We illustrate the idiographic/nomothetic debate by comparing 3 approaches to using daily self-report data on affect for predicting relationship quality and breakup. The 3 approaches included (a) the first day in the series of daily data; (b) the mean and variability of the daily series; and (c) parameters from dynamic factor analysis, a…

We develop a Roy model of social interactions in which individuals sort into peer groups based on comparative advantage. Two key results emerge: First, when comparative advantage is the guiding principle of peer group organization, the effect of moving a student into an environment with higher-achieving peers depends on where in the ability…

Examines the relationship between internal communications and organizational learning and considers the effects of national differences in work organization on differences in internal communications, learning, and new product development. Compares small group performance in American startups, smaller Italian companies, and Japanese management…

We consider group decision-making on an optimal stopping problem, for which large and stable individual differences have previously been established. In the problem, people are presented with a sequence of five random numbers between 0 and 100, one at a time, and are required to choose the maximum of the sequence, without being allowed to return…

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…

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…

Findings suggest that extroverts are more likely to be susceptible to behavioral contagion, i.e., spontaneous imitation of another's behavior, than introverts. (Author)

Examines conditions which predipose group members to seek redress for a perceived injustice by forming an alliance against a group leader. Predicts that: (1) coalition attempts will be more frequent in unfair cases than in fair ones; (2) members of a revolutionary coalition will attempt to restore equity under specified conditions; and (3)…

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…

Explores the reactions of single persons and small groups-each in a room they had territorialized- and to compare these against the reactions of singles and small groups who were in a comparable room which they had not territorialized. (Author)

Presents a study that investigated whether the presence of a group goal would reduce social matching. Reports that when there was no specific goal, the participants matched their own performance to the performance that was expected of other group members. Include references. (CMK)

Tests the hypothesis that cognitive-experiential pretraining is beneficial in promoting openness and honesty among members of a psychotherapy group. The hypothesis is supported. (HMV)

Differences were investigated between communication behaviors of small groups trained or not trained in creative problem-solving. The 110 members of groups trained in problem solving participated more, criticized ideas less, supported ideas more, exhibited more verbal and nonverbal indications of humor, and produced more ideas than the 90…