Evening chronotype, a correlate of delayed circadian rhythms, is associated with
depression. Altered positive affect (PA) rhythms may mediate the association between …

Excessive daytime sleepiness (EDS) is highly prevalent in the general population; however
little is known about its evolution and predictors. Our objectives were to document its natural …

Sleep is crucial for daytime functioning. In populations with psychiatric conditions, many
people suffer from insomnia symptoms or an insomnia disorder. Emerging evidence …

Chronic insomnia is a risk factor for the development of psychiatric disorders, including
depression, as well as a prodrome of major depressive episodes, a consequence or …

Background The exact nature of the complex relationship between sleep and affect has
remained unclear. This study investigated the temporal order of change in sleep and affect …

Objectives To describe the prevalence of depressive symptoms among Chinese college
students and examine the relationship between sleep and circadian rhythm disruption …

Background Sleep duration and chronotype (ie, morningness–eveningness) are associated
with increased depression and anxiety risk, but differences in individual sleep need and …

Background Insomnia is frequently co‐morbid with depression, with a bidirectional
relationship between these disorders. There is evidence that insomnia‐specific …

Highlights•Most studies measure morningness/eveningness preference rather than
'chronotype'.•Few longitudinal studies exist, and show contrasting results for the direction of …

Sleep duration, sleep continuity, and depression are associated with cardiovascular disease
and metabolic disorders. Despite the well-established relationship between sleep and …