The activity described here was designed to center on the observation of circadian rhythms in plants through the example of growing beans. The aim was to develop students' skills of systematic observation of various variables in the long-term. Our study took place at a Science and Arts Center with 17 gifted students in the third and fourth grades…

In the face of the COVID-19 pandemic experienced around the world, new student lifestyles have had an impact on their daily behavior. The purpose of this study was to examine post-traumatic stress associated with the initial COVID-19 crisis in students (N = 280) with a mean age of 13 ± 1.70 and to determine the relationship between their reported…

Although the environmental light/dark cycle is the main zeitgeber for the human species, the social cues seem to be important in the synchronization of circadian rhythms. In Brazil, the existence of two school schedules--one with only morning classes (MG) and other with only afternoon classes (AG)--allows the investigation of the effect of school…

Seasonal changes in daylight are substantial in subarctic areas and are known to affect circadian sleep rhythms. We examined whether seasonality in cognitive performance also exists and to what extent seasonality in sleep moderates this relationship. In the city of Tromsø (Norway) at 69°N, 182 adolescents (36% male; mean age 16.8 years)…

One of the earliest challenges for infants and their parents is developing a diurnal sleep--wake cycle. Although the human biological rhythm is circadian by nature, its development varies across cultures, based in part on "zeitgebers" (German: literally "time-givers") or environmental cues. This study uses the developmental…

The circadian rhythm functioning and sleep patterns of 10 adults with Asperger syndrome were investigated using actigraphy. When compared with data from neurotypical adults, both statistical and clinically significant differences were found between the two groups, with the adults with Asperger syndrome showing marked abnormalities in both the…

Circadian rhythms, in particular the sleep-wake cycle, modulate most, if not all, aspects of physiology and behavior. Their impact on education has recently begun to be understood, including a clear positive relationship between sleep and learning. In fact, sleep deprivation, common to adolescents throughout the world, has a deep effect on…

Human behavior is not constant over the hours of the day, and there are considerable individual differences. Some people raise early and go to bed early and have their peek performance early in the day ("larks") while others tend to go to bed late and get up late and have their best performance later in the day ("owls"). In…

Physiology is an integrative science that requires an understanding of the organism as a whole to acquire a deep comprehension of its functions and avoid misconceptions that may impair further learning. Thus it is necessary to develop resources that promote the integrative vision that Physiology requires. Chronobiology is a challenging discipline…

This contribution describes a new laboratory experience that improves medical students' learning of chronobiology by introducing them to basic chronobiology concepts as well as to methods and statistical analysis tools specific for circadian rhythms. We designed an autorhythmometry laboratory session where students simultaneously played the role…

A seminar was held in Brussels for the purpose of disseminating results of the Council of Europe's Council for Cultural Cooperation's (CDCC) Project 8, Innovation in Primary Education (IPE), and information about IPE-related educational innovation in French-speaking Belgium. Participants were 92 educators. A review of aims of the CDCC and aspects…

Analyzed circadian variations in suicide attempts in Tokyo from 1978 to 1985 from records of Ambulance Service of Tokyo. Findings showed significant circadian variation in suicide attempts which seemed to be associated with endogenous rhythms, such as mood, and daily variation in social activities. Established peak time for suicide attempts as…