Universalist personality theories resist empirical disconfirmation but typological ones do not

Evidence

Because they seek to explain the variable phenomena of political behavior with a constant, such efforts are not themselves subject to confirmation or disconfirmation. In contrast, it is possible to conduct systematic, replicable inquiries into political actors’ unique qualities (single-case analysis) and the qualities that make them more like some individuals than others (typological analysis). — John T. Jost and Jim Sidanius, Political Psychology, 1175

Categorization

• XREF: Parallels Popper’s falsifiability criterion applied to grand psychoanalytic theory via a constant explaining variables.