Psychologist Bruce Tuckman first came up with the phrase "forming, storming, norming, and performing" in his 1965 article, "Developmental Sequence in Small Groups." He used it to describe the path that most teams follow on their way to high performance. Later, he added a fifth stage, "adjourning”. The stages re described below.
Forming
In this stage, most team members are positive and polite. Some are anxious, as they haven 't fully understood what work the team will do. Others are simply excited about the task ahead.
As leader, you play a dominant role at this stage, because team members ' roles and responsibilities aren 't clear.
This stage can last for some time, as people start to work together, and as they make an effort to get to know their new colleagues.
Storming
Next, the team moves into the storming phase, where people start to push against the boundaries established in the forming stage. This is the stage where many teams fail.
Storming often starts where there is a conflict between team members ' natural working styles. People may work in different ways for all sorts of reasons, but if differing working styles cause unforeseen problems, they may become frustrated.
Storming can also happen in other situations. For example, team members may challenge your authority, or jockey for position as their roles are clarified. Or, if you haven 't defined clearly how the team will work, people may feel overwhelmed by their workload, or they could be uncomfortable with the approach you 're using.
Some may question the worth of the team 's goal, and they may resist taking on tasks.
Team members who stick with the task at hand may experience stress, particularly as they don 't have the support of established processes, or strong relationships with their colleagues.
Norming
Gradually, the team moves into the norming stage. This is when people start to resolve their differences, appreciate colleagues ' strengths, and respect your
References: http://en.wikipedia.org/wiki/Johari_window http://www.mindtools.com/CommSkll/JohariWindow.htm http://www.businessballs.com/johariwindowmodel.htm