completely inelastic. Simulation results based on plausible parameter values indicate that an increase in corruption in the labor market will also reduce labor supply, capital accumulation and output.      

Hidden benefits of reward: A field experiment on motivation and monetary incentives

We conducted a field experiment in a controlled work environment to investigate the effect of motivational talk and its interaction with monetary incentives. We find that motivational talk improves performance only when accompanied by performance pay. Moreover, performance pay reduces performance unless it is accompanied by motivational talk. These effects also carry over to the quality of work. Performance pay alone leads to more mistakes. Adding motivational talk makes the difference. In treatments with performance pay, motivational talk increases output by about 20 percent and reduces the ratio of mistakes by more than 40 percent.     

The interaction effect of economic freedom and democracy on corruption: A panel cross-country analysis

This paper examines the effects of economic freedom, democracy and its interaction term on controlling corruption. Interactive results indicate that economic freedom and democracy significantly combat corruption. Economic freedom reduces corruption in any political environment. Democracy increases corruption when economic liberalization is low.     

Common political culture: Evidence on regional corruption contagion

Although there are indications of common regional corruption characteristics, empirical studies of corruption have assumed that influences on corruption are country-specific. In this paper we report evidence based on a cross-section of 123 economies confirming that, with few specific exceptions, corruption is a regional phenomenon. Institutional change that reduces corruption in one country affects, therefore, neighboring countries.     

Evidence on corruption as an incentive for foreign direct investment

This paper assesses the relationship between corruption and inward foreign direct investment (FDI). Previous research has presumed that corruption directly enters the cost function of multinationals, suggesting a negative relationship between corruption and FDI. For a sample of 73 developed and less developed countries and the time period 1995–1999, we find a clear positive relationship between corruption and FDI. Corruption is thus a stimulus for FDI.     

Competition and corruption in an agency relationship

The paper reconsiders the relationship between competition and corruption in a model, where corruption has solid informational foundations and where the regulatory response to the possibility of corruption is taken into account. It is shown that the effect of greater competition on corruption depends on the complementarity or substitutability of the two instruments available to decrease information rents, namely low powered incentives and greater competition. The paper concludes with a brief empirical exploration of the relationship between competitiveness and corruption on African data.     

Natural resources, democracy and corruption

We study how natural resources can feed corruption and how this effect depends on the quality of the democratic institutions. Our game-theoretic model predicts that resource rents lead to an increase in corruption if the quality of the democratic institutions is relatively poor, but not otherwise. We use panel data covering the period 1980-2004 and 124 countries to test this theoretical prediction. Our estimates confirm that the relationship between resource rents and corruption depends on the quality of the democratic institutions. Our main results hold when we control for the effects of income, time varying common shocks, regional fixed effects and various additional covariates. They are also robust across different samples, and to the use of various alternative measures of natural resources, democracy and corruption.     

Quantifying corruption by a human capital earnings equation

This paper uses a human capital earnings equation to quantify administrative corruption in the public sector. Regression analyses are conducted based on information from surveys administered to public officials in Albania. After accounting for officials’ characteristics, e.g., schooling, experience, gender, type of agency, and public and private sectors’ features, we deduce that the administrative corruption was on average 2.6× the officials’ current salary in Albania, which is equivalent to 16.7% of the country’s GDP.

Inter-ethnic trust and reciprocity: results of an experiment with small businessmen

We investigate inter-ethnic trust and reciprocity by having subjects from distinct ethnic origins play the trust game [Games Econom. Behav. 10 (1995) 122]. The participants in the experiment are male small businessmen of Turkish or Belgian ethnic origin, all of whom have a business in the same city (Ghent, Belgium). Our main finding is that the average levels of trust and reciprocity are independent of ethnic origin and, moreover, independent of the ethnic origin of the opposite party.     

Do rapid political and trade liberalizations increase corruption?

Corruption scandals seem to abound in countries that have undergone reform. However, there has been no study of whether different combinations of reforms cause an increase in corruption. Theory provides some guidance as to the direction of causality—on the one hand, reforms make politicians accountable to voters as well as introducing more competition, which should decrease corruption. On the other hand, reforms may not be credible, which provides for an incentive for corruption. This paper uses the numerous cases of political and economic liberalizations that occurred in the 1980s and 1990s to examine this issue. The findings are that undertaking both types of reforms in rapid succession leads to a decrease in corruption, while countries that liberalized more than 5 years after democratizing experienced an increase in corruption.