Morningness-eveningness preference and mood in Japanese junior high school students.
The relationship between morningness-eveningness (M-E) preference and mood in Japanese students aged 12-15 years (690 boys and 649 girls) was investigated. No significant difference in M-E preference was seen between genders. Girls became gloomy more frequently than boys, whereby the girls who experienced melancholy more frequently tended to prefer evening. The correlation between mood and M-E preference, which was demonstrated only by girls, might be linked to a rapid shift to evening preference by girls in the past couple of years.
Takeuchi
Hitomi
H
Laboratory of Environmental Physiology, Faculty of Education, Kochi University, Kochi, Japan. rhythmsyn@hotmail.com
Morisane
Hiromi
H
Iwanaga
Akira
A
Hino
Natsumi
N
Matsuoka
Aya
A
Harada
Tetsuo
T
D000293:Adolescent; D000339:Affect; D002755:Choice Behavior; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D012737:Sex Factors; D012890:Sleep; D013334:Students; D011795:Surveys and Questionnaires; D014851:Wakefulness / Q000502:physiology*