MEASUREMENT OF DECEPTIVE VOICES - COMPARING ACOUSTIC AND PERCEPTUAL DATA

This study compared vocal features of deception that can be measured b y acoustic equipment with vocal features of deception that can be meas ured perceptually by human coders. As deception researchers have tradi tionally measured vocal behavior with either acoustic or perceptual me thods (but not both), it is uncertain what correspondence, if any, exi sts between these methods. This study attempted to determine the degre e of this correspondence. Deceptive interactions from an earlier study (Burgeon, Buller, Ebesu, & Rockwell, 1994) were used to conduct a det ailed analysis of the vocal features of deceptive speech. The vocal sa mples were analyzed perceptually and acoustically. Results indicated m oderate correlations between some acoustic and perceptual variables; n either measurement type, however, proved conclusively superior to the other in discriminating between truth and deception.