Discusses the definition and origin of the term "groupthink." Examines three studies on groupthink by John Courtright (1978), Matie Flowers (1977), and Philip Tetlock (1979). Concludes none of the three is superior to another but that it can be learned from all three that group decision making is fraught with danger. (ABL)

Claims that group cohesiveness has proven to be astonishingly difficult to define precisely and consistently, although it remains a critical group-level variable. Notes that some researchers rely on classic definitions while others leave it undefined. Suggests that greater focus on the definitional issue should improve the quality of future…

Used causal modeling procedures to investigate the relationship between cohesion and productivity in 54 recently formed work groups within the framework of a nine-month longitudinal field study. Results support the central role of group acceptance of organizational goals in determining both productivity and cohesion. (Author/ABL)

Metaphorical analysis of small group interactions enables researchers and practitioners to isolate, identify, and intervene with the current social reality of the group. This heuristic study offers one view of the specific meaning structures which account for the development of group cohesiveness. (BL)

Investigated the relationship of group cohesiveness to empathy, self-disclosure, acceptance, and trust, and compared three different groups (personal growth, driving under the influence, psychotherapy), with a total of 65 subjects, on measures of cohesiveness. Found all factors correlated significantly with cohesiveness and with one another.…

Examined the relationship between group processes and group performance and cohesion in task and social groups using college students (N=160) as subjects. Found results supported the conceptual distinction between cohesion and performance and the importance of processes dealing with both the task and group maintenance. (Author/ABL)

The effects of different group processes on team performance is examined using a formative evaluation. A taxonomy of six different decision-making and leadership styles is developed. Cohesion was found to be a significant factor in explaining high performance. (Author/BL)

To assess the effect of feedback combinations in group interactions, 28 college students participated in a two hour workshop and then completed feedback ratings. Results indicated differences in credibility, desirability, cohesion, and evaluation, with the positive-negative-positive feedback combination being most effective. (BL)

Investigated self-disclosure in college students (N=144) who were assigned to groups of four receiving either a self-disclosure or placebo treatment. Found self-disclosure intervention resulted in significantly higher group cohesiveness, commitment to task and productivity; females demonstrated greater cohesiveness and commitment to task than did…

Examined acceptance and congruence in four Tavistock groups consisting of college student volunteers (N=30) using scales measuring curative factors, group process, and congruence. Found participants with higher rankings on the group acceptance measures experienced greater degrees of congruence following the group experience. Discusses implications…

Conducted two studies in which subjects (N=216) faced the dilemma of how to harvest resources from a shared pool when faced with external catastrophies and given opportunities to steal. Results showed that tying the individual's outcome to the rest of the group is good for the group. (LLL)