a growing number of studies have
investigated the effectiveness of process-based WM training
(i.e., the repetitive practice of tasks assumed to measure WM
capacity) and their possible positive impacts on other cognitive
abilities, such as reasoning. Aging research has shown
that WM and reasoning decline with age (Craik & Bialystok,
2006; Kramer & Willis, 2002; Park et al., 2002), but processbased
training interventions focusing particularly on healthy
older adults are still scarce. Therefore, the purpose of the
present work was to compare the modifiability of WM performance
in young and old adults and to