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To extend the validation of the Profile of Mood States-Adolescents (POMS-A: J. Sports Sci. 17 (1999) 861–872) from adolescent to adult populations.

A strategy of assessing the invariance of the POMS-A factor structure among disparate samples and of testing relationships with concurrent measures was used.

The POMS-A was administered to 2549 participants from four samples: adult athletes prior to competition (n=621), adult student athletes in a classroom (n=656), adolescent athletes prior to competition (n=676), and adolescent students in a classroom (n=596). A subset of 382 adult student athletes was used to test the criterion validity of the POMS-A.

Confirmatory factor analysis provided support for the factorial validity of a 24-item, six-factor model using both independent and multi-sample analyses. Relationships between POMS-A scores and previously validated measures …