The language of deception: analysing statements and spotting lies

B2
90 min
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1

Think about these questions before watching. Share your ideas with a partner.

  1. Think about a time you told a 'white lie' to avoid hurting someone's feelings. In what kinds of situations do you think this is acceptable, and where do you draw the line?
  2. What are some common signs or 'tells' that might suggest someone isn't being completely truthful? Consider their body language, tone of voice, and the way they phrase things.
  3. In professional or public life, from advertising to politics, we often encounter statements that are not entirely factual. How does this 'professional dishonesty' affect our trust in institutions or brands?
2

Watch the video carefully. Pay attention to the main ideas and key details.

Video script104 segments · click a timestamp to jump

"Sorry, my phone died."

"It's nothing. I'm fine."

"These allegations are completely unfounded."

"The company was not aware of any wrongdoing."

"I love you."

We hear anywhere from 10 to 200 lies a day,

and we spent much of our history coming up with ways to detect them,

from medieval torture devices to polygraphs,

blood-pressure and breathing monitors, voice-stress analyzers,

eye trackers, infrared brain scanners,

and even the 400-pound electroencephalogram.

But although such tools have worked under certain circumstances,

most can be fooled with enough preparation,

and none are considered reliable enough to even be admissible in court.

But, what if the problem is not with the techniques,

but the underlying assumption that lying spurs physiological changes?

What if we took a more direct approach,

using communication science to analyze the lies themselves?

On a psychological level, we lie partly to paint a better picture of ourselves,

connecting our fantasies to the person we wish we were

rather than the person we are.

But while our brain is busy dreaming, it's letting plenty of signals slip by.

Our conscious mind only controls about 5% of our cognitive function,

including communication,

while the other 95% occurs beyond our awareness,

and according to the literature on reality monitoring,

stories based on imagined experiences

are qualitatively different from those based on real experiences.

This suggests that creating a false story about a personal topic takes work

and results in a different pattern of language use.

A technology known as linguistic text analysis

has helped to identify four such common patterns

in the subconscious language of deception.

First, liars reference themselves less, when making deceptive statements.

They write or talk more about others, often using the third person

to distance and disassociate themselves from their lie,

which sounds more false:

"Absolutely no party took place at this house,"

or "I didn't host a party here."

Second, liars tend to be more negative,

because on a subconscious level, they feel guilty about lying.

For example, a liar might say something like,

"Sorry, my stupid phone battery died. I hate that thing."

Third, liars typically explain events in simple terms

since our brains struggle to build a complex lie.

Judgment and evaluation

are complex things for our brains to compute.

As a U.S. President once famously insisted:

"I did not have sexual relations with that woman."

And finally, even though liars keep descriptions simple,

they tend to use longer and more convoluted sentence structure,

inserting unnecessary words

and irrelevant but factual sounding details in order to pad the lie.

Another President confronted with a scandal proclaimed:

"I can say, categorically, that this investigation indicates

that no one on the White House staff,

no one in this administration presently employed

was involved in this very bizarre incident."

Let's apply linguistic analysis to some famous examples.

Take seven-time Tour de France winner Lance Armstrong.

When comparing a 2005 interview,

in which he had denied taking performance-enhancing drugs

to a 2013 interview, in which he admitted it,

his use of personal pronouns increased by nearly 3/4.

Note the contrast between the following two quotes.

First: "Okay, you know, a guy in a French, in a Parisian laboratory

opens up your sample, you know, Jean-Francis so-and-so, and he tests it.

And then you get a phone call from a newspaper that says:

'We found you to be positive six times for EPO."

Second: "I lost myself in all of that.

I'm sure there would be other people that couldn't handle it,

but I certainly couldn't handle it,

and I was used to controlling everything in my life.

I controlled every outcome in my life."

In his denial, Armstrong described a hypothetical situation

focused on someone else,

removing himself from the situation entirely.

In his admission, he owns his statements,

delving into his personal emotions and motivations.

But the use of personal pronouns is just one indicator of deception.

Let's look at another example from former Senator

and U.S. Presidential candidate John Edwards:

"I only know that the apparent father has said publicly

that he is the father of the baby.

I also have not been engaged in any activity of any description

that requested, agreed to, or supported payments of any kind

to the woman or to the apparent father of the baby."

Not only is that a pretty long-winded way to say, "The baby isn't mine,"

but Edwards never calls the other parties by name,

instead saying "that baby," "the woman," and "the apparent father."

Now let's see what he had to say when later admitting paternity:

"I am Quinn's father.

I will do everything in my power to provide her

with the love and support she deserves."

The statement is short and direct,

calling the child by name and addressing his role in her life.

So how can you apply these lie-spotting techniques to your life?

First, remember that many of the lies we encounter on a daily basis

are far less serious that these examples, and may even be harmless.

But it's still worthwhile to be aware of telltale clues,

like minimal self-references, negative language,

simple explanations and convoluted phrasing.

It just might help you avoid an overvalued stock,

an ineffective product, or even a terrible relationship.

3

Answer these questions in your own words. Support your answers with evidence from the video.

01According to the video, what is the main flaw in the assumption behind traditional lie detection tools like polygraphs?
Sample answerThe main flaw is that they assume lying causes physical changes, like a higher heart rate or different breathing. The video explains that this isn't always true because people can learn to control those physical reactions, which means the tools can be fooled.
02In what way do liars use both simple explanations and complex sentences at the same time?
Sample answerThe video says that the core story of a lie is usually simple because it's difficult for our brains to invent a complex false story. However, liars often use long, convoluted sentences with unnecessary words to deliver that simple explanation, trying to make it sound more credible.
03How does the comparison of Lance Armstrong's two interviews demonstrate one of the key signs of deception?
Sample answerIt demonstrates how liars use fewer self-references. When he was lying, Armstrong talked about a hypothetical 'guy in a French laboratory' instead of himself. When he admitted the truth, his language was full of personal pronouns like 'I', showing he was taking ownership of his story.
04Why does the video suggest that spotting these linguistic clues is useful, even for lies that seem harmless?
Sample answerBecause even though many daily lies aren't serious, the same patterns can appear in high-stakes situations. Being aware of these clues could help you identify a bigger problem, like avoiding a bad financial decision or recognizing an issue in a relationship.
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Key vocabulary for discussing deception

Vocabulary
These expressions will help you communicate more naturally and precisely about this topic.
to stretch the truth — to say something that is not completely honest, often to make a story or situation seem more interesting or impressive.
Usage note: This is a softer, more informal way to talk about lying, often used when the lie isn't considered very serious. For example, 'He tends to stretch the truth when telling stories about his travels.'
a dead giveaway — a sign or piece of information that clearly reveals something that was meant to be a secret.
Usage note: Use this to talk about the clues that expose a lie. A common structure is 'The dead giveaway was...'. For example, 'His nervous laughter was a dead giveaway that he wasn't telling the truth.'
to take something with a grain of salt — to understand that something is probably not completely true or accurate; to be skeptical.
Usage note: This idiom is useful for expressing doubt about a statement. For example, 'You should take his promises with a grain of salt.' In British English, 'pinch of salt' is also common.
to cover one's tracks — to hide or destroy evidence of something you have done, especially something wrong or illegal.
Usage note: This phrase describes the actions someone takes to hide a lie or a bad action. For example, 'The politician tried to cover his tracks, but the journalist uncovered the scandal.'
to come clean (about something) — to finally admit the truth about something you have been keeping secret.
Usage note: This phrasal verb is often used when someone confesses after a period of deception. It's usually followed by 'about'. For example, 'After weeks of questioning, the employee finally came clean about taking the money.'
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Decide if each statement is true or false based on the video. Correct the false ones.

01The video claims that the average person is exposed to between 10 and 200 lies on a daily basis.
02According to the video, our conscious mind is responsible for about 95% of our cognitive functions.
03One of the linguistic patterns of deception is that liars tend to use more positive language to make their story sound more convincing.
04The video suggests a primary psychological reason for lying is to present a better version of oneself.
05Traditional lie detection tools like polygraphs are considered reliable enough to be used as evidence in most court cases.
6

Complete the sentences with words from the box. One word is extra.

Word bank
01To say he's a professional artist is to the truth a bit; he's only sold one painting.
02The fact that he couldn't look me in the eye was a complete that he was lying.
03He's known for exaggerating, so I'd take his story about meeting a celebrity with a grain of .
04The politician tried to cover his by deleting all the emails, but the investigators found them anyway.
05After weeks of guilt, she decided to come with her parents about borrowing the car without permission.
7

Choose the best answer based on what you heard in the video.

01According to the video, what is the core idea behind 'reality monitoring'?
02What specific linguistic technique did John Edwards use in his initial denial, according to the video's analysis?
03The video suggests a primary psychological motivation for lying is to...
04Which of the following is NOT described in the video as a linguistic pattern of deception?
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Idioms about honesty and deception

Many English idioms are used to talk about telling the truth and lying. Can you match the two halves of these common expressions?

Match each item on the left with the correct item on the right.

Drag or click to match
Definitions
9

Discuss these questions with a partner. Try to use vocabulary from the lesson.

  1. Imagine a future where technology can reliably detect lies just by analyzing someone's words, as suggested in the video. Do you think this would be a positive development for society? Consider its use in legal systems, politics, and personal relationships. At what point does this technology become an invasion of privacy?
  2. Thinking about your own culture, are there specific social or professional situations where people are expected to 'stretch the truth' to be polite or diplomatic? Conversely, are there situations where complete honesty is demanded, even if it's uncomfortable? How might a foreigner need to 'take things with a grain of salt' when communicating in your country?
  3. The video states we often lie to 'paint a better picture of ourselves'. How has the rise of social media affected this tendency? Discuss the pressure to present a perfect life online and what you consider a 'dead giveaway' that someone's online profile isn't entirely authentic.