期刊
PERSONALITY AND INDIVIDUAL DIFFERENCES
卷 32, 期 5, 页码 809-816出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0191-8869(01)00085-X
关键词
subjective alertness; mood; time of day; morning- and evening-types
Several self-evaluation instruments have been developed for identifying the individual circadian typology. The use of these instruments suggests the idea that the morningness-eveningness dimension could be considered as a continuum between two extremes. Aim of the present work is to support such an idea by meat-is of external criteria. A sample of 222 subjects was administered the Morningness-Eveningness Questionnaire (MEQ). Six typologies were considered definitely morning, moderately morning, intermediate-morning. intermediate-evening, moderately evening, and definitely evening. Body temperature. and subjective alertness readings were collected at 08:00, 14:00, and 23:00 in counterbalanced order. As regards subjective alertness a significant interaction (ANOVA) between circadian typology and time of day was found. At 08:00 the recorded values of subjective alertness gradually increased starting from the definitely evening extreme typology to the definitely morning one, vice-versa at 23:00. These results seem to support the idea that the morningness-eveningness dimension could be considered as a continuum between two extremes: morning-evening preference. Nevertheless, this is especially true for subjective alertness. Suggestions about how to Use the MEQ are put forward. (C) 2002 Elsevier Science Ltd. All rights reserved.
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