Final answer:
Groupthink is a state of excessive conformity that prevents members from expressing dissent or examining ideas critically. It can hinder opposing trains of thought and contribute to faulty decision-making.
Step-by-step explanation:
Groupthink is a state of excessive conformity that prevents members from expressing dissent or examining ideas critically. It is a phenomenon of group conformity where the opinions of group members are modified to align with what they believe is the group consensus. Groupthink can hinder opposing trains of thought and contribute to faulty decision-making by the group. It can be avoided by strategies such as seeking outside opinions, voting in private, and conducting research on all viewpoints.