The aim of present study was to suggest the appropriate way to establish and interpret mediating effect on sport psychology research by reconsidering Barron and Kenny`s criteria (1986) which has been widely used for explaining mediating effect in psychological research. Qualitative review of psychological literature suggesting mediating effect was performed. As a result, we identified several limitations from the Barron and Kenny`s criteria which is two-dimensional classification including fully mediated model and partially mediated model. For example, the criteria cannot explain the issue related to equivalent models which are statistically identical but are logically different, and it disturbs apposite interpretation for the main mediated model. Thus, we discussed the relationship between the equivalent model and the mediated model, and suggested the advisable approach to mediated model for sport psychologists.