Yang Yap

RMIT University | RMIT

Background Current understanding of the associations between adolescents' daily sleep and daytime alertness and fatigue under naturalistically occurring restricted (school) and unrestricted (vacation) sleep opportunities is limited. Methods A convenience sample of adolescents (n = 205; 54.1% females, Mage ± SD = 16.9 ± 0.87 years) completed daily...

Background The healthcare sector is acknowledged as a complex and challenging field. Increasingly, research highlights the importance of healthcare workers’ internal social and emotional skills in managing their well-being and enhancing their capacity to provide patient care and support to colleagues. Emotional Intelligence (EI) has been identified...

Introduction The term “Mediterranean lifestyle” has gained increasing prominence in recent years, yet a specific definition remains elusive. In response, the Mediterranean Lifestyle Medicine Institute Board of Directors convened a multidisciplinary panel comprising international experts and leaders in lifestyle medicine. Their goal was to review ex...

Study Objectives Current evidence suggests that cortisol levels are bi-directionally associated with sleep. However, the daily, naturalistic cortisol-sleep associations remain unclear, as current evidence is mostly cross-sectional. This study tested whether pre-sleep cortisol predicts sleep duration and quality, and whether these sleep parameters p...

Study objectives: Sleep and affect are closely related. Whether modifiable cognitive factors moderate this association is unclear. This study examined whether Dysfunctional Beliefs and Attitudes about Sleep moderate the impact of sleep on next-day affect in young people. Methods: Four hundred and sixty-eight young people (205 adolescents, 54.1%...

Background: Emotional reactivity predicts poor health and psychopathology. Despite its theoretical importance, little research has tested whether coping predicts emotional reactivity to stressors. We analyse three studies to test this hypothesis for negative (NA) and positive affect (PA) reactivity to daily stressors. Methods: 422 Participants (...

Habitual sleep duration and efficiency vary widely by age, gender, and racial/ethnic identity. Despite growing research on the importance of night‐to‐night, intraindividual variability (IIV) in sleep, few studies have examined demographic differences in sleep IIV. The present study describes typical sleep IIV overall and by demographics among healt...

Background Recent studies have found bi-directional relations between stress and sleep. However, few studies have examined the daily associations between stress and electroencephalography (EEG) measured sleep. Purpose This study examined the temporal associations between repeated ecological momentary assessments of stress and EEG-estimated sleep....

Background Resilience in children with early family life adversity is linked with successful adulthood psychological outcomes. However, whether resilience influences daily emotional responses to stress remains unclear. This study examined whether resilience capacity in the context of early family risks predicts better daily stress and affect outcom...

This study examined whether resilience capacity moderates the association of daily perceived stress and affect with cortisol diurnal slope among relocated emerging adults. Relocated undergraduates ( N = 98; aged 18–25 years) were recruited from three groups: Resilient, Vulnerable, and Control. The Resilient group required Risky Family Questionnaire...

Nurses experience poor sleep and high stress due to demanding work environments. Night shift work may exacerbate stress-sleep associations. We examined bidirectional associations between daily stress and sleep, and moderation by shift worker status and daily work schedule. 392 nurses (92% female, mean age = 39.54) completed 14 days of sleep diaries...

Study Objectives: Habitual sleep duration and efficiency vary widely by age, gender, and racial/ethnic identity. Despite growing research on the importance of night-to-night, intraindividual variability (IIV) in sleep, few studies have examined demographic differences in sleep IIV. The present study describes typical sleep IIV overall and by demogr...

Introduction Sleep and affect are closely related. Late adolescence and emerging adulthood are associated with unique sleep patterns and risk for mood disturbances. This daily study examined whether dysfunctional beliefs and attitudes about sleep (DBAS), a modifiable cognitive vulnerability factor, moderated daily sleep-affect associations. Method...

Background Daily activities are associated with affective experiences. A 24-h day can be separated into five mutually exclusive activity types: sleep, awake in bed, moderate-to-vigorous physical activity (MVPA), light-intensity physical activity (LIPA), and sedentary behavior (SB). Most research has examined these activities independently and not c...

Nurses experience poor sleep and high stress due to demanding work environments. Night shift work is common among nurses and may exacerbate stress–sleep associations. We examined bidirectional associations between daily stress and sleep, and moderation by recent shift worker status and daily work schedule among nurses. Participants were 392 nurses...

Background Theoretical models argue that coping reduces stress responses, yet no studies have tested whether coping moderates the prospective stress effects on sleep in daily life. Purpose This study tested if coping moderates the stress-sleep association using a daily, intensive longitudinal design across 7-12 days. Methods 326 young adults (Mag...

Objective This study examined whether resilience capacity moderates the impact of daily perceived stress and affect on cortisol diurnal slope among relocated emerging adults. Methods Relocated undergraduates (N=98; aged 18-25 years) were recruited from three groups: Resilient, Vulnerable, and Control. Mixed-effects models were used to test the uniq...

Study Objectives Stress is associated with poor and short sleep, but the temporal order of these variables remains unclear. This study examined the temporal and bi-directional associations between stress and sleep, and explored the moderating role of baseline sleep complaints, using daily, intensive longitudinal designs. Methods Participants were...

Introduction Stress predicts sleep, and theoretically, coping moderates the stress response. Yet, few studies examine whether coping buffers the effects of stress on sleep, especially on a daily basis. This study tested whether coping moderated the stress-sleep relationship. Methods 98 healthy, young adults (62% female) aged 22.5 ± 4.3 years (M±SD...

Introduction Research shows that higher stress predicts poorer sleep. However, the temporal order and whether stress is an outcome of poor sleep remain unclear. This study aimed to test the bidirectional relations and temporal sequence between daily stress and sleep across 12 days, using both actigraphy-assessed and self-reported measures of sleep....