Age and gender differences in morningness-eveningness during adolescence |
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Authors: | Randler Christoph |
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Institution: | University of Education Heidelberg, Department of Natural Sciences, Heidelberg, Germany. randler@ph-heidelberg.de |
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Abstract: | Morningness-eveningness was assessed in a large sample of adolescents and young adults. Morningness decreased from 12 to 15 years, and then remained on a stable level until about 20 years, when a turn back to morningness occurred. Boys and men were on average more evening-oriented than were girls and women. In detail, significant differences existed at the ages of 16, 18, and 19 years. A quadratic function explained more variance than a linear regression. Composite Scale of Morningness scores are related to puberty scores in boys and girls, and when combining data (i.e., higher pubertal development was related to eveningness). |
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