“Humans are not biologically wired to work at night. Speed and accuracy on the job are only above average between 7:00 a.m. and 7:00 p.m.,” says a report on the effects of fatigue and night work on human cognitive performance.
According to the report, Fatigue Effects and Countermeasures in 24/7 Security Operations, come nightfall, efficiency and productivity decrease and safety risks rise.
In the report, author James C. Miller, Ph.D. explores the effects of fatigue and night work on human cognitive performance and offers countermeasures that may be used to combat these effects. The report may be downloaded once at no charge from www.asisfoundation.org.
Miller's research draws from both experimental and field studies conducted with police and others who work evening and rotating shifts, as well as fatigue research conducted by the Department of Defense.