PURPOSE This study aims to validate the applicability of the Metacognitive Beliefs About Performances Questionnaire (MBPQ) for athletes developed by Love et al. (2019a) to Korean adolescents athletes. METHODS The study recruited a total of 311 adolescent athletes registered with the Korea Sports Council. To examine the psychometric properties of the MBPQ and assess model fit, confirmatory factor analysis (CFA) was conducted. Construct validity, internal consistency (Cronbach’s α), and cross-validation across gender and sport type were also evaluated. Criterion validity was verified through correlation analysis with the Metacognitive Processes During Performance Questionnaire (MPPQ). RESULTS The CFA results supported the original five-factor structure of the scale, while overall model fit indices indicated an acceptable level of fit. Although the construct validity and internal consistency only partially met the most stringent criteria, they were deemed acceptable. Furthermore, cross-validation and criterion validity were satisfactorily established. CONCLUSIONS The findings provide empirical support for the validity of the MBPQ in the context of South Korean adolescent athletes. The scale could serve as a useful tool in future studies that explore metacognition as a key psychological construct in sports performance.
