I have one time served on a jury, which was for a civil case. An introvert who has interest in people, I usually pay attention to council communication style before I size up the evidence.
Those who work with me, who help me feel comfortable and clear with the information are who I will most readily be influenced by. Those who don't care about me or don't care that I understand their logic have just shot themselves in the foot.
And I am not alone here. I recall swaying two thirds of a jury to come full circle the other way. It took only 2 others to support my ideas before it happened.