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Published online by Cambridge University Press: 23 October 2009
In contrast to the preceding chapter where our focus was on trade flows, in this chapter we examine financial flows. This gives us an opportunity to evaluate the role of financial markets, which until now we had assumed were perfectly integrated across countries. In this analysis, we continue to consider commodity markets that are not fully integrated but compare scenarios where financial markets are perfectly segmented and where they are perfectly integrated. This exercise, therefore, allows us to analyze the linkages between the real and financial sectors of an open economy. Helpman and Razin (1978a), in early work, examine the relation between the financial and real sectors of international economies; Arndt and Richardson (1987) and Allen and Stein (1990) discuss why it is important to study the issues that arise in this context.
Financial flows between nations arise from saving and investment decisions, decisions that are made on the basis of intertemporal considerations. In order to account for the intertemporal nature of these decisions, we work with the model of a production economy described in Chapter 3. Obstfeld (1982) and Cole and Obstfeld (1991) explain why it is necessary to account for the intertemporal considerations that arise only in the context of a production economy.
Our main results are the following. First, we show that the welfare gains from the integration of financial markets can be substantial when financial markets are the only vehicle for risk sharing.
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