Welcome to the Nexus of Ethics, Psychology, Morality, Philosophy and Health Care

Welcome to the nexus of ethics, psychology, morality, technology, health care, and philosophy
Showing posts with label Lie Detection. Show all posts
Showing posts with label Lie Detection. Show all posts

Monday, November 3, 2014

The Liar's 'Tell': Is Paul Ekman stretching the truth?

By Christopher Shea
The Chronicle
Originally published October 10, 2014

Here is an excerpt:

But Ekman’s lie-detection work has recently taken some hard blows. He has long had academic critics (unmentioned in Blink) who say he has not proved that his behavior-based lie-detection techniques actually work. In November 2013, the Government Accountability Office took things up a notch by recommending that Congress cut the funding of the TSA program. The watchdog agency argued that neither scholarship in general nor specific analyses of SPOT offered any proof that malign intent could be divined by looking at body language or facial cues.

Plenty of academics share this negative view of SPOT. "I really don’t think the current program at TSA is doing anything to protect us," says Charles R. Honts, a professor of psychology at Boise State University, who has consulted with the Department of Defense on behavioral observation.

The entire article is here.

Wednesday, November 30, 2011

People May Lie More Often in Emails, Instant Messages

By Randy Dotinga
MedicineNet.com

New research suggests that people are more likely to lie to strangers when they're communicating via email or instant messages rather than when they are talking face-to-face.

"It's not news that we lie. What's new is that we lie even more online," said study author Mattitiyahu Zimbler, a graduate student and senior researcher at the University of Massachusetts-Amherst.

In the study, the researchers recruited 220 undergraduate students and told them to converse with people of the same gender for 15 minutes, via email, instant message or face-to-face.

The participants introduced themselves to each other and researchers recorded their conversations. Then the researchers asked the participants to look at transcripts and note when they lied.

The researchers found that the participants averaged about 1.5 lies during each 15-minute period.

The lies tended to be minor, often matters of omission. One said, "I am short, credit-wise," instead of acknowledging the failing of classes. Some said they were doing "well" or "good" when that wasn't actually the case; one said "I wanted to be a waitress," when that wasn't true.

The entire article can be found here.

Thursday, September 29, 2011

New emotion detector can see when we're lying

By Hamish Pritchard

A sophisticated new camera system can detect lies just by watching our faces as we talk, experts say.

The computerised system uses a simple video camera, a high-resolution thermal imaging sensor and a suite of algorithms.

Researchers say the system could be a powerful aid to security services.

It successfully discriminates between truth and lies in about two-thirds of cases, said lead researcher Professor Hassan Ugail from Bradford University.

The system, developed by a team from the universities of Bradford and Aberystwyth in conjunction with the UK Border Agency, was unveiled today at the British Science Festival in Bradford.

This new approach builds on years of research into how we all unconsciously, involuntarily reveal our emotions in subtle changes of expression and the flow of blood to our skin.

We give our emotions away in our eye movements, dilated pupils, biting or pressing together our lips, wrinkling our noses, breathing heavily, swallowing, blinking and facial asymmetry. And these are just the visible signs seen by the camera.
 
The entire story can be read here.