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Dilated pupils reveal dishonesty

Researchers at the University of Utah are using eye-tracking technology as an alternative to the polygraph for lie detection.
Researchers at the University of Utah are using eye-tracking technology as an alternative to the polygraph for lie detection.


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Researchers at the University of Utah are using eye-tracking technology as an alternative to the polygraph for lie detection, The Gaea Times reported.

Using eye movement to detect lies contrasts with polygraph testing. Instead of measuring a person's emotional reaction to lying, eye-tracking technology measures cognitive reaction. The researchers determined that lying requires more work than telling the truth, so they watch for indications that the subject is working hard. For example, a person who is being dishonest may have dilated pupils and take longer to read and answer the questions. The researchers record a number of measurements while a subject is answering a series of true-and-false questions on a computer. The measurements include pupil dilation, response time, reading and rereading time, and errors.

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新型眼球測謊儀問世

?????? 《蓋亞時報》報道,美國猶他大學的實驗人員正在運用眼球追蹤的方法對人進行測謊。

?????? 通過觀察眼球運動來測謊與傳統的測謊儀原理不同。傳統的測謊儀是測量人說謊時的情緒反應,而眼球追蹤技術是測量人的認知反應。研究人員認為人在撒謊時要比說真話“多花一點心思”,所以他們尋找受測人動心思的跡象。比如說,一個正在說謊的人可能瞳孔放大并且看問題和回答問題的時間更長。研究人員讓受測人在計算機上回答一系列是非題并記錄下一些測量項目,包括瞳孔放大、回答時間、閱讀和反復閱讀時間以及錯誤等等。

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