著者

Murata Yasusada Nakajima Ryo Okamoto Ryosuke Tamura Ryuichi

出版者

Institute of Economic Research, Kyoto University

雑誌

KIER Discussion Paper

巻号頁・発行日

vol.763, 2011-03

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We develop a new approach to localized knowledge spillovers by incorporating the concept of control patents (Jaffe, Trajtenberg and Henderson 1993) into the distancebased test of localization (Duranton and Overman, 2005). Using microgeographic data, we identify localization distance while allowing for cross-boundary spillovers, unlike the existing literature where the extent of localized knowledge spillovers is detected at the state or metropolitan statistical area level. We revisit the recent debate by Thompson and Fox-Kean (2005) and Henderson, Jaffe and Trajtenberg (2005) on the existence of localized knowledge spillovers, and find solid evidence supporting localization, even when finer controls are used.