Morningness, eveningness and the problem of shift work
Shift work is common in many industries, including health care, security, transport and communication. Such sectors need employees to maintain high levels of attention in order to minimise risk. But working shifts is known to lead to cognitive and behavioural problems through disrupted circadian rhythms and sleep patterns. Selvi, Karakaş, Boysan and Selvi find that shift work affects attention deficit, hyperactivity, and impulsivity among nurses, and that an