Canonical-redundancy analyses were computed across the Profile of Mood States (POMS) and the Eight State Questionnaire (8SQ) on a sample of 289 college undergraduates in order to estimate the degree of measurement overlap of the two multidimensional mood-state instruments. Additionally, content similarities and differences across subscales were investigated via a stepwise forward multiple regression approach. Results indicated some measurement commonality across instruments, but also demonstrated that the POMS and 8SQ tap considerable discrete mood-state variance. These findings add to a gradually emerging picture of the interrelationships among emotional states.
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