Final answer:
Groupthink is considered negative for group decision-making processes because it suppresses dissent and can lead to poor decisions, hence teams should not strive to achieve it.
Step-by-step explanation:
The statement that teams should strive to achieve groupthink to ensure that all team members agree is false. Groupthink is a psychological phenomenon where the desire for group cohesion leads to poor decision-making because dissenting opinions and critical thinking are discouraged or suppressed. This can lead to the group making decisions that individual members might not approve of outside the group setting. Symptoms of groupthink include a perception of invulnerability, moral correctness, and self-censorship among members. To avoid groupthink, it's important to seek outside opinions, encourage private voting, and have leaders withhold their own opinions until all group members have expressed their views.