High Quality Content by WIKIPEDIA articles! Group decision making (also known as collaborative decision making) is a situation faced when individuals collectively make a choice from the alternatives before them. This decision is no longer attributable to any single individual who is a member of the group. This is because all the individuals and social group processes such as social influence contribute to the outcome. The decisions made by groups are often different from those made by individuals. Group polarization is one clear example: groups tend to make decisions that are more extreme than those of its individual members, in the direction of the individual inclinations.