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)

Analyzed group discussions associated with 68 high-quality and 29 low-quality decisions made by comparably informed groups using cross-contact comparison. Found vigilance, second-guessing, and accurate information processing associated with high-quality decisions; faulty information processing and improbable fantasy chains with low-quality…

This study aimed to examine when children come to distinguish between the private affairs of an individual and the group's matter in relation to group decision making and whether there are any differences between Japan and England in learning the distinction. In total 217 children aged 8, 11, and 13 years, and undergraduates participated in the…

Compares decision processes of consensus and devil's advocacy within an additive task, a disjunctive task, and a conjunctive task structure. Finds that high-conflict decision processes such as devil's advocacy enhances decision making in disjunctive tasks, retards decision making in additive tasks, but has no effect on decision making in…

Goldstein and Gigerenzer (2002) [Models of ecological rationality: The recognition heuristic. "Psychological Review," 109 (1), 75-90] found evidence for the use of the recognition heuristic. For example, if an individual recognizes only one of two cities, they tend to infer that the recognized city has a larger population. A prediction…

Analyzes how a new computer technology, Group Decision Support System (GDSS), affected how group decisions developed over time. Contrasts decision paths in groups using the GDSS with groups using GDSS procedural structures manually and with groups using no procedural structures. Finds that decision paths varied and were related to consensus…

Examined if making group goals of decision acceptance and quality explicit versus leaving them unstated would influence the decision-making effectiveness of male and female interacting groups. Explicitly stating that group members should strive for acceptance increased group decision-making quality and increased individual acceptance of the group…

Observed the decision-reaching and leadership behavior of children in same- amd mixed-age triads by coding their verbalizations in arriving at a consensus for their preference ranking of eight pictures. (HOD)

A study analyzed and compared four selected models in the cyclical tradition of group development as a basis for identifying possible issues and implications for future theory building. The theorists whose models were examined were Leland Bradford, Jack Gibb, William Schutz, and Theodore Mills. Both historical and conceptual perspectives of the…