グンジ　ヒロシ   郡司　大志   経済学部 現代経済学科   教授

■ 標題   Competition among Regional Banks in Japan: Evidence from the Boone Indicator

■ 概要   In this study, we use the method of Boone et al. (2007, How (not) to measure competition, TILEC Discussion Paper, No. 2007 - 014), known as the Boone indicator, to estimate competition in the banking industry in Japan. Classical methods, for example, market share, price-cost margin, and the Herfindahl-Hirschman Index, are not monotonically related to competition, so they are inappropriate. On the other hand, as many studies by Boone suggest, the Boone indicator can capture precisely the degree of competition. Our results show that the banking industry in Japan has been more competitive in recent years.   Hiroshi Gunji and Kazuki Miura   共著   Journal of International Economics Studies   31   2017/03

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