ERIC Number: ED269681
Record Type: Non-Journal
Publication Date: 1985-Aug
Pages: 25
Abstractor: N/A
ISBN: N/A
ISSN: N/A
EISSN: N/A
Voice Stress Analysis: Use of Telephone Recordings.
Waln, Ronald F.; Downey, Ronald G.
The ability to detect lying is an important skill. While the polygraph is the most common mechanical method used for lie detection, other electronic-based methods have also been developed. One such method, the analysis of voice stress patterns, is based on the assumption that lying is a stressful activity which reduces involuntary frequency modulations in the human voice. One variation of voice analysis involves recording interviews and then transmitting the recordings through the telephone to a second location where the voice is re-recorded, charted, and evaluated. Voice stress analyses were performed on 15 tape-recorded pre-employment interviews in both their original form and after they had been transmitted via telephone and re-recorded. Four expert voice stress examiners, blind to the telephone condition, reported less stress in the telephone charts than in the original charts. There was little relationship between the stress rating for the same charts in their original and telephone forms. Reliability estimates were low for both the original and telephone stress ratings. Summing over the stress ratings from individual questions and advanced training on the part of the examiners both appeared to improve the reliability estimates. The continued use of telephone recorded tapes as substitutes for the original tapes is highly questionable. In addition, these results suggest that voice analysis ratings, as they are currently used, do not show sufficient reliability to warrant their continued use as a selection procedure for employment. (NB)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Audience: Researchers
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A