Identifying Group Polarization in Decision Making

In the context of group dynamics, particularly in decision-making processes, several theories illuminate how groups can influence individual choices and outcomes. Consider a scenario where a jury deliberates on a verdict in a high-profile trial. The theory suggesting that group discussions can lead to a polarizing effect on opinions, sometimes pushing individuals toward more extreme judgments than they would make independently, is known for its implications in social psychology.

Which of the following terms best describes this phenomenon, where individuals in a group may adopt more extreme positions after discussing issues as a group compared to their initial views?