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This chapter presents a method for testing the existence of X-inefficiency, defined as uncontrolled inefficiency, under the hypothesis that differences in productivity are observed due to variations in the vintage of facility investments at each establishment. Using data from Japanese manufacturing, this chapter conducts the test and demonstrates that the hypothesis of the existence of X-inefficiency cannot be rejected.

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X-inefficiencies Across Japanese Manufacturing Industries: Identification Based on a Vintage Capital Investment Model

  • 章节

  • 发表日期：

    2026年

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  • Akio Torii

摘要

This chapter presents a method for testing the existence of X-inefficiency, defined as uncontrolled inefficiency, under the hypothesis that differences in productivity are observed due to variations in the vintage of facility investments at each establishment. Using data from Japanese manufacturing, this chapter conducts the test and demonstrates that the hypothesis of the existence of X-inefficiency cannot be rejected.