“…This prevents participants from keeping the stimulus they had just seen available in iconic memory as reinforcement arrives (Maddox, Ashby, & Bohil, 2003; Maddox, Bohil, & Ing, 2004; Nomura, et al, 2007). Others have not deemed this mask necessary (Ashby & Crossley, 2010; Casale, Roeder, & Ashby, 2012; Smith, Beran, Crossley, Boomer, & Ashby, 2010). …”