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Related Concept Videos

Bias01:22

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Bias refers to any tendency that prevents a question from being considered unprejudiced. In research, bias occurs when one outcome or answer is selected or encouraged over others in sampling or testing. Bias can occur during any research phase, including study design, data collection, analysis, and publication.
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Related Experiment Video

Updated: Aug 15, 2025

Assessment of Social Cognition in Non-human Primates Using a Network of Computerized Automated Learning Device ALDM Test Systems
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Ingroup bias in a social learning experiment.

Wenbo Zou1,2, Xue Xu3,2

  • 1Institute of State Economy, Nankai University, Weijin Road 94, Tianjin, 300071 China.

Experimental Economics
|January 2, 2023
PubMed
Summary

Group identity influences social learning. Individuals weigh information from ingroup members more heavily, impacting subsequent private information processing and decision-making heuristics.

Keywords:
Belief updatingIngroup biasLaboratory experimentSocial learning

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Area of Science:

  • Behavioral Economics
  • Social Psychology
  • Decision Sciences

Background:

  • Social learning is crucial for information acquisition.
  • Group identity can significantly influence social interactions and decision-making.
  • Understanding how group dynamics affect information processing is key.

Purpose of the Study:

  • To investigate if social learning and private information processing differ based on shared group identity.
  • To determine the impact of ingroup versus outgroup observation on information weighting.

Main Methods:

  • A laboratory experiment was conducted.
  • Subjects observed a social signal followed by a private signal.
  • Group identity was experimentally induced to differentiate ingroup and outgroup predecessors.

Main Results:

  • Subjects assigned greater weight to social signals from ingroup members compared to outgroup members.
  • This ingroup bias was not explained by beliefs about the predecessor's rationality.
  • Group identity affected private signal weighting: ingroup observation led to greater weight on contradictory private signals and less on confirming ones.

Conclusions:

  • Shared group identity enhances the impact of social signals.
  • Group identity acts as a framing device, influencing decision heuristics during social learning.
  • These effects on information weighting change when individuals process subsequent private information.