手法を比較

	Most Similar Systems Design	プロセス・トレーシング
分野	Political Science	心理測定学
系統	Process / pipeline	Latent structure
提唱年	1970	2005
提唱者	John Stuart Mill (method of difference); Przeworski & Teune (systems framing)	Alexander George, Andrew Bennett
種類	Small-N comparative case-selection design	Qualitative causal inference
原典	Przeworski, A., & Teune, H. (1970). The Logic of Comparative Social Inquiry. New York: Wiley-Interscience. ISBN: 9780471701422	Bennett, A., & Checkel, J. T. (Eds.). (2015). Process Tracing: From Metaphor to Analytic Tool. Cambridge University Press.
別名	MSSD, Most similar cases design, Mill's method of difference, Comparable cases strategy	—
関連	3	5
概要	The most similar systems design (MSSD) is a small-N comparative strategy that selects cases as alike as possible on many background characteristics but differing on the outcome of interest. By matching cases so that most potential confounders are held roughly constant, the design isolates the few factors that vary alongside the outcome as the candidate causes. Rooted in John Stuart Mill's method of difference and named by Przeworski and Teune, it is a cornerstone of comparative politics for drawing causal inferences from a handful of countries or cases.	Process Tracing is a qualitative research method developed by George and Bennett (2005) for studying causal mechanisms and causal chains within individual cases. It involves examining the sequence of events and decision-making processes within a case to infer whether a hypothesized causal mechanism actually operated. Process tracing aims to strengthen causal inference in case studies by looking beyond correlation to understand how causes produce effects.