Table 2. Eight key principles of group dynamic theory¹⁴.

Principle	Description
1	If the group is to be used effectively as a medium of change, those people who are to be changed and those who are to exert influence for change must have a strong sense of belonging to the same group.
2	The more attractive the group is to members the greater is the influence that the group can exert on its members.
3	In attempts to change attitudes, values, or behavior, the more relevant they are to the basis of attraction to the group, the greater will be the influence that the group can exert upon them.
4	The greater the prestige of a group member in the eyes of other members, the greater the influence they can exert.
5	Efforts to change individuals or subparts of a group which, if successful, would have the result of making them deviate from the norms of the group will encounter strong resistance.
6	Strong pressure for changes in the group can be established by creating a shared perception by members of the need for change, thus making the source of pressure for change lie within the group.
7	Information relating to the need for change, plans for change, and consequences of change must be shared by all relevant people in the group.
8	Changes in one part of a group produce strain in other related parts which can be reduced only by eliminating the change or by bringing about readjustments in the related parts.