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Early evidence that the improved Morningness-Eveningness-Stability Scale relates to activity levels and personality
Updated
Abstract
The study involved 97 German students, resulting in a subsample of 42 individuals identified as distinct morning and evening types.
- The Morningness-Eveningness-Stability Scale improved (MESSi) demonstrates strong correlations with the reduced Morningness-Eveningness Questionnaire (rMEQ).
- The 'Morning affect' subscale of MESSi shows a correlation of 0.91 with rMEQ, indicating high convergent validity.
- The 'Eveningness' subscale of MESSi correlates at -0.87 with rMEQ, further supporting its validity.
- Morning affect is negatively associated with the timing of peak alertness and the midpoint of sleep as recorded through actigraphy.
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