An undiscussable issue is an important subject to all the group members but it is too threatening to discuss it within the group. There is various reasons due which these issues remain in the group or are left undiscussed. It may be because on a previous occasion, such issues had intensified anger amongst group members and had decreased group efficiency. Therefore, the group members avoid such topics where they can not deal with the problem productively. They also feel that if such issues are discussed then the level of trust and cohesion ...