Janis's (1972) term 'groupthink' refers to conditions in which:

A) transactive memory takes over.
B) responsibility is diffused hither and thither.
C) an outgroup is dehumanised.
D) a group's goal of unanimity overrides the need to be rational.

Groupthink

A mode of thinking in highly cohesive groups in which the desire to reach unanimous agreement overrides the motivation to adopt proper rational decision-making procedures.

Unanimity

Complete agreement among all members or parties involved on a particular issue or decision.

Rational

Based on or in accordance with reason or logic; capable of making sensible or logical decisions.