Do beliefs about font size affect retrospective metamemory judgments in addition to prospective judgments? A registered report

Abstract

Beliefs about how memory works explain several effects on prospective metamemory judgments (e.g., the effect of font size on judgments of learning; JOLs). Less is known about the effect of beliefs on retrospective judgments (i.e., confidence). Here, we tested whether font size also affects confidence ratings and whether beliefs play a similar role in confidence than in JOLs. In two experiments, participants studied words in small and large size, rated JOLs, and completed a font-size test in which they indicated the font size at study and a standard old/new recognition test. The results confirmed that font size affected both JOLs and confidence ratings. The presentation of the counter-belief that memory is better for words in small font size in Experiment 2 and the analyses of confidence for participants who did not believe that large fonts improved memory suggested that the effect of font size on confidence was based on beliefs. This research shows that the debate on theory-based and experience-based factors should not be limited to prospective metamemory judgments but also encompass retrospective judgments.