Using Elasticities to Derive Optimal Income Tax Rates

This paper derives optimal income tax formulas using compensated and uncompensated elasticities of earnings with respect to tax rates. A simple formula for the high income optimal tax rate is obtained as a function of these elasticities and the thickness of the top tail of the income distribution. In the general non-linear income tax problem, this method using elasticities shows precisely how the different economic effects come into play and which are the key relevant parameters in the optimal income tax formulas of Mirrlees. The optimal non-linear tax rate formulas are expressed in terms of elasticities and the shape of the income distribution. These formulas are implemented numerically using empirical earning distributions and a range of realistic elasticity parameters.     

Disentangling and quantifying market participant volatility contributions

Thanks to the access to labeled orders on the CAC 40 index future provided by Euronext, we are able to quantify market participants contributions to the volatility in the diffusive limit. To achieve this result, we leverage the branching properties of Hawkes point processes. We find that fast intermediaries (e.g. market maker type agents) have a smaller footprint on the volatility than slower, directional agents. The branching structure of Hawkes processes allows us to examine also the degree of endogeneity of each agent behavior, and we find that high-frequency traders are more endogenously driven than other types of agents.     

Political versus economic institutions in the growth process

After a decade of research on the relationship between institutions and growth, there is no consensus about the exact way in which these two variables interact. In this paper we re-examine the role that institutions play in the growth process using data for developed and developing economies over the period 1975–2005. Our results indicate that the data is best described by an econometric model with two growth regimes. Political institutions are the key determinant of which regime an economy belongs to, while economic institutions have a direct impact on growth rates within each regime. These findings support the hypothesis that political institutions are one of the deep causes of growth, setting the stage in which economic institutions and standard covariates operate.     

Urban squatting and community organization in developing countries

It is estimated that up to 30–35 percent of the total urban population of the Third World (about 185 million people) live in squatter settlements. This paper presents, from an economic perspective of tenure choice under uncertainty, a unified and consistent theoretical framework of this phenomenon, which has heretofore been studied mainly by other social scientists. The model is able to explain why land invasions occur. Furthermore, it provides some insights as to why the number of squatters in an urban area depends on a squatter community's ability to form coalitions to fully protect its members' rights. It is shown in the paper that, if a community is successful in controlling its size, government efforts which are meant to reduce the number of squatters may lead to the opposite results. In particular, the imposition of heavier fines or the increase of government expenditures on eviction activity (threat campaigns, eviction in other jurisdictions, etc.) will likely lead to an increase in the optimal number of squatters, unless the decline in expected utility caused by these efforts is so great that squatting no longer becomes viable at any community size.     

Intellectual capital and innovativeness in software development firms: the moderating role of firm size

Abstract

We examine the effect of intellectual capital on firms’ innovativeness and the moderating role of firm size in software development firms in Kenya. Using moderated regression analysis, we found support for the proposition that human and social capital enhance firms’ innovativeness. We did not, however, find any significant effect of organizational capital on firms’ innovativeness. The results from the moderated regression suggest that the smaller the firm, the stronger the influence of intellectual capital on firms’ innovativeness. The results therefore indicate that human and social capital are critical in the innovation process and so firms that neglect these capitals are unlikely to realize the potential to innovate particularly in software development firms.     

Japanese Foreign Direct Investment in the UK Electronic Industry: The Eclectic Approach

This article analyses the combined effects of Japanese firms' ownership and location advantages on the size of foreign direct investment (FDI). The size of FDI is measured by two proxies, the firm's employment level and its total assets. Econometric models are estimated. The estimated regression models show that the parent company's firm-specific resources and the external economies in the located region determine the flow of FDI at the time of entry of Japanese electronic firms in the UK. This result shows that empirical analysis on FDI flows should combine both the ownership and location advantages, as suggested by Dunning's eclectic paradigm.     

Remittances,investment and growth in sub-Saharan Africa

Several studies have examined the impact of remittances on economic growth, yet the results remain largely inconclusive. I present an analysis of the relationship between remittances and per capita growth, and investigate whether the impact of remittances on growth is through capital accumulation or other mechanisms. Using data for sub-Saharan African countries and dynamic empirical models, I find that there is a positive relationship between remittances and growth, as well as a positive interaction effect between remittances and financial depth on growth. The findings also reveal threshold values for two main indicators of financial development, above which the total effect of remittances on growth is positive. The results further provide evidence for the existence of an investment channel through which remittances affect growth, and indirect evidence that remittances contribute towards a stable macroeconomic environment, and hence, growth, through a consumption smoothing effect.