Relationships among the speech rate, impressions regarding a speaker’s personality-traits, speech quality and impressions regarding vocational aptitude were investigated during job interviews. The recorded voices of a script read by three college students were manipulated and different versions of the script, with faster, or slower speech rates, were developed. University student participants and staff () listened to the recorded speeches and rated their impressions regarding personality-traits, speech quality and vocational aptitude of speakers. Results indicated that speakers with a moderate speech rate (ca. ) obtained the highest scores for extraversion, conscientiousness, agreeableness, openness and clarity of speech. Moreover, evaluations of vocational aptitude were positively influenced by conscientiousness, agreeableness, openness, clarity of speech and subjective speed of utterances. Extraversion influenced only impressions regarding the suitability for sales jobs. Friendliness of the speaker influenced the willingness to collaborate, whereas impressions of high job performance were not related to the willingness to collaborate. Application of these findings to speech training for job interviews is discussed.
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