Body language of police interviewees may be misleading
Story supplied by LU Press Office
Second language speakers interviewed by police risk having their behaviour mistaken for deception according to research. The challenge of speaking in a foreign language is similar to the stress felt by people who are telling a lie.
Both groups change their physical behaviour as a result, which may cause a second language speaker to act in a way associated with lying.
This was the finding of a recent study by PhD candidate Sophie Van Der Zee and Professor Paul Taylor from Security Lancaster at Lancaster University.
The paper "Nonverbal mimicry increases in second language interviews" won best student paper prize at the recent European Association of Psychology and Law conference.
Sophie Van Der Zee summarised: "Police forces in the United States and Europe are reporting significant growth in the cultural diversity of interviewees and the range of language skills encountered in the interview room. When examining a suspect's behaviour for cues that reveal deceit, a distorted image can arise when the suspect is speaking in their second language because both cognitive load and anxiety can cause behavioural changes that match those used to predict deceit."
Fifty six people took part in the study in which they wore full body motion capture suits to record their position 120 times a second to capture the extent of their behavioural mimicry.
The participants were asked either to lie or tell the truth about their memories of several tasks, either in their first language, Dutch, or in their second language, English.
Previous research by the authors had shown that first language interviewees increase their mimicry of the interviewer when lying. These results confirmed the previous finding but also suggest that other factors, such as second language use, may play a critical factor in how a person appears during interview. This, in turn, may impact on interviewers' perceptions of their guilt.
Security Lancaster brings together Lancaster University's research in cyber security, security futures, violence and society, transport and infrastructure security, and investigative expertise.
Fri 04 October 2013
A ground-breaking Masters programme from Lancaster University is giving students the opportunity to work on high-impact business projects that develop collaboration between UK and Chinese SMEs.
Wed 29 April 2015
The new Engineering Building has won recognition in the Royal Institute of British Architects (RIBA) Regional Awards.
Tue 28 April 2015
The Faculty has upheld its strong reputation as a destination for students wishing to pursue studies in science and technology in the latest league tables published by The Complete University Guide for 2016.
Tue 28 April 2015
The Engineering Department has been working with a group of “Aspiring Engineers” at Ripley St Thomas Church of England Academy. Alongside listening to talks on a variety of topics from representatives from the Engineering Department and industry, the students were asked to think like engineers and devise a solution to a problem the world might face in 2050. Ideas ranged from trains to kettles of the future. The students presented their solutions as conference style posters to...
Fri 24 April 2015