Find The Truth In The Middle
If you're a parent of two children you already know that when the two are fighting and child #1 tells you what happened, you then ask child #2 what happened, and most often the truth is somewhere in the middle of what the two children have told you.
Surprisingly, many managers, even when they are parents, don't use this parenting "discovery" skill in the workplace. Instead, they often listen to only one side of a situation. Whether it is because of lack of interest or lack of time, they don't proactively seek out the other side of the story.
The unfortunate result is those managers form incorrect perceptions that can often lead to poor decisions and/or directives.
So, the next time two employees are at odds, or when one department complains about another department within your organization, take the time to listen to all sides of the situation to discover the truth that's in the middle.