Juan M. Ruiz

Do trade and financial linkages foster business cycle synchronization in a small economy

We estimate a system of equations to analyze whether bilateral trade and financial linkages influence business cycle synchronization directly and/or indirectly. Our paper builds upon the existing literature by using bilateral trade and financial flows for a small, open economy (Spain) as benchmark for the results, instead of the US as generally done in the literature. We find that both the similarity of productive structure and trade links promote the synchronization of cycles. However, bilateral financial links are inversely related to the co-movement of output. This might point to financial integration allowing an easier transfer of resources between two economies, which could enable their decoupling, as predicted by a standard model of international business cycles. Both the effects of trade and financial links on output synchronization are statistically significant and economically relevant.

The Wise Use of Dummies in Gravity Models: Export Potentials in the Euromed Region

In this paper, we estimate a gravity equation properly accounting for omitted exporter and importer’s overall trade resistance, through country yearly dummies for exporter and importer countries. We find that the omission of time varying multilateral trade resistance terms in the estimation of a gravity equation introduces important biases in the results, although correcting them means we can only compute differences between actual and predicted export shares, instead of levels, as usually done. An application to the calculation of trade potentials in the Euromed region (Southern and Eastern Mediterranean countries) shows that the omission of time varying multilateral trade resistance terms greatly influences the computation of export potentials as well as the estimated effect of signing a free trade agreement. Overall, we find that, except for Algeria, Jordan and Lebanon, Euromed countries’ share of exports to the EU as a whole is at, or slightly above, those predicted by a correctly specified gravity model, although the share of exports to some individual EU countries is significantly below the predictions of the gravity model. Except for those three countries, we find significant opportunities for export growth to the US, instead.

International Trade Policy towards Monopoly and Oligopoly

This paper highlights the importance of product differentiation and endogenous R&D in determining the optimal R&D policy, in a model where investment in cost reducing R&D is committed before firms compete in a differentiated-goods third-country export market. R&D is always taxed in oligopolies for high degrees of product differentiation. For lower degrees of product differentiation the duopoly is subsidized or the government remains inactive. In contrast, the monopoly is always subsidized. The government with a duopoly may be active or inactive depending on the degree of product differentiation. Thus, we may observe a reversal in the sign of the optimal R&D policy if the degree of product differentiation changes or, alternatively, if there is a change in the number of firms. Similar qualitative results hold if trade policy uses output subsidies, instead of R&D promotion.

Cost Effectiveness of R&D and Strategic Trade Policy

This paper analyzes the incentives for governments to impose export subsidies when firms invest in a cost saving technology before market competition. Governments first impose an export subsidy or a tax. After observing export policy, firms invest in cost reducing R&D and subsequently compete in the market. Governments subsidize exports under Cournot competition. Under Bertrand competition, export subsidies are positive whenever R&D is sufficiently cost-effective at reducing marginal costs, and negative otherwise. The trade policy reversal found in models without endogenous sunk costs disappears if R&D is sufficiently cost-effective. Thus, output subsidies seem more robust than implied by the recent literature.

Cost effectiveness of R&D and the robustness of Strategic Trade Policy

This paper analyzes the incentives for governments to impose export subsidies when firms invest in a cost saving technology before market competition. Governments first impose an export subsidy or a tax. After observing export policy, firms invest in cost reducing R&D and subsequently compete in the market. Governments subsidize exports under Cournot competition. Under Bertrand competition, export subsidies are positive whenever R&D is sufficiently cost-effective at reducing marginal costs, and negative otherwise. The trade policy reversal found in models without endogenous sunk costs disappears if R&D is sufficiently cost-effective. Output subsidies are more robust than implied by the recent literature.

International Recycling Channels of Petrodollars

The continued rise in oil prices since 2002 has resulted in a significant increase in export revenue for oil exporting countries. This increase in the price of oil and other commodities means that OPEC countries and Russia have received, between 2003 and 2006, a windfall of 1.3 trillion dollars with respect to their export level in 2002. This paper analyzes, using the limited data available, the recycling of these resources back to the world economy through the trade channel, via higher imports, or the financial channel, via an increase in the net external asset position of these countries. Our results show that around 50% of the windfall revenue has been used to increase imports, while the rest has been directed towards international reserve accumulation and other improvements in the net asset position of these countries. Comparing the current oil price increase with previous ones, such as those resulting from the tightening of oil supply in the 70s, we find that the trade channel has been more important in the current episode than in previous ones. This can be attributed to (i) the perception of a more permanent increase in the price of oil in the context of rising demand, and (ii) the gradualism of the current oil price increase, which has allowed a stronger response from imports.