“…For the first research question, whether WM tests with and without a cognitively demanding processing task generate distinct outcomes, the results show that WC’s test yielded WM effects on L2 grammar and reading development over the course of one semester (Experiment 2), but DC’s test produced no WM effects over one year (Experiment 1) or one semester (Experiment 2). These findings are in line with L2 studies reporting: (1) WM effects with WM tests with a taxing processing measure (reading: Kormos and Safar, 2008; Leeser, 2007; Linck et al, 2012; Walter, 2004; grammar: Linck and Weiss, 2011, 2015; Santamaria and Sunderman, 2015; Sanz et al, 2014; Serafini and Sanz, 2016), (2) WM effects with WM tests without a taxing processing measure but with low proficiency learners (reading: Abu-Rabia, 2003; Harrington and Sawyer, 1992), (3) no WM effects with WM tests without a taxing processing measure (reading: Chun and Payne, 2004; grammar: Sagarra, 2000; Côté, 2016), and (4) no WM effects with WM tests with a taxing processing measure but with either high proficiency learners (grammar: Frost et al, 2013; Gilabert and Muñoz, 2010; Grey et al, 2015; Serafini and Sanz, 2016) or cognitively simple tasks (grammar: Sanz et al, 2014; Santamaria and Sunderman, 2015).…”