Tracey L. Sletten

TL;DR: Although healthcare workers perceive themselves to be less alert on the first night shift compared to subsequent night shifts, objective performance is equally impaired on subsequent nights.

TL;DR: Older age, morning-type, circadian flexibility, being married or having children, increased caffeine intake, higher scores on neuroticism and lower on hardiness were related to a higher risk of sleep-related impairment in response to shift work, whereas physical activity was a protective factor.

TL;DR: Results add to previous findings demonstrating reduced responsiveness to the acute effects of blue light in older people (melatonin suppression, alertness) and under the study paradigm, the phase-advancing response to light does not appear to be significantly impaired with age.

TL;DR: Strong associations were found between objective drowsiness and increased odds of driving events during commutes following night shifts and under real‐world driving conditions, shift‐working nurses experience high levels of drowsness as indicated by ocular measures, which are associated with impaired driving performance following night shift work.

TL;DR: The relationship between the DLMO and sleep times in 16 young healthy individuals who slept at their habitual times for a week was examined and the possibility of predicting young healthy normally entrained people's DLMOs from their sleep times is discussed.