This study assessed the relationship between self-rated right–left confusability and performance on the Money Road-Map Test (MRMT). Eighty-six undergraduate university students (44 women and 42 men) rated right–left subjective confusability using a questionnaire, and then completed the MRMT. Low- and high-confusability groups were determined using self-rated confusability scores. The high-confusability participants were less accurate and slower than the low-confusability participants in completing the MRMT. Self-confusability ratings significantly correlated with both accuracy scores and completion times on the MRMT. Although, women showed a significantly greater inclination than men to judge themselves as being more prone to confusion in right–left discrimination, the male advantage was not observed in terms of accuracy of response: there was a significant difference only in the completion time on the MRMT.
