2025.3.5
OSIPP基幹講座教員の2月の研究業績をご紹介します。
・小原美紀 先生 ・山下拓朗 先生
・大久保邦彦 先生 ・赤井伸郎 先生
・二杉健斗 先生 ・中嶋啓雄 先生
Miki Kohara（論文）
Miki Kohara and Mao Nakayama, “The impact of childcare on maternal employment,” Pacific Economic Review, December 2024, Vol.29, Issue 5, pp.542-566.（査読あり）
https://doi.org/10.1111/1468-0106.12459
Abstract: This paper re‐examines the impact of childcare availability on maternal employment in Japan, focusing on the period when childcare centre availability increased dramatically due to government policies in the 2010s aimed at boosting women’s labour participation. We use data tracking mothers’ employment status after childbirth, merging administrative data on the availability of both standard and nonstandard childcare centres. This is linked to each respondent via location identifiers based on their residential city and the nearest train station. The findings first show that an increase in unlicensed/nonstandard daycare availability significantly raised the proportion of mothers who return to work by the time the child reaches the age of three, particularly in areas with limited access to licensed/standard centres. Secondly, the effects may vary depending on the services offered by the centres. The results suggest that nonstandard centres, often more conveniently located and offering varied services, better meet the needs of working mothers, leading to higher employment rates. This research emphasizes that government efforts to expand childcare options in the 2010s may play a crucial role in promoting maternal labour‐force participation in Japan.
Takuro Yamashita （論文）
Daniil Larionov, Hien Pham, Takuro Yamashita, Shuguang Zhu, “First Best Implementation With Costly Information Acquisition”, Journal of Economics & Management Strategy,First published: 29 January 2025（査読あり）https://doi.org/10.1111/jems.12628
Abstract: We study mechanism design with flexible but costly information acquisition. There is one principal and four or more agents, who share a common prior belief over a set of payoff-relevant states. The principal proposes a mechanism to the agents, each of whom can then acquire information about the state by privately designing a signal device. As long as it is costless for each agent to acquire a signal that is independent of the state, there exists a mechanism that allows the principal to implement any social choice rule at zero information acquisition cost for the agents.
大久保邦彦（論文）
「相続の根拠」『阪大法学』第74巻第5号（2025年1月）https://doi.org/10.18910/100307
概要：本稿では、「相続の根拠」「相続制度の必要性」という項目の下で論じられる諸問題に検討を加え、相続制度の背後に控えている法原理を明らかにしようと試みた。最初に、相続制度否定論として、ソビエトにおける相続廃止の社会実験（相続廃止布告）、法哲学者・森村進の見解、哲学者・ハズレットの見解に検討を加え、次に、「相続の根拠」に関する従前の学説（意思説・清算説・扶養説・取引安全説・公益説）を概観した。以上の考察を踏まえ、相続制度を否定した場合にどうなるかについて、積極財産と消極財産に分けて思考実験を行った。その結果、相続制度の廃止は弊害が大きく、現実的な選択肢としては採りえないという結論に達した。結論的には、本稿は、相続法の主目的を、取引安全のために遺産管理機構を設置することに求めているが、従前の学説の中では、取引安全説に最も近い。
赤井伸郎（著書）
赤井伸郎、沓澤隆司、竹本亨『都市における空間経営の財政学 — コンパクトシティがもたらす持続可能な自治体運営』（2025年02月刊行）
https://www.yuhikaku.co.jp/books/detail/9784641166400
概要：都市のコンパクト化が財政や住民の行動・健康に対してもつ効果，そして地域の政策がコンパクト化に及ぼす影響について，実証的に解明する書物。新型コロナウイルス感染症や人口減少の影響など多様な論点も解説する，コンパクトシティを考えるための基本書。
Kento Nisugi （書評）
“Book Review: Corporate Environmental Responsibility in Investor-State Dispute Settlement: The Unexhausted Potential of Current Mechanisms, by Tomoko Ishikawa. Cambridge and New York: Cambridge University Press, 2023. Pp. xxxix, 302.,” Japanese Yearbook of International Law, Vol. 67 (2025) 489-492.
Abstract: This book review critically examines Tomoko Ishikawa’s Corporate Environmental Responsibility in Investor-State Dispute Settlement, highlighting its analysis of the untapped potential of counterclaims in holding investors accountable for environmental misconduct. The review commends Ishikawa’s thorough legal and empirical research, including her quantitative study of 1,000 investment agreements, which challenges the assumption that counterclaims are largely unfeasible. While recognizing the book’s valuable insights into jurisdictional hurdles and investor obligations, the review also discusses its limitations, particularly the structural constraints of the investment law regime. It concludes that Ishikawa’s work is a significant contribution to legal scholarship, offering both theoretical depth and practical reform proposals.
中嶋啓雄（書評）
書評：「森口（土屋）由香・川島真・小林聡明編『文化冷戦と知の展開――アメリカの戦略・東アジアの論理――』（京都大学学術出版会、2022年）」『西洋史学』第278号（2024年12月）、89～91頁
概要：国際共同研究の成果である上掲書の学術的意義を論じ、若干の課題を指摘している。