CPO 2002 Lecture Notes - Lecture 71: Collectively Exhaustive Events
Document Summary
The three measures differ in regard to whether they employ: (a) minimalist or substantive (b) a dichotomous or continuous view of democracy. Validity extent to which our measures correspond tot he concepts that are intended to refliect. Three different measurement levels for validity: nominal: classifies observations into discrete categories that must be mutually exclusive and collectively exhaustive, ordinal: rank-order cases. Reliability the extent to which the measurement process repeatedly and consistently produces the same score for a given case. A reliable measure does not necessarily imply valid measure. Measurement process that produce results that do not change when repeated reliability reliability does not mean that the measure is an accurate reflection of the concept under consideration validity. The relaibility of a measure is likely to depend on the extent to which the measure depends on observable factors or subjective judgments. The dd is going to be seen more reliable because it is objective measure of observables.
