Final answer:
Group polarization is the strengthening of the original group attitude after discussing views within the group. It occurs when like-minded groups reinforce the prevailing opinion.
Step-by-step explanation:
Group polarization is the strengthening of an original group attitude after the discussion of views within a group. It occurs when like-minded groups discuss a topic and the result is a reinforcement of the prevailing opinion. For example, if a group initially favors a certain viewpoint, after discussing it, the group consensus is likely to be an even stronger endorsement of that viewpoint. This phenomenon explains why groups often make more extreme decisions than individuals. If they start off leaning towards a particular viewpoint, talking it over enhances their agreement. This effect is powerful and can lead to more extreme positions within the group.