When reviewing the literature on the effectiveness of VSA in 2003, the National Research Council concluded, 'Overall, this research and the few controlled tests conducted over the past decade offer little or no scientific basis for the use of the computer voice stress analyzer or similar voice measurement instruments'. A 2002 review of the state of the art conducted for the United States Department of Justice found several technical challenges to the technology, including the same problem of determining deception. Critics have argued that-even if stress could reliably be measured from the voice-this would be highly similar to measuring stress with the polygraph, for example, and that all critiques centered on polygraph testing apply to VSA as well. Discussions about the application of VSA have focused on whether this technology can indeed reliably detect stress, and, if so, whether deception can be inferred from this stress. ![]() The use of voice stress analysis (VSA) for the detection of deception is controversial.
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