Related Experiment Video
Updated: May 20, 2025

The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies
Published on: August 25, 2023
Disagreeing Perspectives Enhance Inner-Crowd Wisdom for Difficult (but Not Easy) Questions.
Philippe P F M Van de Calseyde1, Emir Efendić2
1Department of Industrial Engineering and Innovation Sciences, Eindhoven University of Technology.
Encouraging disagreement within groups improves accuracy on difficult questions but harms accuracy on easy ones. This finding highlights the importance of question difficulty in collective intelligence research.
Area of Science:
- Social Psychology
- Cognitive Science
- Collective Intelligence
Background:
- Previous research suggested that adopting a disagreeing perspective enhances the accuracy of group estimates by increasing diversity.
- A recent reanalysis challenged these findings, indicating no accuracy improvement and suggesting the role of question variability.
Purpose of the Study:
- To reconcile conflicting findings in inner-crowd research regarding the effect of disagreeing perspectives on accuracy.
- To investigate the moderating role of question difficulty in the relationship between disagreeing perspectives and estimation accuracy.
Main Methods:
- Conducted three preregistered experiments with a total of 2,884 online adult participants from the US and UK.
- Differentiated between easy and difficult questions to assess their impact on the effectiveness of disagreeing perspectives.
Main Results:
- Results confirmed that taking a disagreeing perspective is beneficial for difficult questions.
- Conversely, adopting a disagreeing perspective was found to be detrimental to accuracy on easier questions.
Conclusions:
- Question difficulty is a critical factor that moderates the impact of disagreeing perspectives on the accuracy of aggregate estimates.
- Future interventions aimed at enhancing collective intelligence through diversity should consider question difficulty as a key variable.
Related Concept Videos
Groupthink
In- and Out-Groups
Cognitive Dissonance
Criticisms of the Evolutionary Perspective
Evolutionary psychology provides one explanation for these findings, suggesting...
Confirmation Biases
Critical Thinking
Colleges and universities are...

