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The Shift Length Experiment
註釋Presents the results of the first known comprehensive randomized experiment of compressed workweeks in law enforcement. The Police Foundation experiment was designed to test the impacts of three shift lengths (8-, 10-, and 12-hour) on performance, health, safety, quality of life, sleep, fatigue, alertness, off-duty employment, and overtime among police. In addition to scientifically rigorous research design and methodology, the number of reliable outcome measures employed to analyze the impact of shift length, including departmental data, laboratory simulations and exercises, and previously validated self-report instruments, make this study one of the most comprehensive ever undertaken in this area. The experiment was conducted in the Detroit (MI) and Arlington (TX) Police Departments between January 2007 and June 2009.