It’s Harder to Break a Relationship When you Commit Long

• Manabu Arai ,

  * E-mail: manabu-arai@seijo.ac.jp

  Affiliation Department of Economics, Seijo University, Tokyo, Japan

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• Chie Nakamura

  Affiliations Department of Linguistics and Philosophy, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America, Department of Language and Information Sciences, The University of Tokyo, Tokyo, Japan, Japan Society for the Promotion of Science, Tokyo, Japan

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