The following points are examined in detail: the characteristics of the group and the group leader, the position of the person within the group, attitudes and knowledge structures, current affective and motivational state, freedom of choice, and characteristics of information. ###>The following points are examined in detail: the characteristics of the group and the group leader, the position of the person within the group, attitudes and knowledge structures, current affective and motivational state, freedom of choice, and characteristics of information.