The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expressed in this paper are entirely those of the authors. They do not necessarily represent the views of the International Bank for Reconstruction and Development/World Bank and its affiliated organizations, or those of the Executive Directors of the World Bank or the governments they represent.

This study analyses trade flows in intermediate goods and services among OECD countries and with their main trading partners. Combining trade data and input-output tables, bilateral trade in intermediate goods and services is estimated according to the industry of origin and the using industry for the period 1995-2005. Trade in intermediate inputs takes place mostly among developed countries and represents respectively 56% and 73% of overall trade flows in goods and services. Gravity regressions indicate that in comparison to trade in final goods and services, imports of intermediates are more sensitive to trade costs and are less attracted by bilateral market size. Further findings are that the activities of multinational enterprises can be associated with higher trade flows of intermediate inputs and with a higher ratio of foreign to domestic inputs in using industries. Results from production function regressions and from a stochastic frontier analysis suggest that a higher share of imported inputs leads to productivity gains in domestic industries and reduces inefficiencies in the use of technology.trade policy, outsourcing, FDI, multinational enterprises, trade in intermediates, intermediate inputs, parts and components, trade and productivity, fragmentation, offshoring

Although spatial hypotheses are not new in the FDI literature, their examination in the dynamic context of the 'investment development path' (IDP) provides some new insights. In this paper, we examine proximity to markets at different stages of the IDP as a determinant of a country's own foreign direct investment (FDI) pattern. Our main contribution lies in the empirical estimation of the importance of spatial determinants for the emergence of inward and outward FDI. Our results support that distance to countries at higher stages up the IDP which are better integrated into the world FDI network, has a negative effect on the probability of transition from any stage of the IDP to the next. The magnitude of the impact is generally increasing in the stage of the surrounding markets. JEL Classification: F21, F23Keywords: Foreign Direct Investment; Investment Development Path. * OECD Statistics Directorate, 2 rue André Pascal, 75775 Paris cedex 16, France. Email: alexandros.ragoussis@oecd.org. I wish to thank Donald Wright and Mark Melatos for detailed comments to earlier drafts, as well as participants at the Barcelona IGU Conference 2008 for helpful suggestions. The views and opinions expressed in this paper do not represent the views of the OECD nor of its member countries.

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Firms find advantages in sourcing inputs from abroad and in fragmenting their production process. On average, vertical trade represents about one third of total trade among OECD countries. This report describes and illustrates new firm strategies of vertical specialisation and explores the policy implications of new patterns of trade and FDI. It is in services industries that vertical trade has increased the most in recent years. While vertical trade seems to respond to the same determinants as the rest of exports and imports, distance-related trade costs play a more important role in explaining the volume of bilateral trade flows resulting from vertical specialisation. Distance-related costs have a lower impact on foreign direct investment and sales of foreign affiliates but there is a complementary relationship between trade and FDI. Vertical specialisation networks have created new challenges for trade policymakers. In particular, growth of bilateral exchanges between countries depends increasingly on barriers to trade and investment in the rest of the world. Moreover, the impact of a country’s own trade barriers on domestic firms is significant in the context of vertical specialisation. The analysis stresses the importance of multilateral negotiations for trade and investment liberalisation.FDI, distance, MNEs, trade liberalisation, firm strategy, trade costs, vertical trade, vertical specialization, export platform