Diversity and innovation

Although the effect of culture on national innovation levels is well-established, previous literature assumes cultural homogeneity within a nation. In this article we analyse two aspects of diversity – ethnic and values – and their impact on national innovation output. We show that ethnic diversity or fractionalization and values diversity are distinct and while the former has a negative effect on innovation, the latter contributes positively. However, countries are bound to have both types of diversity. We find that countries that are ethnically homogenous but diverse in values orientation are the best innovators.     

Ethnic Diversity,Civil War and Redistribution*

In a game‐theoretic framework, we analyse the circumstances under which self‐enforcing redistribution and power‐sharing coalitions can be used to peacefully resolve ethnic conflict. The existence of a pacific equilibrium depends crucially on ethnic diversity (the number of ethnic groups). The risk of civil war is comparatively high at intermediate levels of ethnic diversity. The risk is low if a society is either very homogeneous or very diverse. Predictions of the model are consistent with evidence on the incidence of civil war.     

Economic growth,corruption and tax evasion

In this paper, we explore tax revenues in a regime of widespread corruption in a growth model. We develop a Ramsey model of economic growth with a rival but non-excludable public good which is financed by taxes which can be evaded via corrupt tax inspectors. We prove that the relationship between the tax rate and tax collection, in a dynamic framework, is not unique, but is different depending on the relevance of the “shame effect”. We show that in all three cases — “low, middle and high shame” countries, the growth rate increases as the tax rate increases up to a threshold value, after which the growth rate begins to decrease as the tax rate increases. But, for intermediate tax rates, the rate of growth for “low shame” countries is lower than that of “uniform shame” countries which is, in turn, lower than that of “high shame” countries. This happens because the growth rate is more sensitive to variations of t in an honest country rather than in a corrupt country.     

ETHNIC DIVERSITY AND TRUST

Using data from U.S. states, I investigate the relationship between ethnic diversity and trust. I find a negative relationship between ethnic polarization and trust and a U‐shaped relationship between ethnic fractionalization and trust. According to my estimations, (a) going from an ethnic polarization index (PI) of 0 to an ethnic PI of 1 decreases trust by almost 12% points; and (b) trust is minimized when the ethnic fractionalization index is equal to 0.34. (JEL D74, J15, Z13)     

INSTABILITY AND THE INCENTIVES FOR CORRUPTION

We investigate the relationship between corruption and political stability, from both theoretical and empirical perspectives. We propose a model of incumbent behavior that features the interplay of two effects: a horizon effect , whereby greater instability leads the incumbent to embezzle more during his short window of opportunity, and a demand effect , by which the private sector is more willing to bribe stable incumbents. The horizon effect dominates at low levels of stability, because firms are unwilling to pay high bribes and unstable incumbents have strong incentives to embezzle, whereas the demand effect gains salience in more stable regimes. Together, these two effects generate a non-monotonic, U-shaped relationship between total corruption and stability. On the empirical side, we find a robust U-shaped pattern between country indices of corruption perception and various measures of incumbent stability, including historically observed average tenures of chief executives and governing parties: regimes that are very stable or very unstable display higher levels of corruption when compared with those in an intermediate range of stability. These results suggest that minimizing corruption may require an electoral system that features some re-election incentives, but with an eventual term limit.     

Fractionalization

We provide new measures of ethnic, linguistic, and religious fractionalization for about 190 countries. These measures are more comprehensive than those previously used in the economics literature and we compare our new variables with those previously used. We also revisit the question of the effects of ethnic, linguistic, and religious heterogeneity on the quality of institutions and growth. We partly confirm and partly modify previous results. The patterns of cross-correlations between potential explanatory variables and their different degree of endogeneity makes it hard to make unqualified statements about competing explanations for economic growth and the quality of government. Our new data, which features the underlying group structure of ethnicities, religions and languages, also allows the computation of alternative measures of heterogeneity, and we turn to measures of polarization as an alternative to the commonly used index of fractionalization.     

The effect of ethnic diversity on the participation in social groups: Evidence from trade unions

This paper advances the hypothesis that individuals in more ethnically fragmented societies, participate less in social groups. More precisely, the empirical analysis places the spotlight on trade unions and investigates whether ethnic diversity affects the decision of workers to participate in them. The analysis takes place along two layers: (a) country-level and (b) individual-level. First, building on a set of innovative instruments derived from the parasite-stress theory of values and sociality, our country-level analysis seeks to exploit exogenous sources of variation in ethnic diversity and establish a convincing causal relationship between ethnic diversity and trade union density across countries. In turn, we employ individual-level data from the European Social Survey (ESS) and investigate whether immigrants who cοme from more ethnically fragmented societies participate less in trade unions in their European countries of residence. Consistent with the prediction of the theory, both layers of the empirical analysis provide robust evidence of a negative, sizeable and highly significant effect of ethnic diversity on the participation in trade unions.     

Ethnicity, Politics and Economic Performance

The paper investigates the effects of ethnic diversity on economic performance. Previous studies have found that diversity has various detrimental microeconomic effects, tending to reduce public sector performance, and has large detrimental effects on the overall growth rate. I develop a simple model of the effect of ethnic diversity on a government decision problem in which there is a tradeoff between growth and distribution, in the contexts of democracy and dictatorship. I find that in democracy ethnic diversity has no effect upon the decision, whereas in dictatorship ethnic diversity leads to a government choice which reduces the growth rate. I then test these propositions on two data sets. The first is for 94 countries over the period 1960–1990. I find that whether diversity adversely affects overall economic growth depends upon the political environment. Diversity is highly damaging to growth in the context of limited political rights, but is not damaging in democracies. The second is for World Bank projects in 89 countries. I find that the same relationship between diversity and democracy affects the proportion of projects which are successful.     

Persistence of gender inequality: the role of ethnic divisions

Gender inequality remains a fundamental challenge for global policymakers given that it has detrimental implications for growth and human capital formation. However, studies examining the roots of gender inequality, and what determines the level of inequality are relatively scant. In this study, we seek to contribute to the literature that examines the roots of gender inequality and thus, our objective is to examine the impact of ethnic diversity on gender inequality. We argue that the level of ethnic diversity within a country plays a role in either deepening or bridging gender gaps. Using indices of ethnic fractionalization, we examine the effects of ethnic diversity on measures of gender inequality such as the gender inequality index, and its associated dimensions of empowerment, educational attainment and labour market outcomes. Our evidence suggests that ethnic diversity widens existing gender gaps. We discuss several mechanisms through which ethnic diversity may lead to the increase of existing gender gaps, and lay out various policy approaches to address gender inequality.     

族群多样性与地方经济增长—来自中国城市层面的证据

族群多样性的经济影响及其发生机制,是经济学中一个方兴未艾的前沿研究领域.文章利用全国人口普查数据和抽样调查资料,构建了中国300多个城市族群多样性的面板数据,通过计量分析发现,高的族群多样性显著降低了地方经济增长率.在考察了测量指标的影响和内生性问题后,结论依然稳健.通过对影响机制的探讨,文章发现:高的族群多样性显著增大了语言沟通成本,降低了私有部门投资率;另一方面,公有部门投资率不受族群多样性的影响,人均中央财政转移支付和族群多样性显著正相关,这两者缓解了族群多样性的不利影响.以上发现,一方面为族群多样性经济影响的研究提供了新的实证证据;另一方面也为中国地方经济增长的差异性提供了一个新的解释,并衍生出新的学术课题和政策意涵.     

Corruption in America

We use a data set of federal corruption convictions in the U.S. to investigate the causes and consequences of corruption. More educated states, and to a smaller degree richer states, have less corruption. This relationship holds even when we use historical factors like Congregationalism in 1890 as an instrument for the level of schooling today. The level of corruption is also correlated with the level of income inequality and racial fractionalization, and uncorrelated with the size of government. There is a weak negative relationship between corruption and economic development in a state. These results echo the cross-country findings, and support the view that the correlation between development and good political outcomes occurs because education improves political institutions.     

The roots of ethnic diversity

The level of ethnic diversity is believed to have significant consequences for economic and political development within countries. In this article, we provide a theoretical and empirical analysis of the determinants of ethnolinguistic diversity in the world. We introduce a model of cultural and genetic drift where new groups endogenously emerge among peripheral populations in response to an insufficient supply of collective goods. In line with our model, we find that the duration of human settlements since prehistoric times has a strong positive association with current levels of ethnolinguistic diversity. Diversity is further negatively correlated with the length of modern state experience and with distance from the equator. Our results are thus consistent with both ??evolutionary?? and ??constructivist?? hypotheses of ethnolinguistic fractionalization.     

Tax revenues, fiscal corruption and “shame” costs

In this paper we explore tax revenues in a regime of widespread fiscal corruption in a static framework. We prove that the relationship between the tax rate and tax revenues depends on the relevance of the “shame effect” of being detected in a corrupt transaction. In countries with a “low shame” effect, tax revenues grow as the tax rate increases. Moreover, there is a critical tax rate where the growth rate of tax revenues begins to reduce. In countries with a high “shame effect” tax revenues increase up to a threshold value and then decrease.     

Corruption,growth, and growth volatility

While the existing studies focus on the corruption–growth relationship, this paper introduces a new focus involving corruption and growth volatility. The Ehrlich–Lui (1999) framework provides the theoretical background of the paper, which produces testable hypotheses regarding the corruption–growth and the corruption–growth volatility relationship. The cross-section dataset that is used in the empirical analysis contains 121 developed and developing countries. In terms of the relationship between the governance-related variables and growth rates, only corruption control and government effectiveness significantly and adversely affect the average growth rate. Regarding the relationship between growth volatility and governance-related variables, the results suggest that higher corruption control, expropriation risk control, government effectiveness, and government consumption decrease growth volatility.     

Does cultural diversity increase the rate of entrepreneurship?

In the economic development literature, cultural diversity (for example, ethnolinguistic fractionalization) has been shown to have a negative impact on economic outcomes in many underdeveloped countries. We hypothesize that the impact of diversity on economic performance depends on the quality of a country's institutions. Under bad institutions diversity leads to conflict and expropriation, while under good institutions diversity leads to economic progress. A culturally diverse society or interaction among different cultures encourages exchange of, and competition between ideas and different world views. Under good institutions, this amalgamation of ideas and views leads to greater entrepreneurial initiatives. We show that higher levels of cultural diversity increase the rate of entrepreneurship in the presence of good institutions using evidence from the USA.     

Local exposure to toxic releases: Examining the role of ethnic fractionalization and polarisation

This paper examines the role played by community characteristics in influencing local exposure to toxic releases, focusing specifically on ethnic fractionalization and polarisation. In contrast to the previous literature, this study argues that it is the fractionalization and/or polarisation of ethnic groups that is the relevant consideration, rather than the population share of ethnic minorities, since such ethnic divisions may significantly increase the difficulty of coordinating community action. Using toxic release data for the periods 1990 to 1995 and 2000 to 2005 we find that measures of ethnic divisions have a positive relationship with toxic releases. This finding persists across a range of robustness exercises.     

Cultural diversity and economic growth: Evidence from the US during the age of mass migration

We exploit the large inflow of immigrants to the US during the 1870–1920 period to examine the effects that within-county changes in the cultural composition of the US population had on output growth. We construct measures of fractionalization and polarization to distinguish between the different effects of cultural diversity. Our main finding is that increases in cultural fractionalization significantly increased output, while increases in cultural polarization significantly decreased output. We address the issue of identifying the causal effects of cultural diversity by using the supply-push component of immigrant inflows as an instrumental variable.     

Inflation, Inflation Variability, and Corruption

We present a model where agents can inflate the cost of goods needed to start an investment project and inflation variability increases monitoring costs. We show that inflation variability can lead to higher corruption and lower investment. We document a positive relationship between corruption and inflation variability in a sample of 75 countries. The effect is robust to the inclusion of country fixed effects, other controls, and 2SLS estimation. The results are economically significant: a one standard deviation increase in inflation variance from the median increases corruption by 12 percent of a standard deviation and reduces growth by 0.33 percentage points. Our paper highlights a new channel through which inflation reduces investment and growth, thus bridging the perception gap over the costs of inflation between economists and the public. We also find evidence that political competition reduces corruption and that corruption is pro-cyclical.     

Explaining fiscal decentralization and the role of ethnic Diversity

This paper considers the causes of fiscal decentralization with a specific focus on the role of ethnic diversity. To do so, I employ an instrument for ethnic diversity based on the origin of anatomically modern human life. Using two measures of decentralization that capture decision making autonomy and accounting for the depth of divisions between ethno-linguistic groups using the structure of language trees, I find that ethnic diversity has a positive effect on the degree of decentralization. It is the amount of fractionalization towards the leaves of the trees, where groups are more numerous and less distinct, that drive decentralization.     

Transaction costs and economic growth under common legal system: State‐level evidence from Mexico

This paper examines the contribution of administrative and procedural transaction costs to economic growth under common legal system. We show that administrative and procedural costs vary quite a lot even within the institutional environment sharing the common legal system. States with low‐cost business registration, low‐cost access to property rights and greater judicial efficiency tend to have consistently higher growth. The established effects are robust to alternative model specifications, heterogeneity bias, and to a variety of control variables that might confound the effects of administrative and procedural costs on growth. Such differences in costs are far from being trivial as we show that these within‐system differences might be instrumental in influencing economic growth. Lower administrative and procedural costs induce growth by increasing investment rate, lowering unemployment rate, encouraging labor supply and improving total factor productivity. In the counterfactual scenario, the transition from high‐cost to low‐cost regime is associated with substantial growth and development gains over time. By exploiting the variation in the disease environment, ethnic fractionalization and historical urbanization, we show that the negative effect of rising procedural and administrative costs on growth and development appears to be causal.