Which reason contributes to group polarization according to social psychology?

Group polarization refers to the phenomenon where discussions within a group lead to an enhancement of the group's prevailing attitudes, resulting in more extreme positions. Informational influence plays a crucial role in this process because when individuals engage in discussions, they often share their viewpoints and supporting arguments. This exchange of information can lead to a convergence of opinions, as members are exposed to persuasive arguments that they may not have considered on their own.

As group members present their own perspectives and share information that reinforces the group's initial inclinations, they gain a sense of validation and social reinforcement for their views. This heightened exposure to like-minded opinions and the compelling arguments shared during discussions contribute to a stronger, more polarized group stance on those issues. In essence, the group's dynamics amplify the shared beliefs, leading to more extreme viewpoints than any individual might have held alone.