1. LTCI, Télécom Paris, Institut Polytechnique de Paris, Palaiseau, France
2. Department of Industrial/Organizational Psychology, University of Hamburg, Hamburg, Germany
3. Institute for Intelligent Systems and Robotics, CNRS UMR7222, Sorbonne University, Paris, France
4. Department of Information Engineering and Computer Science (DISI), University of Trento, Povo (TN), Italy