Scandinavian Working Papers in Economics

Working Papers,
Copenhagen Business School, Department of Economics

No 14-2007: The Causal Effects of Board Size in the Performance of Closely Held Corporations

Morten Bennedsen , Hans Christian Kongsted and Kasper Meisner Nielsen
Additional contact information
Morten Bennedsen: Department of Economics, Copenhagen Business School, Postal: Department of Economics, Copenhagen Business School, Solbjerg Plads 3 C, 5. sal, DK-2000 Frederiksberg, Denmark
Hans Christian Kongsted: Department of Economics, Copenhagen Business School, Postal: Department of Economics, Copenhagen Business School, Solbjerg Plads 3 C, 5. sal, DK-2000 Frederiksberg, Denmark
Kasper Meisner Nielsen: Department of Economics, Copenhagen Business School, Postal: Department of Economics, Copenhagen Business School, Solbjerg Plads 3 C, 5. sal, DK-2000 Frederiksberg, Denmark

Abstract: Boards are endogenously chosen institutions determined by observable and unobservable firm characteristics. Empirical studies of large publicly traded firms have successfully controlled for observable determinants of board size and shown a robust negative relationship between board size and firm performance. The evidence on smaller closely held firms is less clear; we argue that existing work has been incomplete in analyzing the causal relationship due to weak identification strategies. Using a rich data set of almost 6,000 small and medium-sized closely held corporations we provide a causal analysis of board size effects on firm performance using a novel instrument given by the number of children of the founders of the firms. First, we find no empirical evidence of adverse board size effects when the size of the board lies in the typical range for closely held corporations of three to six directors. Second, we find a significantly negative board size effect for the minority of closely held firms that are characterized by having comparatively large boards of seven or more members and non-complex operations.

Keywords: na

JEL-codes: G10

40 pages, January 1, 2007

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