Are there validated measures to perception of decision making process alignment?
The following article addresses the issue of decision-making process alignment:

Clemen RT (2008) Improving and measuring the effectiveness of decision analysis: Linking decision analysis and behavioral decision research. In T Kugler, JC Smith, T Connolly, Y-J. Son (eds.) Decision Modeling and Behavior in Complex and Uncertain Environments, Springer, New York: 3-31

Additionally, the following article presents another specific measure which was used to validate the group alignment among the participants by following a particular decision-making process:
Supporting Multicriteria Group Decisions with MACBETH Tools: Selection of Sustainable Brownfield Redevelopment Actions. Group Decision and Negotiation