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3 - Necessary Conditions

Published online by Cambridge University Press:  07 October 2021

Ioana-Elena Oana
Affiliation:
European University Institute, Florence
Carsten Q. Schneider
Affiliation:
Central European University, Budapest
Eva Thomann
Affiliation:
Universität Konstanz, Germany
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Summary

Being a member state of the European Union is necessary for having the Euro as the official currency: the set of EU member states is a superset of the set of countries with the Euro as a national currency. Generally, if a condition X is necessary for an outcome Y, then X is a superset of Y. In this chapter, we introduce the notion of necessity and discuss the analysis of necessary conditions in R. We explain what necessity is, how to analyze and visualize necessary conditions, how to interpret the results, and how to avoid common pitfalls. We outline the basic protocol for the analysis of necessity in R, both for the analysis of individual necessary conditions and for conditions combined with a logical OR, that is necessary disjunctions composed of so-called SUIN conditions.

Learning goals:

- Understanding of the basic logic of necessity.

- Familiarity with different approaches to analyzing necessity in QCA and the protocol for the analysis of necessity.

- Basic understanding of possible analytic pitfalls when analyzing necessity and ways of avoiding them.

- Ability to implement an analysis of necessity in R and visualize the results.

Type
Chapter
Information
Qualitative Comparative Analysis Using R
A Beginner's Guide
, pp. 63 - 85
Publisher: Cambridge University Press
Print publication year: 2021

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