This often means restraining the over-talkative, who present a range of different problems. Sometimes they are just articulate and enthusiastic people who have never considered the role of a good group member. When informed about the importance of shared thinking they will often do their best to co-operate both by modifying their own behavior and by encouraging quiet members. Others, however, know what their role should be but refuse to accept it. They may be aggressive types who think they know everything and refuse to learn, or people who like to hear the sound of their own voices, though they have little to contribute, or people with obsession, or compulsive talkers, or deliberate obstuctors or ‘ramblers’ who make long-winded, woolly statements which they can not end. The list of types is a long one and there is no one answer other than a general one of patience and politeness. The leader has to try to understand each problem case and to find an individual solution. Sometimes he will find that talking about discussion methods is helpful, either in the group or privately with an individual. As with all teaching methods, it is generally worth while with adults to spend some time in making sure that they understand the nature of the process.