“…It is generally agreed that providing corrective feedback to a person who has made an error is an effective means of rectifying those errors (Anderson, Kulhavy, Andre, 1971; Butler, Karpicke, & Roediger, 2008; Butler & Roediger, 2008; Kang, McDermott, & Roediger, 2007; Kulhavy, 1977; Lhyle & Kulhavy, 1987; Metcalfe & Kornell, 2007; Metcalfe, Kornell, & Son, 2007; Metcalfe, Kornell, & Finn, 2009; Pashler, Cepeda, Wixted & Roher, 2005). How beneficial the feedback will be, however, appears to be modulated by people’s confidence in their errors.…”