What is the effect of good posture on audience perception?

Good posture plays a significant role in how an audience perceives a speaker. When a speaker stands tall, with shoulders back and head held high, it sends a nonverbal message of confidence and authority. This physical stance not only enhances the speaker's credibility but also makes them appear more charismatic and engaging to the audience. The visual cues associated with good posture can foster trust and acceptance, which are critical elements in effective communication.

In contrast, other options do not directly relate to the core effect of good posture on audience perception. While posture can contribute to vocal projection and influence memory, those elements are secondary to how posture specifically impacts the audience’s view of the speaker's confidence and authority. Good posture itself doesn't necessarily increase the duration of a speech or aid in memory retention, but it primarily functions as a fundamental component of how a speaker is perceived in terms of their presence and persuasive ability.