Varia Vol. 120, 2020/2 - 132 pagesContentsPages 99 à 101Introduction to the special issue. The development of working memoryPar Valérie CamosTheoretical notesPages 103 à 134The evolution of working memoryPar corresponding author Frederick L. Coolidge, Thomas WynnPages 135 à 156Why and how to study working memory developmentPar Nelson CowanResearch articlesPages 157 à 174The rate of forgetting over time in working memory during early childhoodPar Raphaëlle Bertrand, Izabela Stan-Zahno, corresponding author Valérie CamosPages 175 à 202Children’s working memory develops at similar rates for sequences differing in compressibilityPar corresponding author Fabien Mathy, Michaël Fartoukh, Ori Friedman, Nicolas Gauvrit, Alessandro GuidaPages 203 à 229Core mechanisms underlying the long-term stability of working memory traces still work in agingPar Gabriel Jarjat, Gaën Plancher, corresponding author Sophie Portrat