Abstract Most work on indicators of vocal confidence (and social influence work more broadly) examines linear relationships between variables. However, in some domains curvilinear (i.e., accelerating or decelerating) relationships may provide greater clarity in understanding human speech patterns. We review mixed past work on vocal speed as a case study, wherein faster vocal speed has been shown both to bolster and inhibit persuasion (e.g., by impairing processing). Across six total studies ( N total = 3,958), we show that faster speed initially increases perceived source confidence and message processing but eventually the increase attenuates or reverses. Correspondingly, vocal speed has a decelerating relationship to participants’ processing of persuasive messages, as revealed by two main processes: argument quality effects on attitudes, and the correspondence between thought valence and attitudes. The present work highlights the potential value of high-powered examinations of curvilinear relationships in non-verbal phenomenon for which speed is likely to play a role.

Joshua J. Guyer

Thomas I. Vaughan-Johnston

Leandre R. Fabrigar

Borja Paredes

Pablo Briñol

Minqian Shen

Journal of Nonverbal Behavior

JOURNAL OF NONVERBAL BEHAVIOR 对非语言行为的所有主要领域进行了同行评审的原创理论和实证研究。具体主题包括副语言、近义词、面部表情、眼神交流、面对面互动和非语言情感表达，以及有助于科学理解非语言过程和行为的其他主题。

The Journal of Nonverbal Behavior is a peer-reviewed journal that focuses on all major areas of nonverbal behavior, publishing original theoretical and empirical research. Specific topics include paralinguistics, synonyms, facial expressions, eye contact, face-to-face interactions, and nonverbal emotional expression, as well as other themes that contribute to the scientific understanding of nonverbal processes and behaviors.

《Journal of Nonverbal Behavior》是一本经过同行评审的期刊，专注于非语言行为的各个主要领域，发表原创的理论和实证研究。具体主题包括副语言、同义词、面部表情、眼神交流、面对面互动以及非语言情感表达等。此外，期刊还涵盖其他有助于科学理解非语言过程和行为的相关主题。

Category	Quartile
心理学	3
心理学, 心理学社会	4

Vocal Speed and Processing of Persuasive Messages: Curvilinear Processing Effects

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Journal Info

Category	Quartile
PSYCHOLOGY, SOCIAL	4