Does Productivity Change at All in Swedish District Courts? Empirical Analysis Focusing on Horizontal Mergers

Xiaoqing Chen (), Kristiaan Kerstens and Mike Tsionas
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Xiaoqing Chen: School of Management Science and Engineering, Nanjing University of Information Science and Techno- logy, Nanjing, Jiangsu, China, and IESEG School of Management, 3 rue de la Digue, F-59000 Lille, France,

No 2023-EQM-03, Working Papers from IESEG School of Management

Abstract: This contribution is the first to compare the Malmquist and Hicks-Moorsteen pro- ductivity indices in the context of horizontal mergers of Swedish district courts during the period 2000-2017. It is also the first to calculate these productivity indices for con- vex and nonconvex nonparametric frontier specifications in courts under both constant and variable returns to scale. Moreover, a one-sample symmetric Wilcoxon test and a t-test are performed on the average productivity index to determine whether it is significantly different from unity. Also Li-test statistics examine the differences in pro- ductivity between these two indices or between convexity and nonconvexity for a given index. Furthermore, we compare these two productivity indices before and after the mergers to investigate the impact of the horizontal merger activity. The empirical res- ults indicate that overall there is no significant technical change at all. Furthermore, horizontal mergers overall do neither result in technical change, nor in post-merger productivity gains.

Keywords: Horizontal mergers; Malmquist productivity index; Hick-Moorsteen productivity index; Convex and Nonconvex Nonparametric Technologies (search for similar items in EconPapers)
Pages: 44 pages
Date: 2023-06
New Economics Papers: this item is included in nep-eff and nep-ind
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Related works:
Journal Article: Does productivity change at all in Swedish district courts? Empirical analysis focusing on horizontal mergers (2024)
Working Paper: Does productivity change at all in Swedish district courts? Empirical analysis focusing on horizontal mergers (2024)
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