How to spot a liar: People tend to speak more slowly and put less emphasis in the middle of words when they say a parasite, according to a study
- The researchers synthesized voices that said words in different tones and tones
- It was about imitating the “sound signature” that humans make when they lie or are honest
- They then had the volunteers listen to sounds and value the words as honest or dishonest
- They found a slower speech and less emphasis was on signing the dishonesty
When someone tells a lie, it is possible to catch them, as they are more likely to speak slowly and put less emphasis in the middle of words, according to a study.
Researchers at the University of the Sorbonne conducted a series of experiments designed to understand how we decide, based only on voice, if a speaker is honest.
They found that there was a signature in a liar’s voice – a slower speech and less emphasis in the middle of a word – that the brain can automatically detect, even when it’s not actively trying to determine if someone is honest or not. no.
The discovery is expected to be used in the future to develop “light tools” that police could use to determine if a criminal is lying.
Researchers at the University of the Sorbonne conducted a series of experiments designed to understand how we decide, based only on voice, if a speaker is honest. Stock image
The authors of the study say that if you want to be considered honest and confident, speak faster, put more intensity in the middle of a word, and set the tone at the end.
These subtle changes in the way we speak are recorded by the brain “automatically” and occur in several languages, including English, French, and Spanish.
French researchers used voice signal processing to create random word pronunciations, including ascending and descending inclinations.
They then asked various groups of volunteers if the words were pronounced with certainty or honesty.
The success of human cooperation depends on mechanisms that allow individuals to detect unreliability in the people with whom they deal regularly.
Despite being a vital part of human society, researchers do not know exactly what sensory inputs humans use to determine the reliability of another.
To try to solve this, French researchers used a data-based method to decode the prosodic features that drive listeners ’perception of the certainty and honesty of the speakers through the duration and intensity of the tone.
“Here we demonstrate that listeners’ perceptions of the certainty and honesty of other speakers from their speech are based on a common prosody signature, ”they said.
The authors of the study say that if you want to be considered honest and confident, speak faster, put more intensity in the middle of a word, and set the tone at the end. Stock image
Prosody refers to the “melody” of a phrase or word: its tone, rhythm, and intensity.
‘We come across such judgments [certainty and honesty] they trust a common prosodic signature that is perceived independently of the conceptual knowledge and the mother tongue of the individuals ”, wrote the authors of the study.
‘Finally, we show that listeners extract this prosodic signature automatically and that this affects the way they memorize spoken words.
“These findings shed light on a unique auditory adaptation that allows human listeners to quickly detect and react to unreliability during language interactions.”
They found that this “intrinsic” ability to detect “signatures” in a voice could be used to determine if the person is telling the truth or trafficking pigs.
“Prosody therefore conveys information about the true value or certainty of a proposal,” the team wrote.
They are now trying to understand how speakers produce this prosody based on their intentions, rather than just how they perceive different pronunciations.
The findings have been published in the journal Nature Communications.