Luckily, there are signs we can look for when trying to detect a lie. Dr. Lillian Glass, a behavioral analyst and body language expert who has worked with the FBI on unmasking signals of deception, says when trying to figure out if someone is lying, you first need to understand how the person normally acts. Then you'll want to pay careful attention to their facial expressions, body language, and speech patterns, she writes in her book "The Body Language of Liars."

1. How to tell if someoneHow to tell if someone
is Lyingis Lying
Abhishek JaguessarAbhishek Jaguessar

2. The PlanThe Plan
 Non-verbal or visual clues to lyingNon-verbal or visual clues to lying
 Verbal clues to lyingVerbal clues to lying
 Answer questionsAnswer questions
 Our job is to help you understand the processOur job is to help you understand the process
and issues. Be careful in applying.and issues. Be careful in applying.

3. Lying…Common BeliefsLying…Common Beliefs
 Most people are pretty good at detecting liesMost people are pretty good at detecting lies
 Liars tend to be more nervousLiars tend to be more nervous
 Liars tend to hesitate more in speechLiars tend to hesitate more in speech
 Liars will blushLiars will blush
 Liars more often fail to make eye contactLiars more often fail to make eye contact
 Liars tend to look up and to the left when theyLiars tend to look up and to the left when they
are concocting a lieare concocting a lie
 Relying on your gut or instinct is the best wayRelying on your gut or instinct is the best way

4. PARADOX OF DECEPTION
Most people think
they are good lie detectors
but poor liars
Most people are
poor lie detectors
but highly skilled liars
Perception Reality

5.  “Looking at his face I got the impression that
here was a man who could be relied upon when
he had given his word.”
 British P.M. Neville Chamberlain following a
1938 meeting in Munich with Adolph Hitler,
who swore he would not invade Czechoslovakia.

6.  ““I looked the man in the eye. I found him to beI looked the man in the eye. I found him to be
very straightforward and trustworthy. I was ablevery straightforward and trustworthy. I was able
to get a sense ofto get a sense of his soul.”soul.”
 George Bush commenting on a meeting withGeorge Bush commenting on a meeting with
Vladimir Putin in June 2001.Vladimir Putin in June 2001.

7. The Scientific FactThe Scientific Fact
Lies are present in:
37% of phone conversations
27% of face-to-face conversations
14% of emails ((Hancock, 2005).).
Without training, lies are not easily
detectable.
Behavior can be misleading in credibility
assessment

8. Attempts to detect liesAttempts to detect lies
 Lie detectorLie detector
 based on theory liars are nervousbased on theory liars are nervous
 pulse rate, blood pressure, respiration, and palm sweat.pulse rate, blood pressure, respiration, and palm sweat.
 Detects people who are nervous when they lieDetects people who are nervous when they lie
 Detects people who are nervous that you aren't going toDetects people who are nervous that you aren't going to
believe thembelieve them
 Works about 70 percent of the timeWorks about 70 percent of the time
 MRI brain scanMRI brain scan
 Lie is a cognitive activity, not a memory activityLie is a cognitive activity, not a memory activity

9. Visual CluesVisual Clues
 Numerous studies have been done with subjectNumerous studies have been done with subject
telling known lies and telling the truth. Theirtelling known lies and telling the truth. Their
behavior was recorded and correlated. Thebehavior was recorded and correlated. The
results show some behaviors is correlated withresults show some behaviors is correlated with
lying:lying:
 Pupil dilation – Much more pronounced in liarsPupil dilation – Much more pronounced in liars
 Vocal tension – More pronounced in liarsVocal tension – More pronounced in liars
 Vocal pitch - More pronounced in liarsVocal pitch - More pronounced in liars

10. Visual cluesVisual clues
 Fidgeting – No differenceFidgeting – No difference
 Blinking – No differenceBlinking – No difference
 Cooperative – More pronounced in non-liarsCooperative – More pronounced in non-liars
 Smiling – No differenceSmiling – No difference
 Lip pulls – No differenceLip pulls – No difference
 Pleasantness – Barely more pronounced in NLPleasantness – Barely more pronounced in NL

11. Visual cluesVisual clues
 Are liars less forthcoming:Are liars less forthcoming:
 Longer responses – More pronounced in non-liarsLonger responses – More pronounced in non-liars
 Rich details in story – More pronounced in non-liarsRich details in story – More pronounced in non-liars
 Rate of speech – No differenceRate of speech – No difference
 Time before starting – No differenceTime before starting – No difference

12. Visual cluesVisual clues
 Are stories of liars more compelling?Are stories of liars more compelling?
 Stories have discrepancies/ambivalent – SlightlyStories have discrepancies/ambivalent – Slightly
more pronounced in liarsmore pronounced in liars
 Stories less logical - Slightly more pronounced inStories less logical - Slightly more pronounced in
liarsliars
 Stories impersonal/distant – Definitely moreStories impersonal/distant – Definitely more
pronounced in liarspronounced in liars
 Uncertainty – Slightly more pronounced in liarsUncertainty – Slightly more pronounced in liars
 Word repetition - Slightly more pronounced in liarsWord repetition - Slightly more pronounced in liars

13. Visual CluesVisual Clues
 Foot/leg movements – No differenceFoot/leg movements – No difference
 Posture shifts – No differencePosture shifts – No difference
 Head/Hand movements – No differenceHead/Hand movements – No difference

14. Visual cluesVisual clues
 Admitted lack of memory – More pronouncedAdmitted lack of memory – More pronounced
in non-liarsin non-liars
 Spontaneous corrections – More pronounced inSpontaneous corrections – More pronounced in
non-liarsnon-liars
 Unusual details – No differenceUnusual details – No difference

15. Micro expressionsMicro expressions

16. Micro ExpressionsMicro Expressions
 People demonstrate their emotionsPeople demonstrate their emotions
unconsciously in their actionsunconsciously in their actions
 Sometimes happens for less than a secondSometimes happens for less than a second
 Can read the expression if you are trained toCan read the expression if you are trained to
read them.read them.
 Every expression is built through a combinationEvery expression is built through a combination
of muscles movementsof muscles movements

17. Micro ExpressionsMicro Expressions
Surprise:Surprise:
1.1. Raised brows – high andRaised brows – high and
archingarching
2.2. Skin below brow is stretchedSkin below brow is stretched
3.3. Eyelids open – white showsEyelids open – white shows
above and below irisabove and below iris
4.4. Jaw drops – lips and teethJaw drops – lips and teeth
parted but with no tensionparted but with no tension

18. Micro expressionsMicro expressions
 FearFear

19. Micro ExpressionsMicro Expressions
Disgust

20. Micro ExpressionsMicro Expressions

21. Examples in useExamples in use

23. Verbal cluesVerbal clues
 What you see below is copied from a report form but itWhat you see below is copied from a report form but it
is exactly what was written by a man who was reportingis exactly what was written by a man who was reporting
his car stolen. However, the nature of his handwritinghis car stolen. However, the nature of his handwriting
is not an issue so it is reproduced in typescript. Theis not an issue so it is reproduced in typescript. The
report form had on it his name and address, his carreport form had on it his name and address, his car
number and other similar facts that had been written innumber and other similar facts that had been written in
the spaces provided for them. In what you read below,the spaces provided for them. In what you read below,
is there anything that would help you to decide whetheris there anything that would help you to decide whether
it is truthful or deceptive? If so, what?it is truthful or deceptive? If so, what?

24. Fri 14 octFri 14 oct
PARKED IN HUDSON’S PARKINGPARKED IN HUDSON’S PARKING
LOTLOT
Section CSection C
Went Shopping for 1/2 HR.Went Shopping for 1/2 HR.
Came out It was goneCame out It was gone
Description of CarDescription of Car
1975 Bricklin, White, Gull wing1975 Bricklin, White, Gull wing
DoorsDoors
Goodyear Eagle ST. tiresGoodyear Eagle ST. tires

25. 11. “On 22nd February 2003, a bundle of 10’s totalling $5,000 was found in locker. “On 22nd February 2003, a bundle of 10’s totalling $5,000 was found in locker
2. 3, where my cash drawer is kept. The date stamped on the straps of the2. 3, where my cash drawer is kept. The date stamped on the straps of the
3. bundle is that of 31st January 2003, on this day, as on most Tuesday I am3. bundle is that of 31st January 2003, on this day, as on most Tuesday I am
4. responsible for balancing the vault. At approximately 2.00 pm, I balanced4. responsible for balancing the vault. At approximately 2.00 pm, I balanced
5. the vault. The currency is then placed in vault locker 5. If 5 is locked then5. the vault. The currency is then placed in vault locker 5. If 5 is locked then
6. the currency is placed in any open locker and locked, if I am doing the vault6. the currency is placed in any open locker and locked, if I am doing the vault
7. then I will put it in locker 3. I did not have a chance to find someone to tell7. then I will put it in locker 3. I did not have a chance to find someone to tell
8. them before they went to the vault. If I placed the bundle in locker 3 then it8. them before they went to the vault. If I placed the bundle in locker 3 then it
9. was there from 31st January until it was discovered on 22nd February. I had9. was there from 31st January until it was discovered on 22nd February. I had
10. no knowledge of the missing money. I’ve been with this bank for more10. no knowledge of the missing money. I’ve been with this bank for more
11. than two years and if in that time you are unaware of my trustworthiness11. than two years and if in that time you are unaware of my trustworthiness
12. then I suggest we need to come to some sort of agreement so this does not12. then I suggest we need to come to some sort of agreement so this does not
13. happen again.”13. happen again.”