Which of the following is a hallmark of groupthink?

A hallmark of groupthink is characterized by a high degree of cohesiveness among group members. In a groupthink scenario, the strong ties and harmony within the group often lead to a desire for consensus that overrides critical thinking and the consideration of diverse viewpoints. This cohesiveness can result in a lack of critical evaluation of ideas, as group members may suppress dissenting opinions to maintain agreement and solidarity.

While a united group can be positive in many contexts, in the case of groupthink, this strong social bond can inhibit open dialogue, leading to poor decision-making. The other options highlight characteristics that counteract groupthink, as open discussion of ideas and encouragement of dissenting opinions promote critical evaluation and help prevent the pitfalls of conformity that arise in highly cohesive groups.