問題詳情

英文6
Most of us have heard of the polygraph test, more commonly known as a lie-detector test. In this
test, the detectors record a person’s physiological reactions to certain questions. That is, a pair of plates
that can sense and measure subtle increases in sweating is attached to a person’s fingers, while at the
same time other devices monitor increases in blood pressure and pulse rate as well as breathing depth. In
administering the test, examiners usually ask neutral questions such as birth dates and addresses in order
to compare these responses with those from emotionally charged questions. While the polygraph is the
most common and long used measure, factors such as hunger or alcohol use can cause misleading
polygraph results. Minor self-inflicted pain during the test can also result in false positives.
Another technology, the electroencephalograph (ECG), is also used to detect lies, but in quite a
different way. As it turns out, one particular brain wave, which researchers have isolated and can graph,
surges whenever we see something we recognize. It’s impossible for any person to voluntarily suppress
this surge. So, when a crime suspect wearing a special headband hooked up to an ECG machine is
shown images or words connected with the crime and the brain wave suddenly spikes, the suspect’s
brain is essentially shouting, I’m guilty!
Moreover, a newer form of lie detector is far simpler than any other technology, aside from simply
observing body language. People cannot help hesitating ever so briefly just before telling a lie. With
modern computer technology, we can now detect and measure the briefest such pauses, which tell us
when someone is lying.

46. Which of the following would be the most appropriate title for the passage?
(A) How to Cheat on a Lie Detector Test
(B) Do Polygraph Tests Always Reveal Lies?
(C) In Search of the Perfect Lie Detector
(D) The Technology of Crime Investigation
(E) Pathology Tests vs. ECG Tests

參考答案

答案：C
難度：困難0.323529
統計：A(1),B(9),C(11),D(12),E(1)

內容推薦

內容推薦