In a previous Project Management course we were asked to identfy the personality styles of our team members, analyze how those styles might conflict and to come up with a set of ground rules for the project team to address those potential conflicts. What you are referring to in this post is conflict and how to resolve it. It is important for a Project Manager to understand different working styles and have basic knowledge about conflict resolution in these circumstances. Communication is of course very important, but since a PM has to work with so many different types of team members that may have important roles on the team, they must be able to manage those personalities. It is one of those “soft skills” that really needs development to excel in the project manangement field.