Man spends about eight hours a night sleeping, and is inclined to feel grumpy, and act inefficient, if he gets less than that. Last week two British researchers reported some results of a study that should calm the world's insomniacs. Their reassuring finding: under certain conditions, loss of sleep actually increases efficiency on the job.
At the Applied Psychology Research Unit in Cambridge, Drs. Robert T. Wilkinson and Donald Broadbent got Royal Navy volunteers to go 60 hours without sleep. The test subjects worked for 4½-hour stretches, then got 1½ hours off for a meal and restbut no...
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