This paper proposes an evaluation of the main empirical approaches used in the literature to estimate the productive contribution of public capital stock to private factors productivity and growth. Our analysis is based on the replication of these approaches on pseudo samples generated using a...

This paper proposes an extension of the Granger (1969) causality definition to panel data models with fixed coefficients. Given the heterogeneity of the data generating process, four definitions of causality relationships are proposed. A procedure of nested tests is then defined and a...

In many poor countries, the problem is not that governments do not invest, but that these investments do not create productive capital. So, the cost of public investments does not correspond to the value of the capital stocks. In this paper, we propose an original non parametric approach to...

The authors provide various estimates of the government net capital stocks for a panel of 26 developing countries over the period 1970-2001. Two kinds of internationally comparable series of public capital stocks are presented. The first estimates are based on the standard perpetual inventory...

The market portfolio efficiency remains controversial. This paper develops a new test of portfolio mean-variance efficiency relying on the realistic assumption that all assets are risky. The test is based on the vertical distance of a portfolio from the efficient frontier. Monte Carlo...

This paper investigates the links between price returns for 25 commodities and stocks over the period from January 2001 to November 2011, by paying a particular attention to energy raw materials. Relying on the dynamic conditional correlation (DCC) GARCH methodology, we show that the...