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From the Profile of Mood States (POMS) response set, brief, psychometrically sound Negative Affect and Positive Affect scales free of somatic content were constructed. Despite the frequent use of the POMS, its scales are highly intercorrelated, administration time is long, and the presence of items reflecting somatic content potentially confounds the assessment of mood. Comparison of the revised scales' psychometric properties with the properties of the original POMS scoring support the contention that mood can be represented in a less complex format than that currently conceived
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Guadagnoli et al. (1989) studied this question.
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