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  • Guilty Knowledge Test (GKT): higher reactions when unpublished info is shown to criminals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