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Université de Fribourg

Three-Valued Modal Logic for Qualitative Comparative Policy Analysis with Crisp-Set QCA

Mueller, Georg P.

(Working Papers SES ; 450)

Contradictory and missing outcomes are problems common to many qualitative comparative studies, based on the methodology of crisp-set QCA. They also occur in public policy analyses, e.g. if important background variables are omitted or outcomes of new policies are technically censored. As a new solution to these problems, this article proposes the use of three-valued modal logic, originally...