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張永健 Yun-Chien Chang

photo credit: 蔡秉耕

張永健Yun-Chien Chang

Current Appointment

Research Professor, Institutum Iurisprudentiae, Academia Sinica
Director of Center for Empirical Legal Studies, Institutum Iurisprudentiae, Academia Sinica

Education & Experiences

J.S.D., New York University School of Law (2009)
LL.M., New York University School of Law (2006)
LL.M., National Taiwan University (2003)
LL.B., National Taiwan University (2000)

Research Fields

Private Law, Land Use Regulation, Economic Analysis of Law, Empirical Legal Studies

Honors and Grants

Distinguished Article Award, Asian Law and Society Association, 2019. (first-ever recipient) 
Academia Sinica Law Journal Award, 2018.
Academia Sinica Law Journal Award, 2016. 
Outstanding Scholar Award, awarded by Foundation for the Advancement of Outstanding Scholarship, 2016. 
Junior Investigator Award, awarded by Academia Sinica, 2015.
Scholarly Monograph Award in the Humanities and Social Sciences, awarded by Academia Sinica, 2013.
CELS Best Poster Presentation Prize, 2011. (first-ever recipient)
Li Foundation Heritage Prize “Excellence in Creativity Award”, 2010–2012 ($40,000 research funding over two years).

Other Information

Date of First Appointment:09/16/2009
Personal Website:
Research Assistant:Kuan-ting Chen |+886-2-2652-5448 |

Research Description

Yun-chien Chang
  Prof. Yun-chien Chang is a Research Professor at Institutum Iurisprudentiae, Academia Sinica, Taiwan and serves as the Director of its Empirical Legal Studies Center. He was or will be a visiting professor at Cornell University, Columbia University, New York University, the University of Chicago, St. Gallen University, Hebrew University of Jerusalem, and Rotterdam Institute of Law and Economics. He has also conducted research at Free University of Berlin, University of Paris II, and University of Tokyo. His current academic interests focus on economic, empirical and comparative analysis of private law (particularly property law), as well as empirical studies of the judicial system. Prof. Chang has authored and co-authored more than 100 journal articles and book chapters. His English articles have appeared in leading journals in the world, such as Journal of Legal Studies; Journal of Legal Analysis; Journal of Law and Economics; American Law and Economics Review; Journal of Law, Economics, and Organization; Journal of Empirical Legal Studies; International Review of Law and Economics; European Journal of Law and Economics; I˙Con; the University of Chicago Law Review; Notre Dame Law Review; Iowa Law Review and the Supreme Court Economic Review, among others.

  His monograph Private Property and Takings Compensation: Theoretical Framework and Empirical Analysis (Edward Elgar, 2013) was a winner of the Scholarly Monograph Award in the Humanities and Social Sciences. Prof. Chang (co-)edited Empirical Legal Analysis: Assessing the Performance of Legal Institutions (Routledge, 2014), Law and Economics of Possession (Cambridge UP, 2015), Private Law in China and Taiwan: Economic and Legal Analyses (Cambridge UP, 2016), and Selection and Decision in Judicial Process Around the World: Empirical Inquires (Cambridge UP, 2020). Prof. Chang is also a co-author of Property and Trust Law in Taiwan (Wolter Kluwers, 2017). He authored several books in Chinese published in China and Taiwan, Compensation for Physical and Regulatory Takings of Land: Theory and Practice (Angle, 2013; 2nd edition, 2020), Economic Analysis of Property Law (Standard Chinese: Angle, 2015; 2nd edition, 2021; simplified Chinese: Beijing UP, 2019), Empirical Legal Studies: Empirical Legal Studies: Principles, Methods, and Applications (New Sharing, 2019; simplified Chinese, 2021 forthcoming), and Interpreting Private Law: A Social Scientific Approach (New Sharing, 2020), and also (co-)edited The Empirical Legal Studies Reader I: Domestic Perspectives (The Law Press, 2020) and Empirical Studies of the Judicial Systems 2011 (Institutum Iurisprudentiae, Academia Sinica; 2013).

  Prof. Chang’s academic achievements have won him the Career Development Award in 2016, Outstanding Scholar Award in 2016, Academia Sinica Law Journal Award in 2016, the Junior Research Investigators Award in 2015, the Best Poster Prize at 2011 CELS, and several research grants. He serves as a Co-Editor of International Review of Law and Economics; a Consultant Editor of European Journal of Law and Economics; an Editor of Asian Journal of Comparative Law and a Panelist on American Law Institute’s Restatement Fourth, Property International Advisory Panel.

  Prof. Chang received his J.S.D. and LL.M. degree from New York University School of Law, where he was also a Lederman/Milbank Law and Economics Fellow and a Research Associate at the Furman Center for Real Estate and Urban Policy, NYU. Before going to NYU, Prof. Chang had earned LL.B. and LL.M. degrees at National Taiwan University and passed the Taiwan bar. Prof. Chang has had working experience with prestigious law firms in Taiwan and has served as a legal assistant for the International Trade Commission.

Journal Articles

  • 黃詩淳、張永健*、何叔孋,accepted,〈身後事,不歧視? 遺產分配性別偏好的實證研究〉,《中研院法學期刊》。(TSSCI)
  • Yun-chien Chang, Daniel Klerman*, accepted, “Settlement Around the World: Settlement Rates in the Largest Economies”, JOURNAL OF LEGAL ANALYSIS. (SSCI) (IF: 2.75; SSCI ranking: 11.3%)
  • 黃詩淳*、張永健、何叔孋、陳昱廷,accepted,〈3,179筆經公證、認證遺囑的實證研究〉,《公證法學》。
  • 張永健,2022,〈給下一輪太平盛世的Legal Tech 備忘錄〉,《月旦法學教室》,238, 61-63。
  • 張永健,2022,〈法實證研究方法論:實證比較法的五種取徑〉,《月旦法學》,(326), 59-78。
  • Yun-chien Chang, 2022, “Adverse Possession Laws in 203 Jurisdictions: Proposals for Reform”, UNIVERSITY OF PENNSYLVANIA JOURNAL OF INTERNATIONAL LAW, 43(2), 373-433. (SSCI) (IF: 0.27; SSCI ranking: 94.7%) Relevant Links(open new window)
  • Yun-chien Chang*, William Hubbard, 2021, “New Empirical Tests for Classic Litigation Selection Models”, AMERICAN LAW AND ECONOMICS REVIEW, 23(2), 348-394. (SSCI) (IF: 0.923; SSCI ranking: 83.3%,70.9%) Relevant Links(open new window)
  • 張永健,2021,〈繼承標的之一般理論——《民法典》第1122條的法經濟分析〉(A General Theory of Estate: An Economic Analysis of Article 1122 of the Chinese Civil Code),《中外法商評論》,1, 258-267。
  • 張永健,2021,〈霍菲爾德分析法學對占有、信托概念的新界定〉(New Conceptualization of Possession and Trust: A Hohfeldian Analytical Approach),《經貿法律評論》,6, 54-71。

Books (Monographs or Edited Volumes)

  • Yun-chien Chang*, Weitseng Chen, Ying Chieh Wu,2022,《Property and Trust Law in Taiwan (2nd edition)》,共166頁,Alphen aan den Rijn:Wolters Kluwer。
  • Yun-chien Chang, Unpublished, Property Law: Comparative, Empirical, and Economic Analyses, Cambridge: Cambridge University Press.
  • 張永健,2021,《法經濟分析——方法論與物權法應用》,共563頁,臺北:元照。
  • 張永健,2020,《社科民法釋義學》,共500頁,臺北:新學林。 Relevant Links(open new window)
  • 張永健,2020,《土地徵收與管制之補償——理論與實務》,共325頁,臺北:元照。 Relevant Links(open new window)
  • 張永健,2019,《物權法之經濟分析——所有權》,共381頁,北京:北京大學出版社。
  • 張永健,2019,《法實證研究:原理、方法與應用》,共499頁,臺北:新學林。
  • Yun-chien Chang*, Weitseng Chen, Ying Chieh Wu, 2017, Property and Trust Law in Taiwan, 154 pages, Alphen aan den Rijn: Wolters Kluwer. Relevant Links(open new window)
  • 張永健,2015,《物權法之經濟分析(第一冊)——所有權》,共406頁,臺北:元照出版社。
  • 張永健,2013,《土地徵收補償:理論、實證、實務》([In Chinese] Chang, Yun-chien. 2013. Eminent Domain Compensation in Taiwan: Theory and Practice. Taipei, Taiwan: Angle Publishing.),共177頁,臺北:元照。 Relevant Links(open new window)
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Book Chapters

  • 張永健,2022,〈損害賠償(之債)作為公因式? 大民法典理論下的反思〉,蘇永欽教授七秩祝壽論文集編輯委員會編,《法學的想像(第一卷):大民法典──蘇永欽教授七秩華誕祝壽論文集》,頁265-282,臺北:元照。
  • 張永健,2022,〈損害賠償之債 ——5800筆判決的實證社科法學研究〉,蘇永欽教授七秩祝壽論文集編輯委員會編,《法學的想像(第四卷):社科法學──蘇永欽教授七秩華誕祝壽論文集》,頁673-687,臺北:元照。
  • 張永健,accepted,〈Legal Tech 淺介〉,元照等編,《法律人生涯智謀32講》,臺北:元照等。
  • 張永健,2021,〈新私法學〉(New Private Law: Why and How),李建良編,《研之得法:中央研究院法律學研究所成立十週年文集》,頁443-460,臺北:中研院法律所。 Relevant Links(open new window)
  • 張永健,2020,〈法經濟分析——基本立場與教義應用〉,李晟編,《法律書評第13輯》,頁3-16,中國北京:北京大學出版社。
  • 何漢葳、張永健*,2020,〈2001年到2016年車禍致傷判決之實證研究——數據呈現教戰手冊〉,民法研究基金會編,《民事法理論與實務的新開展——陳志雄律師八秩華誕祝壽論文集》,頁65-96,臺北:新學林。
  • Yun-chien Chang*, William Hubbard, 2020, “Speedy Adjudication in Hard Cases and Low Settlement Rates in Easy Cases: An Empirical Analysis of Taiwanese Courts with Comparison to US Federal Courts”, editor(s): Yun-chien Chang, Selection and Decision in Judicial Process Around the World: Empirical Inquires, pp. 73-109, Cambridge: Cambridge University Press.
  • Yun-chien Chang, 2020, “Judges Avoid Ex Post but Not Ex Ante Inefficiency: Theory and Empirical Evidence from Taiwan”, editor(s): Yun-chien Chang, Selection and Decision in Judicial Process Around the World: Empirical Inquires, pp. 160-178, Cambridge: Cambridge University Press.
  • Yun-chien Chang, 2020, “Introduction”, editor(s): Yun-chien Chang, Selection and Decision in Judicial Process Around the World: Empirical Inquires, pp. 1-5, Cambridge: Cambridge University Press.
  • 邱文聰*、張永健,2018,〈假作真時真亦假——論管制與處罰攙偽假冒食品〉(On Regulating and Punishing Economic Adulteration of Food),李建良編,《2015行政管制與行政爭訟》,頁327-402,臺北:中研院法律所。
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Conference Papers

  • 張永健,2022,〈Machine Learning and Comparative Law〉,發表於IEAS Seminar,臺北:中研院經濟所,2022-12-02。
  • 張永健,2022,〈TBD〉,發表於個人學術研討會,臺北:中研院法律所,2022-11-22。
  • Han-wei Ho, Patrick Huang, Yun-chien Chang*, 2022, “Machine-learning Comparative Law”, paper presented at 2022 CELS, Charlottesville, VA: Universaity of Virginia Law School, 2022-11-04 ~ 2022-11-05.
  • 張永健*、黃詩淳、何叔孋,2022,〈遺囑中的性別平等:實證研究〉,發表於「高教深耕特色領域中心」臺大計量中心成果發表會,線上:臺灣大學計量中心,2022-09-12。
  • Chang-Ching Lin, Yun-chien Chang*, 2022, “Learning or Networking? The Causal Effect of Judges Sitting by Designation”, paper presented at 第二屆「比較視野中的法律、法院與司法治理」學術研討會, 北京(線上): 北京清華大學, 2022-07-06 ~ 2022-07-07.
  • Yun-chien Chang*, 2022, “The Accessio Doctrine: No Sign of Convergence”, paper presented at 2022 Asia-Pacific Private Law Conference, on-line: National University of Singapore Law Faculty, 2022-05-26 ~ 2022-05-27.
  • 張永健,2022,〈法實證研究的未來:從典範移轉到常態學科〉,發表於我國法律經濟分析的回顧與展望,臺北:臺灣法理學會,2022-04-30。
  • Yun-chien Chang*, Geoffrey Miller, 2022, “Things Fall Apart: Decay of Precedent in State Supreme Courts”, paper presented at 2022 Conference on Empirical Legal Studies, on-line: University of Toronto, 2022-03-18 ~ 2022-03-19.
  • 張永健,2022,〈法實證研究方法論〉,發表於第12回法理學研討會,臺北:東吳大學法學院,2022-03-17。
  • Yun-chien Chang, 2022, “Property Law: Comparative, Empirical, and Economics Analyses”, paper presented at Property Law: Comparative, Empirical, and Economics Analyses Workshop, On-line: University of Toronto, 2022-02-23. Relevant Links(open new window)


  • Xin Dai, Yun-chien Chang*, accepted, “Cost-Benefit Reasoning Versus Proportionality: A Rejoinder”, ICONnect.
  • 張永健,2004,〈美國二0一鋼鐵防衛措施案爭議整理〉,《貿易調查專刊》,第12期,頁323-347。
  • 張永健*、吳典倫,2002,〈代理孕母之法律經濟分析〉,《生物科技與法律研究通訊》,第13期,頁17-36。


  • Yun-chien Chang, 2009, “Takings Compensation Assessment:Theoretical Framework and Empirical Studies”, 199 pages, School of Law, New York University.
  • 張永健,2003,〈論藥品、健康食品、食品之管制〉(Chang, Yun-chien. 2003. Regulations of Food, Drugs, and Dietary Supplements. National Taiwan University College of Law Master Thesis.),共240頁,法律學研究所,台灣大學。 Relevant Links(open new window)

Edited Books

  • Thomas Miles、程金華*、張永健,未出版,《法律實證研究:英文經典選讀》,中國北京:法律出版社。
  • 程金華*、張永健,2020,《法律實證研究:入門讀本》,共279頁,中國北京:法律出版社。
  • Yun-chien Chang, 2020, Selection and Decision in Judicial Process Around the World: Empirical Inquires, 296 pages, Cambridge: Cambridge University Press.
  • Yun-chien Chang*, Wei Shen, Wen-yeu Wang, 2016, Private Law in China and Taiwan: Economic and Legal Analyses, 347 pages, Cambridge: Cambridge University Press.
  • Yun-chien Chang, 2015, Law and Economics of Possession, 364 pages, Cambridge: Cambridge University Press. Relevant Links(open new window)
  • Yun-chien Chang, 2014, Empirical Legal Analysis: Assessing the Performance of Legal Institutions, 258 pages, London and New York: Routledge. Relevant Links(open new window)
  • 張永健,2013,《2011司法制度實證研究》,共272頁,臺北:中研院法律所。 Relevant Links(open new window)

Research Project Report

  • 張永健,2017,《事實審民事訴訟事件強制律師代理實證研究計畫》,司法院委託。
  • 張永健,2000,《人身保險有無複保險之適用》,共65頁,國科會獎勵大專學生參與研究計畫NSC89-2815-C002-093H委託。

Book Review

  • Yun-chien Chang, 2021, “Property Rights: (Probabilistically) Necessary or Sufficient for Economic Development in China and Beyond?”, Law & Social Inquiry, 46, 00-00.
  • 張永健,2020,〈負負得正——對《物權法之經濟分析:所有權》書評之回應〉,《法律書評》,第13輯,頁115-139。
  • 張永健,2020,〈經濟人的法經濟學vs法律人的法經濟分析——答賀劍教授等師友之書評〉([In Chinese] Law and Economics vs. Economic Analysis of Law: A Rejoinder to Prof. Jian He’s Book Review),《中研院法學期刊》,第27期,頁293-344。
  • 張永健,2017,〈社會科學式的比較法研究——評Mark Ramseyer. 2015. Second Best Justice: The Virtues of Japanese Private Law. The University of Chicago Press〉,《中研院法學期刊》,第20卷,頁211-249。 Relevant Links(open new window)
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