http://www.jsonline.com/story/index.aspx?id=423664
LINDA SPICE
"Critics question reliability of voice stress analyzer. Some argue that using the voice stress analyzer is no better than a coin flip. Advocates contend that its psychological value during questioning can lead to a confession or eliminate a person as a suspect. They say it's a less expensive, time-efficient alternative to the polygraph, which records blood pressure, respiration and electro-dermal activity, or sweating, and requires eight weeks of training, compared with the six days of training for the stress analyzer."
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