Diversified business (or corporate) groups, consisting of legally independent firms operating in multiple markets, are ubiquitous in emerging markets and even in some developed economies. The study of groups, a hybrid organizational form between firm and market, is of relevance to industrial organization, corporate finance, development, economic growth and other domains of economic inquiry. This survey begins with stylized facts on groups around the world, and proceeds to a critical review the existing literature, which has focused almost entirely on groups as diversified entities and on conflicts between controlling and minority shareholders. Other schools of thought on the political economy of corporate groups, on groups and monopoly power, and on groups as networks are discussed next. We then proceed to promising, yet virtually unexplored, alternative lenses for viewing groups, for example, as quasi venture-capitalists or as family-based structures. The analysis points out important biases in the literature including the avoidance of a serious discussion of the origins of business groups, and the unfounded assumption that rentseeking is the only feasible political economy equilibrium in an interaction between groups and the government. We note that the empirical tendency to use recent data implies that the vast majority of studies exploit cross-sectional variation; the absence of (long) time-series data ensures that some conceptually important issues, such as how groups shape the environment in which they operate, receive relatively little attention. Lastly, we outline an agenda for future research. AcknowledgementsWe are grateful to Kee

We examine the effects of bank-firm relationships on firm performance in Japan. When access to capital markets is limited, close bank-firm ties increase the availability of capital to borrowing firms, but do not lead to higher profitability or growth. The cost of capital of firms with close bank ties is higher than that of their peers. This indicates that most of the benefits from these relationships are appropriated by the banks. Finally, the slow growth rates of bank clients suggest that banks discourage firms from investing in risky, profitable projects. However, liberalization of financial markets reduces the banks' market power.

the "Financial Systems and Institutions in the Third Millenium" conference (Jerusalem), and the "Emerging Markets Finance" conference (London Business School) for very helpful comments and suggestions. Several individuals assisted us with data collection, especially Chanhi Park with the Korean data, Liat Sack with the Israeli data, and Hideaki Miyajima with the prewar Japanese data. William Simpson contributed his invaluable econometric expertise, and Eli Enoch, Kathleen Ryan, James Schorr and Zamir Sivan assisted in assembling the database. Khanna thanks the Division of Research at HBS for financial support. This paper was revised while Yafeh was visiting the University of Oxford (St. Antony's College, the Nissan Institute, and the Saïd Business School) whose hospitality is gratefully acknowledged. All errors remain our own.

W e investigate whether cultural differences between professional decision makers affect financial contracts in a large data set of international syndicated bank loans. We find that more culturally distant lead banks offer borrowers smaller loans at a higher interest rate and are more likely to require third-party guarantees. These effects do not disappear following repeated interaction between borrower and lender and are economically sizable: A one-standard-deviation increase in cultural distance, approximately the distance between Canada and the United States or between Japan and South Korea, is associated with a 6.5 basis point higher loan spread; the loan spread increases by about 23 basis points if the bank-firm match involves culturally more distant parties, for example, from Japan and the United States. We also find that cultural differences not only affect the relation between borrower and lender, but also hamper risk sharing between participant banks and culturally distant lead banks.

Diversified business (or corporate) groups, consisting of legally independent firms operating in multiple markets, are ubiquitous in emerging markets and even in some developed economies. The study of groups, a hybrid organizational form between firm and market, is of relevance to industrial organization, corporate finance, development, economic growth and other domains of economic inquiry. This survey begins with stylized facts on groups around the world, and proceeds to a critical review the existing literature, which has focused almost entirely on groups as diversified entities and on conflicts between controlling and minority shareholders. Other schools of thought on the political economy of corporate groups, on groups and monopoly power, and on groups as networks are discussed next. We then proceed to promising, yet virtually unexplored, alternative lenses for viewing groups, for example, as quasi venture-capitalists or as family-based structures. The analysis points out important biases in the literature including the avoidance of a serious discussion of the origins of business groups, and the unfounded assumption that rentseeking is the only feasible political economy equilibrium in an interaction between groups and the government. We note that the empirical tendency to use recent data implies that the vast majority of studies exploit cross-sectional variation; the absence of (long) time-series data ensures that some conceptually important issues, such as how groups shape the environment in which they operate, receive relatively little attention. Lastly, we outline an agenda for future research. AcknowledgementsWe are grateful to Kee