Behavioral safety is the current Holy Grail of loss control. The curious thing is that the people most knowledgeable about behavioral safety make the least wild claims about it. Get past the advertising and the people in the business will explain what their experience has shown can be done.
In contract negotiations, the limitations of the technique will come out. The contractor's delivery is limited by the cooperation given. Behavioral safety is remarkably like a delicate hothouse flower. It takes constant attention if it is to bloom. Neglect precedes failure here as elsewhere. A review of a small study might add light for insight into the reactions of people and their behaviors.