No truth in lie detector tests

Lie detector tests should not be used as evidence in court because they are unreliable, and are "psychological torture" for the innocent, experts told METRO yesterday.

Qiu Baochang, one of the directors at the Beijing Bar Association and the director of Beijing Huijia Law Firm, said that according to Chinese law, lie detector tests can neither be considered as evidence nor as verification of evidence, because the technology is not accurate.

He said the environment in which the test is taken, and the emotions of the person being tested, can easily influence the test results.