I am working on the subject “Human-Machine Interactions Adapted to the Personality of Users: Application of Motivation to Physical Activity”. My PhD thesis began in September, 2019 though I've been working at LIMSI-CNRS since January, 2019 as an Engineer. This thesis is funded by a university scholarship supported by Paris-Sud University.

LIMSI stands for "Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur", Computer Science Laboratory for Mechanics and Engineering Sciences. LIMSI is located in Orsay, a city south of Paris, France.


At LIMSI, my office is located in building 508. Take stairs to 2nd floor, turn right, my office is number 219, in the middle of the corridor, on the left.

You can also contact me by e-mail: david.rei[at]

Research Topics

I am working on human-computer interactions (HCI) and especially on a personality-based adaptive model to improve user's motivation to practice physical activity. This is a pluridisciplinary work as it involves very different fields of computing and psychology such as human-computer interactions, adaptive interactions, persuasive technologies and strategies, motivation, as well as two theories from psychology. The Self-Determination Theory identifies three basic needs to be met for the self-motivation and well-being of individuals in their daily activities. The Regulatory Focus Theory presents two action strategies used by individuals, depending on the situation (motivation by gain or loss).

Our aim through this work is to propose a new model of interaction, based on user's personality, actions strategies and physical activity level, that will promote and enhance their motivation to practice regular physical activity.


My PhD work is directed by Jean-Claude Martin, Professor of Computer Science at Paris-South 11 University and Head of the Group “Cognition, Perception and Usability” at LIMSI-CNRS.

It is also co-supervised by Céline Clavel, Assistant Professor of Psychology and Brian Ravenet, Assistant Professor in Human-Computer Interaction.


  • 2019-2020
    • Advanced databases (DUT 2) - 36 h
    • Object oriented programming - basics (DUT 1) - 21 h