I’ve been using a variety of personality assesments on teams over the years and found them to be useful. The new Strengthse Finder 2.0 from Gallup and Tom Rath is definetely one I’m adding to the list. Throught tests similar to DiSC or MBTI is classifies your top strengths or themes. These themes can help you understand why you and others behave the way you do. Give it a read!