In communication

Communication

Communication is the activity of conveying meaningful information. Communication requires a sender, a message, and an intended recipient, although the receiver need not be present or aware of the sender's intent to communicate at the time of communication; thus communication can occur across vast...

s and psychology

Psychology

Psychology is the study of the mind and behavior. Its immediate goal is to understand individuals and groups by both establishing general principles and researching specific cases. For many, the ultimate goal of psychology is to benefit society...

, polarization is the process whereby a social or political group is divided into two opposing sub-groups with fewer and fewer members of the group remaining neutral or holding an intermediate position.

When polarization occurs, there is a tendency for the opposing sides of an argument to make increasingly disagreeable statements, via the "pendulum effect". Thus, it is commonly observed in polarized groups, that judgments made after group discussion will be more extreme on a given subject than the average of individual judgments made prior to discussion.

Also called 'group polarization'; used to be called the 'risky shift phenomenon', with particular reference to jury

Jury

A jury is a sworn body of people convened to render an impartial verdict officially submitted to them by a court, or to set a penalty or judgment. Modern juries tend to be found in courts to ascertain the guilt, or lack thereof, in a crime. In Anglophone jurisdictions, the verdict may be guilty,...

decision-making.