“…Eye-tracking has become a frequently used, nonverbal measure of young children's performances (e.g., Paulus et al, 2011; De Bordes et al, 2012; Elsner et al, 2012a,b; Fawcett and Liszkowski, 2012). In particular, it has been shown to be a suitable method to investigate young children's learning performances (e.g., Johnson et al, 2003; McMurray and Aslin, 2004; Roebers et al, 2010; Paulus and Fikkert, 2012) and, in school-aged children, also metamemory skills (Roderer and Roebers, 2010). Roderer and Roebers (2010) examined 7–9-year-old children's explicit confidence judgments (CJs) in a memory task.…”