Final answer:
Groupthink is the change in thoughts, feelings, or actions due to group pressure. It occurs when individuals modify their opinions to align with the perceived group consensus, often leading to faulty decision-making.
Step-by-step explanation:
Groupthink is the change in thoughts, feelings, or actions due to real or imagined group pressure. It is the modification of the opinions of group members to align with what they believe is the group consensus. Groupthink can occur when there is a perceived unanimity among the group, and it often leads to faulty decision-making. An example of groupthink is when everyone in a group agrees on a course of action without considering alternative viewpoints.