It is important for ScrumMasters to understand personality and learning frameworks so that he/she may more readily recognize what's really going on when a team's members move from the "Forming" stage into the "Storming" stage. One such framework is called the Five Factor Model (FFM); basically, five dimensions that describe the human personality (refer to http://en.wikipedia.org/wiki/Big_Five_personality_traits for more information). These certainly come into play when a team's members get to know each other.
How open-minded and curious are the people on your team? Do some want to explore different ways of designing or coding a feature, while others have already made up their minds about how to proceed? For the latter, are they set in their approach, not wanting to listen to the ideas of others? One example that readily comes to mind is the architect and the developer. The architect wants to figure it out all up front, think...