The risk level of group decisions often differs from the mean risk level of individual group members' decisions.This is called

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Group polarization is the tendency for group decisions to be more extreme in risk or caution than the mean risk level of individual group members' decisions. This occurs due to a number of factors, including social comparison and confirmation bias. Process loss refers to inefficiencies in group decision-making that result from factors such as communication breakdowns or conflicts within the group. Group cohesiveness refers to the degree to which group members are committed to the group and its goals, and can influence decision-making but does not necessarily determine the level of risk taken. Social inhibition refers to the phenomenon of individuals performing worse on tasks in the presence of others.

The Risk Level of Group Decisions Often Differs from the Mean