Identifying effective learning environments – Part I Jörg Schorer, Joseph Baker, Heidrun Stoeger & Albert Ziegler (Eds.) CONTENT Pairwise Rasch model item parameter recovery under sparse data conditionsJörg-Henrik Heine & Christian TarnaiFull article .pdf (Diamond Open Access) Special Topic:Identifying effective learning environments – Part IGuest editors: Jörg Schorer, Joseph...