Most Different Systems Design
The most different systems design (MDSD) is a small-N comparative strategy that selects cases that differ on as many background characteristics as possible yet share the same outcome. If wildly dissimilar cases nonetheless converge on the same result, the explanation cannot lie in the many features on which they differ — it must lie in whatever they have in common. Grounded in John Stuart Mill's method of agreement and named by Przeworski and Teune, it is the mirror image of the most similar systems design and a staple of comparative politics.
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Kilder
- Przeworski, A., & Teune, H. (1970). The Logic of Comparative Social Inquiry. New York: Wiley-Interscience. ISBN: 9780471701422
- Seawright, J., & Gerring, J. (2008). Case Selection Techniques in Case Study Research: A Menu of Qualitative and Quantitative Options. Political Research Quarterly, 61(2), 294–308. DOI: 10.1177/1065912907313077 ↗
- Gerring, J. (2007). Case Study Research: Principles and Practices. Cambridge: Cambridge University Press. ISBN: 9780521676564
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ScholarGate. (2026, June 22). Most Different Systems Design (Comparative Method of Agreement). ScholarGate. https://scholargate.app/da/political-science/most-different-systems-design
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- Most Similar Systems DesignPolitical Science↔ sammenlign
- Process TracingPsykometri↔ sammenlign
- Qualitative Comparative AnalysisPolitical Science↔ sammenlign
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