1Professor, Department of Forensic Medicine & Toxicology, Manipal TATA Medical College, Jamshedpur, Manipal Academy of Higher Education, Manipal
2Professor, Department of Ophthalmology, Manipal TATA Medical College, Jamshedpur, Manipal Academy of Higher Education, Manipal
3MBBS student, Shri Sathya Sai Medical College & Research Institute, Manipal Academy of Higher Education, Manipal
*Corresponding Author : Dr. Vijay Kautilya D, Professor, Department of Forensic Medicine & Toxicology, Manipal TATA Medical College, Jamshedpur, Contact : +91 94486-51848, 90949-43338, Email : kautilya.dactroo@gmail.com
Use of verbal and nonverbal clues for deception have been analyzed recently and have shown promising results. This study attempts to cataloged the various verbal and nonverbal cues of deception and analyze their significance.
The study was conducted among 50 subjects of south Indian origin who participated in an experiment which required them to generate true statements and statements of deceit. The recordings of these statements were analyzed for verbal and nonverbal clues and the results tabulated.
In the study it was found that the rate of occurrence of various nonverbal responses increased in a deceit statement. Blink rate and rate of shift of posture showed statistically significant increase in deceit statements. Asymmetric and false smiles were associated with deceit statements.
From the findings of the study, it can be concluded that there is no single response that can detect deceit statement. These cues of deception have to be viewed in comparison to the persons own baseline and cannot be generalized.
Lie detection, Micro expressions, Verbal cues, Non-verbal cues
