Article History
Received: 17 June 2018
Revised: 12 February 2019
Accepted: 15 April 2019
First Online: 24 May 2019
Compliance with Ethical Standards
:
: The experimental procedure and the video content shown to the participants were approved by the Institutional Ethics Committee (IEC) of the National Institute of Technology Karnataka Surathkal, Mangalore, India. The participants were also informed that they had the right to quit the experiment at any time. The video recordings of the subjects were included in the database after their written consent for the use of videos for research purpose. Some subjects also agreed to use their face images in the research articles.