手法を比較

	縦断的比較法分析	歴史的アーカイブ調査
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	Late 20th century (comparative law foundational texts 1960s–1998; longitudinal integration from 1990s onward)	19th century (formalized ~1820s–1880s)
提唱者	Konrad Zweigert and Hein Kotz (comparative law foundation); longitudinal dimension integrated in socio-legal and legal history scholarship	Historians and archivists; systematised through the professionalization of historical scholarship in the 19th century
種類	Qualitative-interpretive legal research design	Qualitative primary-source research
原典	Zweigert, K., & Kotz, H. (1998). An Introduction to Comparative Law (3rd ed.). Oxford University Press. ISBN: 978-0198268598	Hill, M. R. (1993). Archival Strategies and Techniques. Sage Publications. ISBN: 978-0803951853
別名	LCLA, diachronic comparative law, longitudinal legal comparison, dynamic comparative legal research	archival research, historical document analysis, archival history, primary source research
関連	5	6
概要	Longitudinal comparative legal analysis examines how legal rules, doctrines, or institutions develop and diverge across two or more legal systems over an extended period. By combining the spatial dimension of comparative law with the temporal dimension of longitudinal research, it captures not just differences between jurisdictions at a single point but the trajectories of legal change — convergence, divergence, transplantation, and resistance — over years or decades.	Historical archival research is a systematic method of investigating the past through the critical examination of primary source documents preserved in archives, libraries, and institutional collections. Researchers locate, access, authenticate, and interpret original records — such as government documents, correspondence, diaries, maps, and institutional files — to reconstruct events, trace processes, and build evidence-based historical arguments. It is foundational to historiography and widely applied across humanities and social science disciplines.