From a Forbes article on 5 Metrics You Should Be Tracking:
You can learn as much from John Gottman as you can from John F. Kennedy about being a great communicator. Gottman, a psychologist, is the author of “Why Marriages Succeed or Fail”.
In his research, he found that marriages that succeed tend to have five times as many positive interactions as negative ones. And when a couple falls below that ratio, their relationship falls down too.
The same is true at the office, where you’re often connected for years in relationships with people who can either become wary of your criticisms or eager to give you their best effort. Catch people doing good things. Never miss a chance to say something nice, even if you feel a little silly. Then when you have feedback on areas to improve, they‘ll really listen. It may be hard to manage to the 5:1 ratio at the office, but you should be mindful of the balance.
Of course, DueProps only handles the positive side of that metric. But in many organizations, there is no official channel for gathering positive feedback on a regular basis from everyone!