Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New airport security screening method more than 20 times as successful at detecting deception

06.11.2014

Conversations more effective than observing physical behavior, study finds

Airport security agents using a new conversation-based screening method caught mock airline passengers with deceptive cover stories more than 20 times as often as agents who used the traditional method of examining body language for suspicious signs, according to new research published by the American Psychological Association.

In experiments spanning eight months, security agents at eight international airports in Europe detected dishonesty in 66 percent of the deceptive mock passengers using the new screening method, compared to just 3 percent for agents who observed signs thought to be associated with deception, including lack of eye contact, fidgeting and nervousness.

The suspicious-signs screening method is widely used in airports in the United States, United Kingdom and many other countries, even though it has not been proven to be effective in laboratory or real-life settings, said researcher Thomas Ormerod, PhD, head of the School of Psychology at the University of Sussex in England.

"The suspicious-signs method almost completely fails in detecting deception," Ormerod said. "In addition, it costs a lot of money, absorbs a lot of time and gives people a false sense of security."

The new Controlled Cognitive Engagement method (CCE), which is based on previous laboratory studies, had the highest rate of deception detection in the first large-scale study of screening methods conducted in a real-life airport setting.

This could have important implications for thwarting terrorist attacks and catching other criminals, according to the research. The study, which was funded in part by the British government, was published in APA's Journal of Experimental Psychology: General. Ormerod previously worked with the British government to improve security at athletic venues during the 2012 London Olympics.

"The U.K. government gave us a challenge that if we didn't think the current airport screening method worked well, then we should come up with a better one," said Ormerod, who conducted the research with Coral Dando, PhD, a psychology professor at the University of Wolverhampton and former London police officer.

In the CCE method, security agents engage in friendly, informal conversation by asking passengers seemingly unrelated and unpredictable questions about knowledge the passenger should possess. The agent then gauges whether a passenger's responses become more evasive or erratic. "If you're a regular passenger, you're just chatting about the thing you know the best -- yourself," Ormerod said. "It shouldn't feel like an interrogation."

In one example, an agent might ask a passenger the name of his high school principal and the travel time to his destination. It didn't matter if the agents knew the truthful answers to the questions because they were examining verbal cues from the passenger, such as shorter and more evasive responses to straightforward questions, Ormerod said.

In the study, 79 security agents received one week of classroom training in the CCE method, followed by a week of on-the-job training. A control group of 83 agents received no additional training. The lessons covered myths about deception detection and ways to build rapport and gather information from passengers. The bulk of the research occurred at Heathrow Airport outside London, with other screening experiments conducted at two other British airports (Gatwick and Manchester) and airports in Paris, Amsterdam, Frankfurt, Zurich and Milan.

Researchers recruited 204 mock passengers (113 male, 91 female), including college acting students and undercover police detectives. Participants were paid 60 pounds (approximately $97) to participate, along with an additional 60 pounds if they avoided detection by security agents. Each mock passenger had a week to research a different deceptive cover story so he or she would be more convincing when questioned. For example, one recruit was instructed to say he was a telecommunications engineer traveling from England to Chicago for an international amateur fencing competition.

The mock passengers had realistic tickets and joined genuine passengers in security lines, where their screenings were recorded. If a mock passenger was caught, he or she was flagged in a computer system for further questioning at the gate, but all mock passengers turned around after passing through security and left the airport. A control group included 204 genuine passengers (113 male, 91 female) who were asked after their screenings if the recordings could be used in the research.

The CCE technique requires greater focus by security agents, who must think of different questions in each interview, rather than repeating scripted questions about luggage or travel plans in the suspicious-signs method that could be rehearsed by criminals seeking to avoid detection, the study noted. The risk of racial profiling also is reduced with the CCE method because it is applied in the same way to all passengers, unlike the suspicious-signs method, which is based on observation of physical characteristics, Ormerod said.

The average screening time was the same for agents using CCE or the suspicious-signs method, but agents using the CCE method asked fewer questions, with both genuine and mock passengers speaking at greater length to them. But mock passengers gradually spoke less and revealed less information as they were asked more questions that might reveal their deception.

Screening agents trained in the CCE method improved in their ability to catch deceptive mock passengers during the study, increasing from 60 percent during the first month to 72 percent in the sixth month. The agents in the suspicious-signs group, however, performed worse over time, dropping from 6 percent in the first month to zero in the sixth month.

Even though it isn't effective, the suspicious-signs method is frequently used because it is cheap to train, and it "accords with people's folk beliefs about detecting deception," Ormerod said.

"When we can tell when our kids or spouses are lying, we think that those sorts of signs are going to work with everyone, but people lie differently," he said. "You can't assign one particular behavioral sign as a sign of lying. It's how someone's behavior changes during questioning that reveals deception."

The CCE method also could be used by detectives, court officials and other "professional lie catchers," the study noted. Ormerod and Dando are working with British police departments on adapting the screening method to monitor sex offenders on probation or parole. The method also may be used to uncover insurance and tax fraud and to catch job applicants who lie about their qualifications or employment history, he said.

Article: "Finding a Needle in a Haystack: Towards a Psychologically Informed Method for Aviation Security Screening," Thomas C. Ormerod, PhD, University of Sussex, and Coral J. Dando, PhD, University of Wolverhampton; Journal of Experimental Psychology: General; online Nov. 4, 2014.

Full text of the article is available from the APA Public Affairs Office and at http://www.apa.org/pubs/journals/releases/xge-0000030.pdf .

Contact: Thomas C. Ormerod at t.ormerod@sussex.ac.uk or 011 44 7590982741 or Coral J. Dando at CJDando@wlv.ac.uk or 011 44 7860804488.

The American Psychological Association, in Washington, D.C., is the largest scientific and professional organization representing psychology in the United States. APA's membership includes nearly 130,000 researchers, educators, clinicians, consultants and students. Through its divisions in 54 subfields of psychology and affiliations with 60 state, territorial and Canadian provincial associations, APA works to advance the creation, communication and application of psychological knowledge to benefit society and improve people's lives.

http://www.apa.org 

APA Press Office | EurekAlert!

More articles from Studies and Analyses:

nachricht Real-time feedback helps save energy and water
08.02.2017 | Otto-Friedrich-Universität Bamberg

nachricht The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Prediction: More gas-giants will be found orbiting Sun-like stars

22.02.2017 | Physics and Astronomy

Researchers identify cause of hereditary skeletal muscle disorder

22.02.2017 | Health and Medicine

Positrons as a new tool for lithium ion battery research: Holes in the electrode

22.02.2017 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>