The primary limitation of this research is that in addition to societal values there are other significant factors that influence democratization processes.
Furthermore, although our measurement tool has been validated extensively it still has its limitations, as do all tools of measurement.
We are exploring channels of improving upon the research and the measurement tool, including conducting further surveys. We would appreciate relevant feedback.
For further reading please see the Full Report, pages 4-5
(from the bottom of page 4)