Talking fast and changing attitudes: A critique and clarification

Previous research on the effects of vocal rate on credibility and persuasion has not carefully considered several methodological and theoretical issues. An investigation was conducted that controlled for a number of methodological factors, and considered different explanatory possibilities. Results indicated more complex and constrained relationships between rate of vocalization, credibility, and persuasion than some previous research had found, and were consistent with research in the person perception literature. Support for a straightforward credibility bolstering explanation was not found, and other explanatory rationales were considered.

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