MetaFilter posts tagged with liedetection

Hypothesis: I believe when people are lying, they will mostly show it on their eyes and facial expressions.

Deathalicious — Thu, 07 May 2009 23:13:17 -0800

Lie to Me is a fairly new US drama series based on the work of Paul Ekman (previously) who studied facial movements and what they reveal about the emotional state of a person (see Malcolm Gladwell's "The Naked Face", also previously, for more background). No doubt inspired by the show, Gisela, a sixth grader at Mesa Grande Elementary School, decided for her science project to see whether she could tell if a person was lying based on their facial expressions. Here is the result: part 1, part 2 (youtube videos). As part of the experiment, she asked people questions and observed their expressions to see if they were lying. The six questions she asked:

Please describe the American flag.
Please describe an elephant.
Please describe a giraffe.
Please describe what you're wearing right now.
Please describe what type of weather we're having right now.
Please describe what your hands look like.

As part of the experiment, Gisela and her brother Victor are filmed lying and telling the truth. Maybe the best video of all is when her father puts her and her brother through making faces drills.

Conversation with Paul Ekman

hortense — Sat, 10 Dec 2005 01:42:30 -0800

Face to Face: The Science of Reading Faces. Transcript(and video)of a 2004 interview with psychologist Paul Ekman, who is known for his research on facial expression and the development, with associates, of the Facial Action Coding System (FACS). Includes a few facial expression photos. Part of the "Conversations with History" series at the Institute of International Studies, University of California, Berkeley .

Truth or Lie

ewkpates — Wed, 21 Jan 2004 05:24:44 -0800

Devices like these or these may be able to detect lying better than a polygraph and less intrusively. If this technology really really worked and everyone had access to it, say, in their cell phones, would life be any different? How would it change anything, if at all? Sex? Politics? Hip-hop?