P. K. Agarwal, J. D. Karpicke, S. H. Kang, H. L. Roediger, and K. B. Mcdermott, Examining the testing effect with open-and closed-book tests, Applied Cognitive Psychology, vol.22, issue.7, pp.861-876, 2008.

K. M. Alraimi, H. Zo, and A. P. Ciganek, Understanding the MOOCs continuance: The role of openness and reputation, Computers & Education, vol.80, pp.28-38, 2015.

J. P. Bean and B. S. Metzner, A Conceptual Model of Nontraditional Undergraduate Student Attrition, Review of Educational Research, vol.55, issue.4, pp.485-540, 1985.

L. Bourdages and C. Delmotte, La persistance aux études universitaires à distance, International Journal of E-Learning & Distance Education, vol.16, issue.2, pp.23-36, 2007.

K. M. Brown, The role of internal and external factors in the discontinuation of off-campus students, Distance Education, vol.17, issue.1, pp.44-71, 1996.

. Cisel, Utilisation des MOOC : éléments de typologie. Manuscrit de thèse non publié, 2016.

J. Daniel, Making Sense of MOOCs: Musings in a Maze of Myth, Paradox and Possibility, Journal of Interactive Media in Education, issue.0, p.3, 2012.

C. D'oliveira, S. Carson, K. James, and J. Lazarus, MIT OpenCourseWare: Unlocking Knowledge, Empowering Minds, Science, vol.329, issue.5991, pp.525-526, 2010.

D. Engle, C. Mankoff, and J. Carbrey, Coursera's introductory human physiology course: Factors that characterize successful completion of a MOOC. The International Review of Research in Open and Distributed Learning, p.16, 2015.

S. Evans and J. G. Myrick, How MOOC instructors view the pedagogy and purposes of massive open online courses, Distance Education, vol.36, issue.3, pp.295-311, 2015.

J. A. Greene, C. A. Oswald, and J. Pomerantz, Predictors of retention and achievement in a massive open online course, American Educational Research Journal, vol.52, issue.5, pp.925-955, 2015.

M. A. Henderikx, K. Kreijns, and M. Kalz, Refining success and dropout in massive open online courses based on the intention-behavior gap, Distance Education, vol.38, issue.3, pp.353-368, 2017.

A. D. Ho, J. Reich, S. O. Nesterko, D. T. Seaton, T. Mullaney et al., HarvardX and MITx: The first year of open online courses, 2012.

R. Du and . Ssrn,

F. M. Hollands and D. Tirthali, Resource requirements and costs of developing and delivering MOOCs. The International Review of Research in Open and Distance Learning, p.15, 2014.

F. M. Hollands and D. Tirthali, MOOCs in Higher Education: Institutional Goals and Paths Forward, 2015.

Y. J. Joo, K. Y. Lim, and J. Kim, Locus of control, self-efficacy, and task value as predictors of learning outcome in an online university context, Computers & Education, vol.62, pp.149-158, 2013.

K. Jordan, Initial trends in enrollment and completion of massive open online courses. The International Review of Research in Open and Distributed Learning, p.15, 2014.

K. Jordan, Massive open online course completion rates revisited: Assessment, length and attrition. The International Review of Research in Open and Distributed Learning, p.16, 2015.

W. C. Kemp, Persistance of Adult Learners in Distance Education, American Journal of Distance Education, vol.16, issue.2, pp.65-81, 2002.

M. Khaneboubi and G. Baron, Analyse de la participation à un cours en ligne ouvert à tous : le cas d'« enseigner et former avec le numérique (eFAN) ». Revue internationale des technologies en pédagogie universitaire, vol.12, pp.1-2, 2015.

R. F. Kizilcec, M. Pérez-sanagustín, and J. J. Maldonado, Self-regulated learning strategies predict learner behavior and goal attainment in Massive Open Online Courses, Computers & Education, vol.104, pp.18-33, 2017.

D. Koller, A. Ng, C. Do, and Z. Chen, Retention and intention in massive open online courses, EDUCAUSE Review, 2013.

D. Koller, An update on assessments, grades, and certification, 2015.

S. Kolowich, The Professors behind the MOOC Hype, 2013.

C. Kulkarni, K. P. Wei, H. Le, D. Chia, K. Papadopoulos et al., Peer and Self Assessment in Massive Online Classes, ACM Trans. Comput.-Hum. Interact, vol.20, issue.6, p.1, 2013.

Y. Lee and J. Choi, A Review of Online Course Dropout Research: Implications for Practice and Future Research, Educational Technology Research and Development, vol.59, issue.5, pp.593-618, 2011.

J. Ma, X. Han, J. Yang, and J. Cheng, Examining the necessary condition for engagement in an online learning environment based on learning analytics approach: The role of the instructor. The Internet and Higher Education, vol.24, pp.26-34, 2015.

A. Margaryan, M. Bianco, and A. Littlejohn, Instructional quality of Massive Open Online Courses (MOOCs), Computers & Education, vol.80, pp.77-83, 2015.

A. W. Radford, J. Robles, S. Cataylo, L. Horn, J. Thornton et al., The employer potential of MOOCs: A mixed-methods study of human resource professionals' thinking on MOOCs. The International Review of Research in Open and Distributed Learning, p.15, 2014.

I. Roediger and J. Karpicke, Test-Enhanced Learning: Taking Memory Tests Improves Long-Term Retention, Psychological Science, vol.17, issue.3, pp.249-255, 2006.

I. Rootman, Voluntary Withdrawal from a Total Adult Socializing Organization: A Model, Sociology of Education, vol.45, issue.3, pp.258-270, 1972.

A. P. Rovai, Search of Higher Persistance Rates in Distance Education Online Programs. Internet and Higher Education, vol.6, pp.1-16, 2003.

W. G. Spady, Dropouts from higher education: An interdisciplinary review and synthesis, vol.Interchange, pp.64-85, 1970.

S. L. Thomas, Ties That Bind: A Social Network Approach to Understanding Student Integration and Persistance, The Journal of Higher Education, vol.71, issue.5, pp.591-615, 2000.

V. Tinto, Dropout from Higher Education: A Theoretical Synthesis of Recent Research, Review of Educational Research, vol.45, issue.1, pp.89-125, 1975.

V. Tinto, Research and Practice of Student Retention: What Next?, Journal of College Student Retention: Research, Theory et Practice, vol.8, issue.1, pp.1-19, 2006.

B. Toven-lindsey, R. A. Rhoads, and J. B. Lozano, Virtually unlimited classrooms: Pedagogical practices in massive open online courses. The Internet and Higher Education, vol.24, pp.1-12, 2015.

F. M. Zaromb and H. L. Roediger, The testing effect in free recall is associated with enhanced organizational processes, Memory & Cognition, vol.38, issue.8, pp.995-1008, 2010.

M. C. Auteur, S. Laboratoire, . Post-doctoral-student, and . Paris-saclay, E-mail: matthieucisel@gmail.com i Précisons dès à présent que l'attrition désigne, dans les paragraphes qui suivent, la part des personnes qui s'inscrivent à un diplôme sans l'obtenir ; la rétention et la persistance représentent l'inverse de l'attrition, à savoir la part de ceux qui obtiennent le diplôme. Dans le contexte d'un MOOC, ces termes ont une signification sensiblement différente, puisque l'on s'intéresse à l'obtention du certificat d'un MOOC, par ailleurs gratuit

, Une API est une interface de programmation applicative ; c'est une interface fournie par la plate-forme d'hébergement à partir de laquelle des informations peuvent être extraites, dans notre cas au format JSON. Le JSON est un format de données textuelles

, iii Précisons que FUN est une plate-forme dont les inscriptions sont gratuites, et sur la période analysée ici, qui s'étend de janvier, 2014.

, iv Nous n'avons néanmoins pas cherché à quantifier l'étendue d'outils autres que ceux de la plate-forme FUN