Mustapha Chekaf is a former PhD student of Fabien Mathy, currently assistant professor in the department of Psychology at University Côte d'Azur, and postdoctoral researcher at the laboratory Bases, Corpus, Langage of the CNRS. Mustapha Chekaf and Fabien Mathy have published together three research articles in peer-reviewed journals in cognitive psychology. His current research explores the capacity of immediate memory in adults and the training of working memory based on physical activities.