This article unpacks the basic mechanisms by which paralinguistic features communicated through the voice can affect evaluative judgments and persuasion. Special emphasis is placed on exploring the rapidly emerging literature on vocal features linked to appraisals of confidence (e.g., vocal pitch, intonation, speech rate, loudness, etc.), and their subsequent impact on information processing and meta-cognitive processes of attitude change. The main goal of this review is to advance understanding of the different psychological processes by which paralinguistic markers of confidence can affect attitude change, specifying the conditions under which they are more likely to operate. In sum, we highlight the importance of considering basic mechanisms of attitude change to predict when and why appraisals of paralinguistic markers of confidence can lead to more or less persuasion.

本文揭示了通过声音传达的副语言特征影响评价判断和说服的基本机制。特别强调探索与信心评估相关的声音特征（例如，音调、语调、语速、响度等）的快速新兴文献，及其对信息处理和态度改变的元认知过程的后续影响。本次综述的主要目标是增进对不同心理过程的理解，通过这些过程，信心的副语言标记可以影响态度改变，并明确它们更有可能发挥作用的条件。总之，我们强调考虑态度改变的基本机制的重要性，以预测何时以及为何对副语言信心标记的评估可以或多或少地产生说服力。