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测谎仪真的有效吗?

We Tried To Beat A Lie Detector Test

[解说员]:你可能见过这个设备
– [Narrator] You’ve probably seen this device before.
这是多导记录仪
This is a polygraph
它另一个名字更广为人知 测谎仪
which is more popularly known as a lie detector.
但它的测谎频率
But just how often it can catch you in a lie
却存在争议
is debatable.
[欢快的音乐]
(lively music)
在美国 每年会有上千台测谎仪
Thousands of polygraphs are given each year in the U.S. alone
来为政府秘密审查
for everything from government clearance screenings
进行审核确认
to witness verification.
但这些设备的检测结果
And the power of these machine’s results
却并不会被轻易采用
are not taken lightly.
人们很可能在一次失误的测试后
People have reportedly losttheir jobs and reputations
失去工作和名誉
over a failed exam.
但这个设备到底是如何运作的?
But how exactly does this machine work?
测谎仪的结果真的准确吗?
And is it really as accurateas polygraph examiners claim?
为了得到答案 我们决定
To find out we decidedto
用测谎仪来测试自己
put the polygraph to the test ourselves.
– 我只会提问我们讨论过的问题 了解么?
– Do you understand I’ll only ask you the questions that we discussed.
– 了解
– Yes.
-[解说员]:自1923年起 测谎仪的结果
– [Narrator] Polygraphresults haven’t been accepted
并不为法院所接受 主要是因为——
in most state courts since1923 mainly because–
– 有科学研究暗示
– The scientific researchsuggests that
测谎仪存在很大的科学漏洞
the polygraph has significant scientific problems.
也就是说 它并不像我们认为的那样
That is, it may not giveus the level of accuracy,
能给我们提供精准 具体 灵敏的信息
specificity and sensitivity that we think it will,
它还是存在不确定性
and that could be problematic.
– [解说员]仍有很多拥护者争论道
– [Narrator] Still manydefenders contest that
尽管测谎仪做不到100%准确
even though the polygraph isn’t100% accurate,
DNA测试和目击证人证词也做不到
neither is DNA testing or eye witness testimonies.
– 你打算诚实地回答每个问题吗?
– Do you intend to answereach question truthfully?
– 是的
– Yes.
-[解说员]现在测谎仪可能检测到了
– [Narrator] Now what theexaminer may or may not know
也可能没有检测到我的第一个谎言
is I’ve already told my first lie.
接下来要做的是
So what we are going to do
试着说谎
is try and lie and see
看看它能不能检测出来
if she can detect the lie.
在检测过程中
There are going to bequestions that she asks me
她会问我很多问题
in ways over the course of the exam
在回答其中一个问题时
and one of them
我会故意说谎
I am going to deliberately lie on
看看它 能不能发现
and see if she can figure it out.
你现在是坐着的么?
– Are you sitting down?
是的
– Yes.
操纵检测结果的方法之一是
One of the ways you canmanipulate the machine’s results is
控制你的呼吸
by controlling your breathing,
确保你在测试的过程呼吸平稳
making sure you have calm breathing during the course of the exam.
在进行测试的前几周
I’ve done a few breathingexercises
我专门为此做了准备
over the course of the week
事先做呼吸练习
to prepare for this.
当我想要说谎时
So when I get that questionthat I know I’m going to lie on,
我就会控制呼吸 让它正常而平稳
I’m going to make sure that my breathing is nice and calm.
至少我试着这么去做
Or at least I’m going to try.
过去三年你有吸食过毒品么?
– Have you used any illegal drugs in the last three years?
没有
– No.
你犯过重罪么?
– Did you ever commit a serious crime?
你是否在一份未公开的工作中被解雇?
Were you ever terminated from a job that you did not disclose?
至今你是否做过让自己羞耻的事?
In your whole life, did you ever do something you’re ashamed of?
至今你是否发过脾气?
In your whole life, didyou ever lose your temper?
这间房间的灯是亮着的么?
Are the lights on in this room?
[解说员]好的 测试结束
– [Narrator] Okay, the test is over.
我们来看看它有没有检测到我说谎
Let’s see if she caught my lie.
你放松时 曲线是下降的
– You were relaxed, it’s going down,
从这里开始 曲线上升了
and then when it begins here, it’s going back up again.
-那很有趣-这说明你在说谎
– That’s so interesting.- So it’s a lie.
[解说员]是的 测谎仪检测到我说谎了
– [Narrator] So yep,the polygraph caught me.
现在明白了
Now to be clear, thistype of test is similar to
这种测试和普通面试差不多
what’s normally administeredfor job interviews.
这其中的利害关系不那么强
Meaning the stakes are lower
精确度也不会那么高
and the accuracy rate isn’t as high.
不管怎样 它抓到我说谎了
And it caught me, anyway.
但是很难知道
But it’s hard to know
这对一般人 是否有效
if this is the case for your average person.
尽管我在控制呼吸
Even though I worked oncontrolling my breathing
那还是会让我的心率上升
what really got me wasmy increased heart rate,
出汗 血压升高
perspiration and blood pressure.
如果我花更多时间
So who knows what wouldhave happened
想办法控制这些体征
if I’d spent a little more time .
那会发生什么呢
trying to figure out how to control those things
这种不确定
And that uncertainty ispretty much why most state courts
是法院不相信测谎仪的原因
try to steer clear of polygraphs.
因为大家都知道结果是可以人为改变的
Because it’s known thatpeople can and have beat it.
我对测谎仪态度中立
– I’m of two minds about the polygraph.
对它的使用持保留意见
I have serious reservationsabout its use,
但它在某些方面还是很实用的
but I can see that it might havesome utility in some
但不是在所有情况下
but certainly not all contexts
我认为我们需要相对保守
and I think we need to be pretty conservative
谨慎地使用它
and cautious about its use.

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视频概述

测谎仪真的能检测说谎么?一起来看看吧!

听录译者

收集自网络

翻译译者

素履以往

审核员

审核员 EY

视频来源

https://www.youtube.com/watch?v=ZjvBl1cCUF8

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