If I say that anything can change that behaviour, it is to demonstrate that this new thing is achievable, that a child or a monkey can do it, or to create a really good narrative that makes it desirable and valuable. For example, create a really good story that implies a good, verifiable conversation may save a company or a life, because gossip has condemned certain people, or the company has taken bad advice based on unverifiable data.
I would always recommend the anecdotal story of the five monkeys and the punishment for climbing to reach a banana.
If you have time, it is worth checking out the studies on learned helplessness by Martin Seligman and Steve Maier.
