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Psychological Phenomena

Shared Information Bias

Social Biases and Group Effects

Shared information bias is the tendency for members of a group to spend more time and energy discussing information that every member already knows, and less time and energy discussing information that only some members know. It can lead to poor group decisions when the group never brings its unshared information into the discussion.

Facts
Core Claim
Group discussions favor information every member already holds in common over information only some members hold, so unshared facts that could improve a decision often go undiscussed. 1
Classification
Type of Phenomenon
Social or Interpersonal Phenomenon 1
Sources
1. Wikipedia: Shared Information Bias
Wikimedia Foundation
  • Lead section
    Shared information bias (also known as the collective information sampling bias, or common-information bias) is known as the tendency for group members to spend more time and energy discussing information that all members are already familiar with (i.e., shared information), and less time and energy discussing information that only some members are aware of (i.e., unshared information).
  • lead section, phenomenon-kind classification
    Shared information bias (also known as the collective information sampling bias, or common-information bias) is known as the tendency for group members to spend more time and energy discussing information that all members are already familiar with (i.e., shared information), and less time and energy discussing information that only some members are aware of (i.e., unshared information).
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