ABSTRACT
One of the most conspicuous aspects of groups is that they have structure. This appears from a study of Bales (1950), who observed problem-solving groups having group members who were previously unacquainted with one another. He established that some group members were more active in making problemsolving attempts than others. These group members were also most frequently addressed, and afterward their ascribed leadership was higher than that of group members who were less active (Stein & Heller, 1979).
