Collective decision making reduces metacognitive control and increases error rates, particularly for overconfident individuals
Bibliographic Data
| ID | 12166348 |
|---|---|
| Authors | Matthew D Blanchard (0000-0001-5557-8617, School of Psychology The University of Sydney Sydney NSW Australia, corresponding author), Simon Jackson (0000-0002-1812-2925, The University of Sydney), Simon A Jackson (School of Psychology The University of Sydney Sydney NSW Australia), Sabina Kleitman (0000-0001-5772-5019, School of Psychology The University of Sydney Sydney NSW Australia) |
| Year | 2020 |
| Volume | 33 |
| Issue | 3 |
| Pages | 348-375 |
| Publication date | 2020-01-05 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Journal of Behavioral Decision Making (JOURNAL) |
| Journal identifiers | ISSN: 0894-3257 • E-ISSN: 1099-0771 |
| Publisher | Wiley (PUBLISHER • GB) |
| DOI | 10.1002/bdm.2156 |
| OpenAlex | W2997738466 |
| Language | EN |
| Citations received | 2 |
| References cited | 92 |
This research aimed to investigate the changes in judgment accuracy, confidence, control thresholds, and decision outcomes when people act in two‐person groups (dyads) compared with acting individually. First, we used interacting dyads to determine the metacognitive and behavioral outcomes of collective decision making and compared them with those of individuals. Second, we examined whether these changes were related to the trait‐confidence and bias of individuals working together. Using a within‐person design, undergraduate psychology students ( N = 116) completed a General‐knowledge Test individually, then together as a dyad. Each question was accompanied by a confidence rating and a decision to bet $10 on the answer. Dyads had significantly higher confidence and lower control thresholds than individuals. They were also significantly more decisive (made more bets) and reckless (lost a higher rate of bets) than when working alone. Thus, we observed a higher rate of decision errors for groups than individuals. The results also demonstrated the important role of individual differences: Overconfident individuals became even more confident, decisive, and reckless when working together compared with less confident or underconfident individuals working together. These findings have important theoretical and applied implications for collective decision making; metacognitive bias and potentially control thresholds may be targeted to alleviate the larger error rates and guide the formation of more effective groups
Cognition · Cognitive psychology · Control (management · Developmental psychology · Dyad · Group Decision Making · Metacognition · Overconfidence effect · Self-confidence · Trait · Behavioral Health and Interventions · Computer Science · Decision-Making and Behavioral Economics · Memory Processes and Influences · Psychology · Social Psychology
Statistical Theories of Mental Test Scores
Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences
Two-stage dynamic signal detection
Cueing and Cognitive Conflict in Judge-Advisor Decision Making
Reasons for confidence.
Probabilistic mental models
Monitoring and control processes in the strategic regulation of memory accuracy.
Optimally Interacting Minds
The Mini-Ipip Scales
Knowing with certainty
Uniting the Tribes of Fluency to Form a Metacognitive Nation
What is coefficient alpha? An examination of theory and applications.
Number of Scale Points and the Reliability of Scales
Does interaction matter? Testing whether a confidence heuristic can replace interaction in collective decision-making
A signal detection theoretic approach for estimating metacognitive sensitivity from confidence ratings
Aggregation of opinions based on correlated cues and advisors
Individual Differences in Decision Making Depend on Cognitive Abilities, Monitoring and Control
Decision Pattern Analysis as a General Framework for Studying Individual Differences in Decision Making
Decision‐making Competence, Executive Functioning, and General Cognitive Abilities
Confidence in Dyadic Decision Making
Gender differences in risk behaviour in financial decision-making
Coefficient alpha and the internal structure of tests
The Role of Individual Differences in the Accuracy of Confidence Judgments
The Social Influence of Confidence in Group Decision Making
Consciousness and metacognition
Cognitive and consensus processes in group recognition memory performance
An input-process-output analysis of influence and performance in problem-solving groups
Confidence matching in group decision-making
Group versus individual performance
A comparison of current measures of the accuracy of feeling-of-knowing predictions
| Unique citing works | 2 |
|---|---|
| Citations per year | 2 |
| Citation span | 2025 - 2026 (2) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 2 |