他已和调查人员见了四次面，并提出接受测谎测试。
He has met with investigators four times and has offered to take a polygraph test.
方法：以42名大学生作为被试，运用照片再认法，以不同认知任务为素材进行测谎测试。
Methods: 42 university students participated in the study. They were provided with tasks that elicited different levels of cognition by means of photo recognition in polygraph test.
至少在经过严格测试之前，使用机器测谎带来的问题仍然存在。
Problems surround the use of machines to spot deception, at least until it has been rigorously tested.
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