Maybe because of the inconclusive nature of the results on the impact of public capital on output at the regional level, the issue of the possible existence of the regional spillovers from public capital formation has received little attention. The objective of this paper is to provide evidence on the possible existence of such spillovers. We consider the case of Spain and its seventeen regions. Our methodological approach consists in estimating an aggregate VAR model for Spain as well as seventeen region-specific VAR models in which both capital installed in the region and capital installed outside the region are allowed to play a role in enhancing regional output. The estimation results can be summarized as follows. The aggregate effects of public capital formation in Spain are important. They cannot, however, be captured in their entirety by the direct effects in each region from public capital installed in the region itself. When for each region both the capital installed in the region and the capital installed outside the region are considered the total disaggregated effect from the seventeen regional models are very much in line with the aggregate results. Furthermore, the aggregate effect seems to be due in almost equal parts to the direct and spillover effects of public capital formation. Ultimately, this paper establishes the relevance of both capital installed in each region and spillover effects in the understanding of the regional decomposition of the aggregate effects of public capital formation. In doing so it opens the door to some tantalizing and potentially highly charged research issues in terms of the determination of the optimal location of public investment projects.JEL Classification: C32, H54, and R53.

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We examine the impact of structural and cohesion funds on regional disparities within EU countries over the period 1995^2006. We find that structural funds have reduced regional disparities over this period. Our empirical estimates also suggest that the effect of structural funds on regional disparities is potentially reversed above some level of transfer intensity (approximately 1.6% of country gross domestic product). This has implications for the desirable allocation of the funds across countries especially since, in the current programming period (2007^13), all the new member states of the Union except for Cyprus and Malta have a transfer intensity which exceeds this threshold.

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Introduction A range of empirical studies have attempted to evaluate the impact of fiscal or political decentralization on a wide range of public policy variables. By way of illustration, scholars have studied the economic implications of decentralization for growth (