手法を比較

	Set-Theoretic Multimethod Research	Most Similar Systems Design
分野	Political Science	Political Science
系統	Process / pipeline	Process / pipeline
提唱年	2013	1970
提唱者	Carsten Q. Schneider & Ingo Rohlfing	John Stuart Mill (method of difference); Przeworski & Teune (systems framing)
種類	Integrated cross-case and within-case set-theoretic design	Small-N comparative case-selection design
原典	Schneider, C. Q., & Rohlfing, I. (2013). Combining QCA and Process Tracing in Set-Theoretic Multi-Method Research. Sociological Methods & Research, 42(4), 559–597.	Przeworski, A., & Teune, H. (1970). The Logic of Comparative Social Inquiry. New York: Wiley-Interscience. ISBN: 9780471701422
別名	SMMR, Set-theoretic multi-method research, QCA plus process tracing, Set-theoretic MMR	MSSD, Most similar cases design, Mill's method of difference, Comparable cases strategy
関連	4	3
概要	Set-theoretic multimethod research (SMMR) integrates the cross-case logic of Qualitative Comparative Analysis with the within-case logic of process tracing. After QCA identifies the combinations of conditions that are necessary or sufficient for an outcome, SMMR uses the resulting solution terms to classify cases — typical, deviant, individually irrelevant — and to select cases for in-depth process tracing. Codified by Carsten Schneider and Ingo Rohlfing, it grounds the choice of cases and the search for mechanisms in set theory, so cross-case and within-case inference reinforce one another within a single, coherent framework.	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.