Dean A. Pollina
Douglas A. Vakoch
Lee H. Wurm
Dept. of Psychol., State Univ. of New York at Stony Brook, Stony Brook, NY 11794-2500
Deception has been shown to be associated with changes in the fundamental frequency (F0) of vocalizations. For example, during attempted deception, F0 typically increases [P. Ekman, W. V. Friesen, and K. R. Scherer, Semiotica 16, 23--27 (1976); L. A. Streeter, R. M. Kraus, V. Geller, C. Olson, and W. Apple, J. Pers. Soc. Psychol. 35, 345--350 (1977)]. The current study examines changes in F0 for the identical utterances at two points in time: prior to establishing any belief about the statement, and after having a belief. By analyzing the same phrase at baseline and after the belief manipulation, more precise measurements corresponding to belief can be made than in previous studies.