Last week I was talking to a team manager who described to me a team descision and them ended up by saying:
“Everyone seemed to agree with the decision but when people came to act on it each person had a different idea on the action we agreed upon or reserved the right not to implement it”

False Consensus
Implementing team decisions can be difficult. Particularly when the members of the team are senior in status or are members on the basis of voluntary membership (they can leave and take their ball with them without any reprimand). I know this as “False consensus”. The problem for the team manager is that to try to play amateur Psychologist to solve the situation is likely to make the situation worse NOT better.

Shared Values
Consensus in team decisions is a powerful goal in decision making and often the reason for team meetings in the first place. Where the team members know each other well, share the same values and spend considerable time discussing issues with each other then it’s often easy and preferable. But where these factors are absent the team leader often has to develop them.