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Although there are significant intra-individual differences in self-reported diurnal preference, as measured by validated questionnaires, the relative contribution of exogenous and endogenous factors to self-reported diurnal preference largely remains to be investigated. The present study examined which items from the Horne-Ostberg (HO) questionnaire of(More)
The stress hormone cortisol is the end product of the hypothalamic-pituitary-adrenal (HPA) axis, and the cortisol awakening response (CAR) refers to the rapid rise in cortisol levels observed immediately following awakening. During the CAR period, cortisol levels typically increase by 38%-75%, peaking approximately 30 min after awakening. Evidence suggests(More)
The relationship between diurnal preference, as measured by the Horne-Ostberg questionnaire, and quantifiable personality traits was investigated in 617 participants. A hierarchical multiple regression analysis demonstrated that out of the personality variables, conscientiousness was the single biggest predictor of diurnal preference (beta=0.246), after(More)
Stress, anxiety and depression are raised amongst parents of children with a developmental disorder. However, the processes by which stress leads to depression and anxiety are poorly understood. In a cross-sectional survey, levels of parental stress, depression and anxiety were compared between parents of children with an autistic disorder, children with(More)
BACKGROUND Tart Montmorency cherries have been reported to contain high levels of phytochemicals including melatonin, a molecule critical in regulating the sleep-wake cycle in humans. PURPOSE The aim of our investigation was to ascertain whether ingestion of a tart cherry juice concentrate would increase the urinary melatonin levels in healthy adults and(More)
BACKGROUND AND PURPOSE In work with chronic stroke patients the authors observed that patients frequently appear sleepy and often comment on their poor sleep. Sleep difficulties are frequently reported and indeed clinically recognized in the acute phase post-stroke, but little is known about the sleep and daytime sleepiness of chronic stroke patients with(More)
Art is one of life's great joys, whether it is beautiful, ugly, sublime or shocking. Aesthetic responses to visual art involve sensory, cognitive and visceral processes. Neuroimaging studies have yielded a wealth of information regarding aesthetic appreciation and beauty using visual art as stimuli, but few have considered the effect of expertise on visual(More)
With increasing importance being placed on the role of cognitive biases as a maintaining factor in insomnia, the influence of order effects on interpretative responses should be examined and subsequently accounted for. The aim of the present study was to examine whether asking participants about their sleep experiences, prior to testing for a perceptual(More)
OBJECTIVES Despite daytime factors being implicated as having a key perpetuating role in many of the recent cognitive models of sleep disturbance, standardized, validated measures of sleep-related daytime processing are rare. The aim of the present studies was to develop, refine, and psychometrically evaluate the Sleep Preoccupation Scale (SPS), a(More)