Diurnal and Seasonal Mood Vary with Work, Sleep, and Daylength Across Diverse Cultures

@article{Golder2011DiurnalAS,
  title={Diurnal and Seasonal Mood Vary with Work, Sleep, and Daylength Across Diverse Cultures},
  author={Scott A. Golder and Michael W. Macy},
  journal={Science},
  year={2011},
  volume={333},
  pages={1878 - 1881}
}
Across the world the collective mood heightens at breakfast time and during the weekend. We identified individual-level diurnal and seasonal mood rhythms in cultures across the globe, using data from millions of public Twitter messages. We found that individuals awaken in a good mood that deteriorates as the day progresses—which is consistent with the effects of sleep and circadian rhythm—and that seasonal change in baseline positive affect varies with change in daylength. People are happier on… 
Circadian mood variations in Twitter content
TLDR
Since circadian rhythm and sleep disorders have been reported across the whole spectrum of mood disorders, this study suggests that analysis of social media could provide a valuable resource to the understanding of mental disorder.
Circadian Fluctuation of Reward Response and Synchronization to Reward
TLDR
The neurobiology of circadian rhythms, diurnal mood variation, fluctuating properties of reward over the 24 h cycle and, finally, the ability to synchronize circadian rhythms to reward regardless of the imposed light/dark cycle are addressed.
Circadian dimension and severity of depression
Analysis of circadian rhythms from online communities of individuals with affective disorders
TLDR
The findings show that individuals with affective disorders show a significant distinction in their circadian rhythms across the online activity, shedding light on the potential of using social media for identifying diurnal individual variation in affective state, providing key indicators and risk factors for noninvasive wellbeing monitoring and prediction.
Antepartum Depression Severity is Increased During Seasonally Longer Nights: Relationship to Melatonin and Cortisol Timing and Quantity
TLDR
Women who experience antepartum depression may be more susceptible than their nondepressed counterparts to phase alterations in melatonin and cortisol timing during seasonally longer nights, and interventions that phase delayMelatonin and/or cortisol timing—for example, increased exposure to bright evening light—might serve as an effective intervention for antepsartum depressions whose severity is increased during seasonal longer nights.
The effects of seasons and weather on sleep patterns measured through longitudinal multimodal sensing
TLDR
The strongest seasonal effects for wake time and sleep duration are observed, especially during the spring season: wake times are earlier, andSleep duration decreases (compared to the reference season winter).
Time-of-Day Variation in Subjective Mood Among Lumosity Users
Human mood varies according to both endogenous and situational factors. Analyzing patterns of online media engagement can provide additional insights into a third dimension of mood potentially
The Mind After Midnight: Nocturnal Wakefulness, Behavioral Dysregulation, and Psychopathology
TLDR
The Mind after Midnight hypothesis is proposed in which attentional biases, negative affect, altered reward processing, and prefrontal disinhibition interact to promote behavioral dysregulation and psychiatric disorders.
...
...

References

SHOWING 1-10 OF 81 REFERENCES
Diurnal variation in the Positive Affects
We examined the circadian rhythm of two basic dimensions of mood—Positive Affect (PA) and Negative Affect (NA). Subjects were 196 college students in two studies who completed a mood rating form
Complex interaction of the sleep-wake cycle and circadian phase modulates mood in healthy subjects.
TLDR
Results indicate that, in healthy young subjects, subjective mood is influenced by a complex and nonadditive interaction of circadian phase and duration of prior wakefulness, and the nature of this interaction is such that moderate changes in the timing of the sleep-wake cycle may have profound effects on subsequent mood.
A population approach to the study of emotion: diurnal rhythms of a working day examined with the Day Reconstruction Method.
TLDR
The Day Reconstruction Method (DRM), a new survey instrument that reconstructs the emotions of a day, is examined as a method for enabling large-scale investigations of rhythms.
A LONGITUDINAL INVESTIGATION OF SEASONAL VARIATION IN MOOD
TLDR
Winter pattern seasonality was both reliable across measures and significantly more marked among the subgroup of respondents who self-identified winter pattern of mood on the Seasonal Pattern Assessment Questionnaire.
Seasonal affective disorder. A description of the syndrome and preliminary findings with light therapy.
TLDR
Preliminary studies in 11 patients suggest that extending the photoperiod with bright artificial light has an antidepressant effect and sleep recordings in nine depressed patients confirmed the presence of hypersomnia and showed increased sleep latency and reduced slow-wave (delta) sleep.
A Time-Series Diary Study of Mood and Social Interaction
Based on concomitant time-series analyses, the results of this study support distinct social interaction correlates for the mood dimensions of negative affect (NA) and positive affect (PA).
Pathophysiology of seasonal affective disorder: a review.
TLDR
There is substantial evidence for circadian phase shift and serotonergic hypotheses, but conflicting results may indicate that SAD is a biologically heterogeneous condition.
Diary methods: capturing life as it is lived.
TLDR
The types of research questions that diary methods are best equipped to answer are reviewed, the main designs that can be used, current technology for obtaining diary reports, and appropriate data analysis strategies are reviewed.
Salivary cortisol in psychobiological research: an overview.
TLDR
This overview intends to give a comprehensive introduction to the method of salivary cortisol assessment and to briefly discuss its application in different scientific disciplines.
...
...