1 / 12

Darwin the detective: Observable facial muscle contractions reveal emotional high-stakes lies

Darwin the detective: Observable facial muscle contractions reveal emotional high-stakes lies. Joe Flynn & Tasha Hanley. assertions made by daRWIN. Emotional expressions are: Inherited Involuntary Emotion-based Adaptive . DARWIN’S INHIBITION HYPOTHESIS.

latoya
Download Presentation

Darwin the detective: Observable facial muscle contractions reveal emotional high-stakes lies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Darwin the detective: Observable facial muscle contractions revealemotional high-stakes lies Joe Flynn & Tasha Hanley

  2. assertions made by daRWIN Emotional expressions are: • Inherited • Involuntary • Emotion-based • Adaptive

  3. DARWIN’S INHIBITION HYPOTHESIS • Some “emotional” facial muscles can’t be inhibited • Attempts to hide these will fail • Previous studies support this

  4. Deception BRINKE ET AL GENERAL HYPOTHESIS • Some facial muscles are involuntary and will signal emotions Do you remember which part of the face the study hypothesized would be more associated with involuntary movement (lies)? • Emotional leaking is likely to happen when the lie is complex and/or associated with strong emotions that have to be concealed • People perform at chance levels when asked to gauge if someone is lying • People lie (on average) 2x a day

  5. STUDY • Looked at videotaped behaviors of 52 people emotionally asking for the return of a missing relative • Half of these (n=26) people were later determined to be guilty of murdering the missing person (based on “overwhelming evidence”) • Looked at muscle activation associated with surprise, sadness, and happiness • Very specific coding system (Facial Action Coding System)

  6. Hypothesis 1 & 2: Genuinely upset people will show more activation of the (1) corrugator superciliiand of the depressor angulioris (2)

  7. Hypothesis 3 &4: Deceivers will show activation of the frontalis- which pulls up the eyebrows (only the medial frontalis is relevant to sadness) and (4) produce more voluntary smiles (zygomatic major)

  8. Results • Genuine pleas lasted longer • “Honest” pleas did activate the corrugator superciliifor longer than the deceivers (H1) • H2 was not statistically significant but seemed to be supported • H3 was supported- liars activated the frontalis more • H4 was also supported- deceivers DO smile more

  9. Note: Relationship totals exceed sample size due to several cases of

  10. Discussion Deceptive people from the study: • Activated specific facial muscles’ associated with lying • Had more gross frontalis activation • Smiled more frequently (thought to mask emotional leaks) • Genuine pleaders from the study: • Often showed activation of innate grief muscles (transcultural & Darwin said these displays facilitated human communication) • Had contractions of the corrugator supercilii for a greater proportion of their pleas (Hypothesis 1) • The depressor angulioriswas engaged more often (Hypothesis 2)

  11. Example • http://www.youtube.com/watch?v=nP5FunbZvJ8

More Related