Ks. Gleditsch et Md. Ward, DOUBLE TAKE - A REEXAMINATION OF DEMOCRACY AND AUTOCRACY IN MODERN POLITIES, The Journal of conflict resolution, 41(3), 1997, pp. 361-383
The Polity data are widely used to explore the causes and consequences
of democratic authority patterns. These data often have been used unc
ritically. The authors explore some of the theoretical and empirical c
haracteristics of these data. They show how the analytical composition
of the well-known democracy and autocracy scores is not upheld by an
empirical analysis of the component measurements and demonstrate that
democracy, as measured by the Polity indicators, is fundamentally a re
flection of decisional constraints on the chief executive. The recruit
ment and participation dimensions are shown to be empirically extraneo
us despite their centrality in democratic theory. The authors conclude
that it is a mistake to overlook the categorical nature of these data
and that an analysis of the constituent authority patterns is likely
to be fruitful for the democratic peace and democratization literature
.