A circadian cycle is an endogenous, healthy process that regulates the of sleep and waking. disturbance could cause a number different health problems. Depending on their morning evening characters, people vary. By administering trans-adapted morningness eveningness questionnaires, purpose present was to assess various personality types. The study included total 300 participants, who were aged ...

Circadian arousal impacts both physiological and intellectual functioning in humans and has been shown to vary significantly over the lifespan. Normative data indicate that children (ages 7 to 12 years) tend to have morning peaks in arousal, but that adolescents shift to eveningness. This evening preference continues through young adulthood and then shifts back to morningness late in life. Whil...

This study explored whether circadian preference is related to students’ attitudes and choices to attend lectures or watch them online, and whether these variables relate to course performance. The subjects were 847 students enrolled in an introductory psychology course who completed an online survey that contained the Morningness – Eveningness Questionnaire and that ascertained their attitudes...

We report on results from an Internet survey of sleeping habits in a Dutch population using the Munich Chronotype Questionnaire (MCTQ), supplemented with the Horne-Ostberg Morningness-Eveningness Questionnaire (MEQ). The MCTQ was completed by 5,055 responders, of which 2,481 also completed the MEQ. MEQ score correlated well with the MCTQ assessment of time of mid-sleep on free days (MSF; r = - ...

Individuals differ in their timing of sleep (bed times, rise times) and in their preference for morning or evening hours. Previous work focused on the relationship between academic achievement and these variables in secondary school students. The main aim of the study is to investigate the relationship between chronotype and academic achievement in 10-year-old children (n = 1125) attending 4th ...

School system in which classes are scheduled 1 week in the morning and the other in the afternoon, and in which students rotate schedule every week, fosters sleep irregularity. In this study, we examined morningness-eveningness of adolescents who were involved in such schedule of school time and explored relationship between their circadian preferences and sleep characteristics. A large sample ...

OBJECTIVE Morningness/eveningness (M/E) is a stable characteristic of individuals. Circadian rhythms are altered in episodes of mood disorder. Mood disorder patients were more evening-type than normal population. In this study, we compared the characteristics of M/E among the 257 patients with bipolar I disorder (BPD1), bipolar II disorder (BPD2) and major depressive disorder, recurrent (MDDR)....