Do Now

Are you good at knowing when someone is lying to you?

Name 3 ways you can tell when someone is lying

FORENSIC PSYCHOLOGY

Polygraphs

25 MINUTES

Finish the packet from yesterday This will involve working quickly & efficiently for the ENTIRE time.

Timer will be up on the board for you

Polygraphs

Intend to catch lies by measuring skin responses BP, HR, sweat, breathing

Controversial & contradictory results Guilty Knowledge Test (GKT): higher

reactions when unpublished info is shown to criminals

Today’s Lesson: How to Detect Lies! Disclaimer: NONE OF THESE are going to

work 100% of the time. These are general trends.

Body Language

Limited hand movements Avoid eye contact Hands touch face, throat, eyes & mouth

Will not likely touch their chest with the palm of their hand

Emotional Gestures

Timing is off between emotions/words Ex: “I love it!” then a smile after

Gestures don’t match verbal statements Ex: Frowning when saying “I love you!”

Expressions limited to mouth movements, not whole face

Interactions/Reactions

Defensive Uncomfortable facing questioner – may

turn away May place objects between you

Speech

Indirect statements Fill in silence A statement with a contraction is more

likely to be truthful: I didn’t do it > I did not do it

Monotonous

Microexpressions

Involuntary facial movements reveal hidden emotions

http://www.youtube.com/watch?feature=player_embedded&v=EXm6YbXxSYk

Anyone could be trained to find them, but some people are naturals

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

Poster: Are You Being Lied To? Working in pairs On your poster, give at least 2 ways to

spot a lie in each category… Body Language Personal Gestures Interactions/Reactions Speech Microexpressions