Large Group Awareness Training: An Historical Context Groups associated with the human potential movement have been a controversial feature of American life during the last three decades. In the 1950's and 1960's, the movement was dominated by various types of small groups (SGs), which included sensitivity training groups, encounter groups, as well as several others (see Lieberman, Yalom, & Miles, 1973). Some people viewed SGs as an effective means for attaining personal and organizational growth, and Carl Rogers, one of the founders of this movement, labeled small groups as . . the most...