Concept-measurement methods should vary with the substantive phenomenon under study.

Evidence

My approach to concepts differs in a number of fundamental ways, partially because of my focus on concepts and partially because of my interest in substantive concepts like corporatism, democracy, crisis, militarized disputes, and so on. My point is not to say that the factor analytic approach is wrong, but that there are issues it overlooks, that there are other approaches to concepts, and that one should and can vary the approach according to the substantive phenomenon under study. — Gary Goertz, Social Science Concepts, 129

Categorization

• XREF: Connects to Adcock & Collier-style measurement-validity debates and to Mill’s methods-of-comparison material on matching method to object.
• SEED: Essay angle: ‘No Universal Measurement Manual’ — why social science concept-formation is a craft of fit, not a single canonical technique.