Who are the least effective communicators of the group in twelve angry men and why?

In "Twelve Angry Men," Juror 3 and Juror 7 can be seen as the least effective communicators. Juror 3 is driven by personal bias and emotional outbursts, which cloud his judgment and hinder constructive dialogue. Meanwhile, Juror 7 is disengaged and more focused on his own interests than the deliberation process, leading to a lack of meaningful contribution. Their inability to engage thoughtfully with the evidence and other jurors stifles productive communication in the group.