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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.

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Do now
Do Now

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

  • Name 3 ways you can tell when someone is lying



25 minutes
25 MINUTES

  • Finish the packet from yesterday

  • This will involve working quickly & efficientlyfor the ENTIRE time.

  • Timer will be up on the board for you


Polygraphs
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  • Guilty Knowledge Test (GKT): higher reactions when unpublished info is shown to criminals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
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
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
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
Interactions/Reactions

  • Defensive

  • Uncomfortable facing questioner – may turn away

  • May place objects between you


Speech
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
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
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


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