Abbakumov, D.D.AbbakumovDesmet, PietPietDesmetVan den Noortgate, WimWimVan den Noortgate2021-10-272021-10-2720191554-3528https://imec-publications.be/handle/20.500.12860/32393Measuring growth in students' proficiency in MOOCs: two component dynamic extensions for the Rasch modelJournal articlehttps://doi.org/10.3758/s13428-018-1129-1