Stirling University study tracks lies using eye movement
Written by centralfmnews on August 8, 2019
Researchers at Stirling University have developed a new test, which can expose when people are lying about remembering faces.
The team showed people a series of familiar faces – they found those who were lying couldn’t hide their reaction.
They used a process which tracks eye movements.
A similar process is used in Japan – to expose guilty knowledge about crimes.
Dr Ailsa Millen led the research:
“Police officers routinely use photographs of faces to establish key identities in crimes. Some witnesses are honest – but many are hostile and intentionally conceal knowledge of known identities. For example, criminal networks – such as terrorist groups – might deny knowledge to protect one another, or a victim might be too afraid to identify their attacker.
“Our study tracked people’s eye movements when they denied knowledge of someone they knew. Instead of looking for signs of lying directly, we looked for markers of recognition in patterns of eyefixations – such as how individuals looked at a photograph of someone they recognised; compared to someone they did not.
“The main aim was to determine if liars could conceal recognition by following instructions to look at every familiar and unfamiliar face with the same sequence of eye fixations – in short, they could not.”