In my thesis I have conducted different case studies to validate the use of the viewpoint analyzer, a tool based on a production system, to help the analysis of viewpoints. Using different descriptions written in VWPL the tool would identify "candidates" for wrong information, inconsistencies and missing information.
The case studies did also pointed out that by having an agenda for discussing discrepancies would increase the overall knowledge about the topic at hand.
The paper below provides a case study that sheds more light of the importance on this agenda for discussion in the process of having better conceptual models.
Proceedings of the 13th IEEE International Conference on
Requirements Engineering, 2005
Do viewpoints lead to better conceptual models? An exploratory case study, by
Easterbrook, S. Yu, E. Aranda, J. Yuntian Fan Horkoff, J. Leica, M. Qadir, R.A.