Common information effect is a problem in group decision making process that occurs when a group only recognizes and prioritizes information that is shared and available for all group members.
Strategies that do NOT work
These strategies do not help mitigate common information effect:
Strategies that work
Source: Postmes et al. (2001), Stasser and Stewart (1992), Hollingshead (1996), Stasser et al. (2000)
Participation as a function of group size
Source: Shaw, M.E. Group dynamics: The psychology of small group behavior, 3rd Edition. New York McGraw-Hill:170
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