手法を比較

	判例分析	比較法分析 ― 諸法域を横断する法比較
分野	フィールド調査法	フィールド調査法
系統	Process / pipeline	Process / pipeline
提唱年	Medieval English common law; academic formalisation 19th–20th century	Late 19th century; formalised 1900
提唱者	Common law tradition (England); systematised in Anglo-American jurisprudence	Gottfried Wilhelm Leibniz (early conceptualisation); Raymond Saleilles and Édouard Lambert (modern discipline, 1900 Paris Congress)
種類	Qualitative legal research method	Qualitative legal research method
原典	Hutchinson, T. (2010). Researching and Writing in Law (3rd ed.). Thomson Reuters. ISBN: 9780455227689	Zweigert, K., & Kötz, H. (1998). An Introduction to Comparative Law (3rd ed., T. Weir, Trans.). Oxford University Press. ISBN: 978-0198268598
別名	judicial decision analysis, legal case analysis, jurisprudential analysis, case-based legal research	comparative law, legal comparison, comparative jurisprudence, CLA
関連	6	6
概要	Case law analysis is a systematic method for examining judicial decisions to identify binding legal rules, evolving doctrines, and interpretive trends. Rooted in the common law tradition of stare decisis, it requires the researcher to locate the ratio decidendi — the binding reasoning — of each decision, distinguish it from obiter dicta, and trace how that reasoning has been applied, distinguished, or overruled across subsequent cases. The method is fundamental to legal scholarship, litigation strategy, and law reform research.	Comparative legal analysis is a structured research method that examines how two or more legal systems — whether national, regional, or supranational — address a common legal problem. By placing rules, doctrines, and judicial decisions side by side, researchers identify convergences, divergences, and the underlying societal, historical, and political forces that shape legal solutions. The method is foundational to law reform, harmonisation efforts, treaty drafting, and academic legal scholarship.